DR. DAVID MICHAEL HARDIN, MD

PARKER, CO

Research Active
Surgery NPI registered 21+ years 34 publications 1974 – 2025 NPI: 1639174907
InsulinBlood GlucoseRNA, MessengerAlgorithmsMagnetic Resonance ImagingArtificial IntelligenceCaliforniaEnvironmental MonitoringSeawaterMolecular Sequence DataHypoglycemic AgentsWetlandsFecesGiardiaCryptosporidium

Practice Location

9399 CROWN CREST BLVD
PARKER, CO 80138-8506

Phone: (303) 269-2310

What does DAVID HARDIN research?

Dr. Hardin studies a variety of areas that have significant implications for public health and safety. One major focus is on improving the management of Type 2 diabetes through pharmacist-led initiatives, utilizing Continuous Glucose Monitors to enhance patient care. He also investigates sports injuries, particularly among professional soccer players, to better understand their prevalence and impact, which can lead to improved prevention strategies. Additionally, he explores various environmental issues, including the transfer of harmful pathogens and toxins in water systems that can affect both wildlife and human health.

Key findings

  • In a study on Type 2 diabetes management, pharmacist involvement led to an 11.4% reduction in high-risk medications compared to 8.3% without pharmacist support, along with a 3.2% reduction in hospitalizations.
  • In research on Major League Soccer injuries, players experienced an average of 1.1 injuries per year, with 12.3% being hamstring strains and players missing an average of 15.8 days due to injuries.
  • The development of a new method for creating insulin-producing cells from stem cells effectively eliminated tumor-forming cells, improving the safety of potential diabetes treatments.

Frequently asked questions

Does Dr. Hardin study diabetes?
Yes, Dr. Hardin focuses on Type 2 diabetes management, particularly through pharmacist-led care using Continuous Glucose Monitors.
What kind of injuries does Dr. Hardin research?
He researches injuries in professional soccer, identifying common injury types and their frequency among players.
Is Dr. Hardin's work relevant to environmental health?
Yes, he studies the impact of pathogens and toxins in water systems, which is crucial for public health and environmental conservation.
What treatments has Dr. Hardin researched for diabetes?
He has explored the optimization of medications for diabetes patients and the potential of stem cell treatments to produce insulin safely.
Can his research help with injury prevention in athletes?
Yes, his findings on soccer injuries aim to inform better injury prevention strategies for athletes.

Publications in plain English

Evaluating Pharmacotherapy Optimization in Pharmacist-Led Management of Type 2 Diabetes Utilizing Continuous Glucose Monitors.

2025

Journal of primary care & community health

King J, Keedy C, Crosby J, Little S, Thompson A +2 more

Plain English
This study explored how pharmacists can help manage medications for people with Type 2 diabetes by using Continuous Glucose Monitors (CGMs). Among the 317 patients, those who received pharmacist support had a 11.4% rate of stopping or reducing high-risk medications, which was higher than the 8.3% rate seen in those who did not have pharmacist involvement. Additionally, patients in the pharmacist-led group had 3.2% fewer hospitalizations and reduced their daily insulin doses, while those in the usual care group increased theirs. Who this helps: This benefits patients with Type 2 diabetes and their healthcare providers.

PubMed

Incidence of Injury for Professional Soccer Players in the United States: A 6-Year Prospective Study of Major League Soccer.

2022

Orthopaedic journal of sports medicine

Forsythe B, Knapik DM, Crawford MD, Diaz CC, Hardin D +6 more

Plain English
This study looked at injuries among Major League Soccer players in the United States from 2014 to 2019. Researchers recorded nearly 10,000 injuries, finding that each player experienced an average of 1.1 injuries per year, with midfielders getting injured the most. Common injuries included hamstring strains (12.3%) and ankle sprains (8.5%), and players typically missed about 15.8 days due to these injuries. Who this helps: This information benefits players and coaches by highlighting the risks of injuries and emphasizing the need for better injury prevention strategies.

PubMed

A Double Fail-Safe Approach to Prevent Tumorigenesis and Select Pancreatic β Cells from Human Embryonic Stem Cells.

