Jacqueline Petray, M.D. at Warren Clinic Internal Medicine is a trusted provider with over 35 years of experience in adult medicine. A graduate of the University of Arkansas for Medical Sciences and residency-trained at the University of Oklahoma, Dr. Petray is board-certified in Internal Medicine and known for her thorough, patient-centered approach. She treats a wide range of conditions including hypertension, diabetes, asthma, and more. Patients appreciate her clear communication, attention to detail, and dedication to long-term wellness. Reasons to see Dr. Petray: * Over 35 years of experience in adult primary care and chronic disease management * Affiliated with leading Tulsa hospitals and highly rated for patient satisfaction * Known for thorough evaluations, clear communication, and personalized care. Dr. Petray is highly rated in 5 conditions, according to our data. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Dr. Micah Derby, D.O., is a board-certified primary care physician and an AAHIVS-certified HIV specialist. He provides expert care for individuals living with HIV and Hepatitis C, offering advanced prevention and treatment options such as PrEP (pre-exposure prophylaxis) and PEP (post-exposure prophylaxis). As both a primary care provider and HIV specialist in Tulsa , Dr. Derby delivers integrated, patient-centered care that ensures continuity and improves long-term health outcomes. His dual role allows patients to receive comprehensive medical support in one location, streamlining their healthcare experience. Dr. Derby also offers fast-tracked Hepatitis C treatment , helping patients avoid long waits for gastroenterology referrals. This approach enables quicker access to care and better health outcomes for those affected by Hepatitis C. Why Choose Dr. Derby? Expert HIV & Hepatitis C Care Personalized & Timely Treatment Plans for HIV, Hepatitis and other Chronic Conditions Focus on Preventive Care & Early Detection/Annual Wellness Visits Conveniently located in the Saint Francis Yale Campus Compassionate, Patient-Centered Approach. Dr. Derby is highly rated in 4 conditions, according to our data. His top areas of expertise are Myelitis, AIDS Dementia Complex, HIV/AIDS, AIDS Dysmorphic Syndrome, and Endoscopy.

Teresa Hardesty, D.O. is an internal medicine physician at Warren Clinic in Tulsa, Oklahoma. With a focus on adult primary care, Dr. Hardesty provides personalized medical care tailored to each patient's unique needs, ensuring a healthier, happier life. Dr. Hardesty specializes in managing chronic conditions, preventive care, and diagnosing complex medical issues. Her patient-centered approach prioritizes building strong relationships and empowering patients to take control of their health. If you're looking for an experienced, caring physician in Tulsa, discover why patients trust Dr. Teresa Hardesty and Warren Clinic for their internal medicine needs. Her top areas of expertise are Chronic Cough, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension.

Amritanshu Singh, D.O. at Saint Francis Health System offers comprehensive, patient-focused care for adults of all ages. With board certification in Internal Medicine and years of experience treating a wide range of chronic and acute conditions, Dr. Singh is known for his attentive listening, thorough diagnostics, and commitment to long-term wellness. He practices at the Saint Francis Sleep Center. Whether you're managing diabetes, hypertension, or seeking preventive care, Dr. Singh provides personalized treatment plans grounded in the latest medical research. Highlights: * Board-certified internist with expertise in adult primary care and chronic disease management * Affiliated with leading Tulsa hospitals and praised for patient-centered care * Offers specialized services including sleep medicine evaluations and treatment. His top areas of expertise are Obstructive Sleep Apnea, Central Sleep Apnea, Drowsiness, and