2019

Stem cell reports

Qadir MMF, Álvarez-Cubela S, Belle K, Sapir T, Messaggio F +13 more

Plain English
This study looked at a method to safely make insulin-producing cells from human stem cells for diabetes treatment. Researchers created a modified stem cell line that can kill off unwanted, potentially harmful cells while promoting the growth of the desired insulin-producing cells. They found that this new technique successfully enriched the insulin-producing cells and eliminated dangerous tumor-forming cells both in lab tests and in living organisms. Who this helps: This benefits patients with diabetes by making stem cell treatments safer.

PubMed

The Muscle-Sparing Latissimus Dorsi Flap for Breast Reconstruction: A Retrospective Review of 126 Consecutive Flaps.

2017

Annals of plastic surgery

Cook J, Waughtel J, Brooks C, Hardin D, Hwee YK +1 more

Plain English
This study looked at a specific method called the muscle-sparing latissimus dorsi flap for breast reconstruction in 83 patients over 8 years, with a total of 126 procedures performed. The findings showed that this method had minimal complications and provided good aesthetic results for women undergoing breast reconstruction, whether immediately after surgery or later on. This is important because it offers a reliable option for enhancing appearance while also preserving muscle function. Who this helps: This helps breast cancer patients seeking effective reconstruction options.

PubMed

Daily relative dog abundance, fecal density, and loading rates on intensively and minimally managed dog-friendly beaches in central California.

2017

Marine pollution bulletin

Oates SC, Miller MA, Hardin D, Dominik C, Jessup D +1 more

Plain English
This study looked at the number of dogs and their feces on two different types of dog-friendly beaches in central California to understand pollution levels. The researchers found that both beaches had similar amounts of dog use, but one beach had significantly more dog poop left unrecovered, with an estimated 1.4 tonnes of feces annually on the managed beach compared to 0.2 tonnes on the less managed beach. This is important because it shows how beach management can influence the amount of fecal pollution, which affects water quality and safety for beachgoers. Who this helps: This helps beachgoers, local residents, and environmental managers by highlighting the need for better beach management to reduce pollution.

PubMed

Near-coastal water quality at reference sites following storm events.

2016

Marine pollution bulletin

Schiff K, Brown J, Trump S, Hardin D

Plain English
This study looked at the quality of coastal water in California after storms, focusing on areas that haven't been disturbed by human activity. Researchers found no harmful toxins or man-made chemicals like pesticides in the water, and the natural levels of certain substances varied greatly. These findings are important because they provide a baseline for what healthy coastal water looks like, which can help protect marine areas affected by pollution from nearby development. Who this helps: This helps marine conservationists and environmental regulators.

PubMed

Risk factors associated with enteric septicemia of catfish on Mississippi commercial catfish farms.

2014

Journal of aquatic animal health

Cunningham FL, Jack SW, Hardin D, Wills RW

Plain English
This study focused on a bacterial disease called enteric septicemia of catfish, which is a major issue for catfish farms in Mississippi. The researchers found several key risk factors for this disease, including high ammonia levels, with an odds ratio of 20.48, and nitrite levels, with an odds ratio of 3.49. These findings highlight the importance of monitoring water quality and pond conditions to prevent disease outbreaks, potentially saving farmers from losing large amounts of fish. Who this helps: This helps catfish farmers by providing insights on how to reduce disease risk in their ponds.

PubMed

Estimating environmental conditions affecting protozoal pathogen removal in surface water wetland systems using a multi-scale, model-based approach.

2014

The Science of the total environment

Daniels ME, Hogan J, Smith WA, Oates SC, Miller MA +6 more

Plain English
This study looked at how different environmental factors, like water temperature, cloudiness (turbidity), saltiness (salinity), and vegetation in wetlands affect the removal of harmful protozoa (tiny waterborne parasites) from surface water in the Monterey Bay area of California. The researchers found that having water flow through vegetation significantly increases the removal of these pathogens, with the best results when the vegetation covers about 2% of the area and the water is in contact with it for around 30 minutes. This is important because increasing vegetated areas in wetlands could greatly improve water quality by reducing these dangerous pathogens. Who this helps: This helps patients, especially those at risk of waterborne illnesses, and communities relying on clean water sources.

PubMed

Hydrologic and vegetative removal of Cryptosporidium parvum, Giardia lamblia, and Toxoplasma gondii Surrogate microspheres in coastal wetlands.

2013

Applied and environmental microbiology

Hogan JN, Daniels ME, Watson FG, Oates SC, Miller MA +7 more

Plain English
This study looked at how certain coastal wetlands can help reduce harmful waterborne parasites that can make humans and animals sick, specifically Cryptosporidium parvum, Giardia lamblia, and Toxoplasma gondii. Researchers tested different conditions, like salinity (salt content in water), temperature, and vegetation, and found that higher salinity levels and the presence of plants in the water significantly helped to remove these parasites. Understanding how these factors influence parasite removal is important for improving wetland management and protecting coastal water quality. Who this helps: This helps patients and communities by improving water safety and reducing disease spread from contaminated waters.

PubMed

Strategies for nurse leaders to address aggressive and violent events.

2012

The Journal of nursing administration

Hardin D

Plain English
This study looked at how nurse leaders can effectively handle aggressive and violent situations in healthcare settings, where 48% of non-fatal workplace injuries from violence occur. It found that there's a lack of information and training for nurses on what to do when violence happens and how to calm down aggressive patients or visitors. It's important for nurse leaders to create and support policies that educate nurses on these issues to ensure a safer workplace. Who this helps: This benefits nurses and healthcare workers facing possible violence.

PubMed

Longitudinal Poisson regression to evaluate the epidemiology of Cryptosporidium, Giardia, and fecal indicator bacteria in coastal California wetlands.

2012

Applied and environmental microbiology

Hogan JN, Daniels ME, Watson FG, Conrad PA, Oates SC +7 more

Plain English
This study looked at how contaminated water from coastal California wetlands affects the presence of harmful germs like Cryptosporidium and Giardia, which can cause illness. Researchers found that wetlands near dairy farms had the highest levels of these germs, and after rain, the amounts increased in all wetlands studied. This is important because it shows that while wetlands can help filter these germs, they can also carry them into nearby waterways that people use. Who this helps: This helps patients who may be affected by contaminated water and doctors who treat waterborne illnesses.

PubMed

Epidemiology and potential land-sea transfer of enteric bacteria from terrestrial to marine species in the Monterey Bay Region of California.

2012

Journal of wildlife diseases

Oates SC, Miller MA, Byrne BA, Chouicha N, Hardin D +6 more

Plain English
This study looked at how bacteria found in land animals can transfer to marine species, specifically sea otters, in the Monterey Bay area of California. Researchers tested fecal samples from both land animals and sea otters and found that 28% contained harmful bacteria. Notably, 11% had Campylobacter, and sea otters had similar or higher levels of certain bacteria compared to land animals, indicating they can carry and potentially spread these pathogens. Who this helps: This information is valuable for environmental scientists, wildlife conservationists, and public health officials monitoring the health of marine ecosystems and animal populations.

PubMed

Pond-level risk factors associated with columnaris disease on Mississippi commercial catfish farms.

2012

Journal of aquatic animal health

Cunningham FL, Jack SW, Hardin D, Wills RW

Plain English
This study looked at factors that might increase the risk of columnaris disease, which affects catfish raised on farms in Mississippi. Researchers analyzed data from over 500 ponds and found that deeper ponds and a drop in feed consumption for two weeks before outbreaks were linked to higher rates of the disease. They also discovered that shorter time frames between when catfish were stocked and when the disease appeared, along with higher ammonia levels in the water, contributed to the problem. Being able to monitor these factors can help farmers identify ponds that are at risk for outbreaks, which is important for protecting the health of the fish. Who this helps: This helps catfish farmers improve fish health and reduce losses.

PubMed

Prevalence, environmental loading, and molecular characterization of Cryptosporidium and Giardia isolates from domestic and wild animals along the Central California Coast.

2012

Applied and environmental microbiology

Oates SC, Miller MA, Hardin D, Conrad PA, Melli A +5 more

Plain English
This study looked at the presence of two types of germs, Cryptosporidium and Giardia, in animal feces along the Central California Coast to see how they spread and which animals contribute the most to water pollution. They found that 6% of samples had Cryptosporidium and 15% had Giardia, with infected beef cattle being the biggest contributors to the pollution, but the types of germs they carried were not harmful to humans. In contrast, wild canids (like foxes and coyotes) carried more dangerous types of Giardia that could infect people, making them a bigger public health concern. Who this helps: This research helps public health officials and wildlife managers understand where waterborne diseases may come from.

PubMed

Presence of Bacteroidales as a predictor of pathogens in surface waters of the central California coast.

2010

Applied and environmental microbiology

Schriewer A, Miller WA, Byrne BA, Miller MA, Oates S +8 more

Plain English
This study looked at bacteria called Bacteroidales in water along the central California coast to see if they could help predict harmful germs. Researchers tested over 140 water samples from rivers and estuaries for various bacteria and pathogens, finding that the most common were Vibrio cholerae, Giardia, and Salmonella. The results showed that human fecal contamination was more prevalent than that from animals, and using Bacteroidales markers could be a better way to monitor water quality than standard tests. Who this helps: This benefits water quality managers and public health officials.

PubMed

Evidence for a novel marine harmful algal bloom: cyanotoxin (microcystin) transfer from land to sea otters.

2010

PloS one

Miller MA, Kudela RM, Mekebri A, Crane D, Oates SC +10 more

Plain English
This study looked at how a harmful toxin called microcystin, which comes from freshwater cyanobacteria, is affecting marine life, specifically sea otters. Researchers found that microcystin levels as high as 2,900 ppm were present in rivers flowing into the ocean, leading to the death of 21 sea otters likely due to toxin exposure from contaminated clams, mussels, and oysters. This research highlights a serious health risk for both marine animals and humans, especially for those consuming shellfish from affected areas. Who this helps: This benefits patients, seafood consumers, and conservationists concerned about marine health.

PubMed

Echoes of a profession in crisis.

2009

MLO: medical laboratory observer

Hardin D

PubMed

Chronic cigarette smoking modulates injury and short-term recovery of the medial temporal lobe in alcoholics.

2008

Psychiatry research

Gazdzinski S, Durazzo TC, Yeh PH, Hardin D, Banys P +1 more

Plain English
This study looked at how chronic cigarette smoking affects brain recovery and memory in men recovering from alcohol dependence. Researchers found that after one month of sobriety, substances that indicate brain health improved in non-smokers, but remained low in smokers—13 out of 24 participants were smokers. This is important because it shows that smoking may hinder brain recovery and memory function in people with alcohol use issues. Who this helps: This research benefits alcoholics trying to quit, especially those who smoke.

PubMed

Supernova shock breakout from a red supergiant.

2008

Science (New York, N.Y.)

Schawinski K, Justham S, Wolf C, Podsiadlowski P, Sullivan M +19 more

Plain English
This study looked at a massive star that exploded in a supernova and found evidence of an early burst of light from the explosion before it became visible to us. Observations showed this early light from the supernova called SNLS-04D2dc and confirmed that the star was a red supergiant. Understanding this process helps scientists learn more about how these massive stars die and the events leading up to the explosion. Who this helps: This helps astronomers and astrophysicists study the life cycles of massive stars and the nature of supernovae.

PubMed

The slow recovery of San Francisco Bay from the legacy of organochlorine pesticides.

2007

Environmental research

Connor MS, Davis JA, Leatherbarrow J, Greenfield BK, Gunther A +4 more

Plain English
This study looked at the lasting impact of harmful pesticides, like DDT, in San Francisco Bay, which were widely used decades ago but still affect the water quality today. Researchers found that if no new pesticides enter the Bay, it could take 10 to 30 years for the levels in the water and sediment to reach safer limits. However, if pesticide levels continue to rise, recovery could take much longer. Who this helps: This information benefits environmental agencies, fishery managers, and public health officials concerned about the safety of fish caught in the Bay.

PubMed

A comprehensive evaluation of multicategory classification methods for microarray gene expression cancer diagnosis.

2005

Bioinformatics (Oxford, England)

Statnikov A, Aliferis CF, Tsamardinos I, Hardin D, Levy S

Plain English
This study looked at how well different computer methods can diagnose cancer using gene expression data, analyzing 11 datasets with 74 cancer categories and 41 cancer types. The researchers found that a method called multicategory support vector machines (MC-SVMs) is the most accurate for cancer diagnosis, often performing much better than other popular methods. This is important because it helps improve how accurately cancers can be diagnosed, which can lead to better patient care. Who this helps: This benefits cancer patients and doctors involved in diagnostics.

PubMed

Text categorization models for high-quality article retrieval in internal medicine.

2005

Journal of the American Medical Informatics Association : JAMIA

Aphinyanaphongs Y, Tsamardinos I, Statnikov A, Hardin D, Aliferis CF

Plain English
This study looked at how well machine learning can find high-quality medical articles in internal medicine compared to older search methods. Researchers found that new models, particularly the polynomial support vector machines, performed better at identifying useful articles. For instance, these models had improved sensitivity and precision, meaning they were more effective at finding relevant studies than previous methods from 1994. Who this helps: This helps doctors and medical researchers access better information for treating patients.

PubMed

Differentially expressed transcripts from phenotypically identified olfactory sensory neurons.

2005

The Journal of comparative neurology

Yu TT, McIntyre JC, Bose SC, Hardin D, Owen MC +1 more

Plain English
This study looked at specific types of cells in the noses of mice, called olfactory sensory neurons (OSNs), to identify different genes that are active in these cells compared to their neighbors. Researchers found 54 genes that are expressed differently, with many related to the challenges that OSNs face. Notably, about 70% of OSNs show a particular pattern in a gene called S100A5, which may be connected to how they detect smells, while other identified genes suggest that neighboring cells play a role in breaking down harmful substances. Who this helps: This research benefits scientists and researchers working to understand how the sense of smell operates and how it might be affected in different conditions.

PubMed

Inducible transcript expressed by reactive epithelial cells at sites of olfactory sensory neuron proliferation.

2004

Journal of neurobiology

Stoss TD, Nickell MD, Hardin D, Derby CD, McClintock TS

Plain English
This study looked at how certain cells in the spiny lobster’s smell organ produce new cells to replace old ones. Researchers found a specific molecule called PET-15 in the area where new cells grow, which increases when the organ is damaged to help generate new smell receptors. In terms of numbers, PET-15 was present in all the growth zone cells and showed higher levels when the organ was hurt, indicating its role in healing and cell growth. Who this helps: This research benefits scientists studying cell regeneration and may eventually inform treatments for sensory organ damage in other animals, including humans.

PubMed

Use of somatic cell counts and California mastitis test results from individual quarter milk samples to detect subclinical intramammary infection in dairy cattle from a herd with a high bulk tank somatic cell count.

2004

Journal of the American Veterinary Medical Association

Middleton JR, Hardin D, Steevens B, Randle R, Tyler JW

Plain English
This study looked at whether tests on milk samples could reliably detect infections in dairy cattle. Researchers collected samples from 278 cows and found that a high percentage—about 59%—showed no bacterial growth, indicating they were healthy. However, the tests used (California mastitis test and somatic cell count) were not sensitive enough to consistently identify infected cows, with scores indicating infection only about 50-76% of the time. Who this helps: This information is beneficial for dairy farmers and veterinarians working with cattle.

PubMed

Olfactory-enriched transcripts are cell-specific markers in the lobster olfactory organ.

2003

The Journal of comparative neurology

Hollins B, Hardin D, Gimelbrant AA, McClintock TS

Plain English
This study looked at specific genes that are mainly found in the lobster's sense of smell. Researchers identified 20 gene fragments that are more active in the lobster's olfactory organ compared to other body parts, and confirmed that six of these genes have roles related to different types of cells in that organ. This is important because understanding these genes can help us learn more about how lobsters and similar animals process smells. Who this helps: This research benefits biologists and neuroscientists studying sensory systems in marine animals.

PubMed

Comparison of methods for measuring longitudinal brain change in cognitive impairment and dementia.

2003

Neurobiology of aging

Cardenas VA, Du AT, Hardin D, Ezekiel F, Weber P +4 more

Plain English
This research compared different ways to track changes in brain size over time in older adults with varying levels of cognitive function—those with normal cognition, mild cognitive impairment, and dementia. The findings showed that individuals with dementia experienced faster brain shrinkage than those with mild cognitive impairment or normal cognition, especially in key areas like the hippocampus and the entorhinal cortex. Specifically, the rate of brain shrinkage in demented individuals was significantly greater, with hippocampal volume decreasing at an annual rate of 0.0001 (for comparison). Who this helps: This research helps doctors understand how to monitor brain changes in older patients, particularly those at risk for dementia.

PubMed

Comparison of automated and manual MRI volumetry of hippocampus in normal aging and dementia.

2002

Journal of magnetic resonance imaging : JMRI

Hsu YY, Schuff N, Du AT, Mark K, Zhu X +2 more

Plain English
This study looked at how well two methods—automatic and manual—measure the size of the hippocampus in the brains of older people, including those with normal aging, cognitive impairment, and Alzheimer's disease. Researchers found that both methods produced similar results in measuring brain volume, with automatic measurements being faster and highly reliable (94% accuracy) compared to nearly perfect results (99% accuracy) for manual measurements. This finding is important because using automated methods can make it easier to track changes in the brain related to aging and dementia in a quicker and less biased way. Who this helps: This helps researchers and healthcare providers monitor brain health in older adults.

PubMed

Machine learning models for lung cancer classification using array comparative genomic hybridization.

2002

Proceedings. AMIA Symposium

Aliferis CF, Hardin D, Massion PP

Plain English
This study explored how machine learning can help classify non-small cell lung cancers by analyzing changes in the genes of tumor samples from 37 patients. Researchers found that their best model achieved an accuracy of 89.2% in identifying different cancer types, indicating that genetic changes can effectively distinguish between histological subtypes. This is important because correctly classifying the type of lung cancer can lead to better treatment plans for patients. Who this helps: Patients with lung cancer and their doctors.

PubMed

Diagnosis, screening and management of cystic fibrosis related diabetes mellitus: a consensus conference report.

1999

Diabetes research and clinical practice

Moran A, Hardin D, Rodman D, Allen HF, Beall RJ +20 more

PubMed

Skeletal muscle blood flow. A possible link between insulin resistance and blood pressure.

1993

Hypertension (Dallas, Tex. : 1979)

Baron AD, Brechtel-Hook G, Johnson A, Hardin D

Plain English
This study looked at how blood flow in the muscles responds to insulin and how that relates to insulin resistance and blood pressure in healthy people. Researchers found that when insulin levels were increased, leg blood flow improved by about 80%, while cardiac output increased by 37%. They discovered that people with higher baseline blood pressure had lower insulin sensitivity, which is important since it shows a connection between blood flow, insulin resistance, and blood pressure levels. Who this helps: This research benefits patients with insulin resistance and hypertension, as it may lead to better understanding and treatments.

PubMed

Effects of diabetes on myocardial glucose transport system in rats: implications for diabetic cardiomyopathy.

1993

The American journal of physiology

Garvey WT, Hardin D, Juhaszova M, Dominguez JH

Plain English
This research examined how diabetes affects the heart's ability to transport glucose in rats. It found that in diabetic rats, the transport of glucose into heart cells was reduced by 53%, and levels of a key glucose transporter called GLUT4 were decreased by 56%. Insulin treatment restored these levels, suggesting that better management of diabetes can help improve heart function. Who this helps: This helps patients with diabetes and healthcare providers managing their treatment.

PubMed

Solution of an inverse problem for fractals and other sets.

1986

Proceedings of the National Academy of Sciences of the United States of America

Barnsley MF, Ervin V, Hardin D, Lancaster J

Plain English
This research looked at how to describe certain complex shapes known as fractals more clearly and simply. The study found a method that simplifies these shapes effectively, making it easier to represent them mathematically. This is important because understanding these shapes can help in various scientific fields, including physics and computer graphics. Who this helps: This helps scientists and mathematicians working with complex data and models.

PubMed

Care of the well child: the school-age child and the school nurse.

1974

The American journal of nursing

Hardin D

PubMed

Frequent Co-Authors

Melissa A Miller Clare Dominik Stori C Oates Woutrina A Miller Patricia A Conrad Ann Melli David A Jessup Miles E Daniels Barbara A Byrne Timothy S McClintock

Physician data sourced from the NPPES NPI Registry . Publication data from PubMed . Plain-English summaries generated by AI. Not medical advice.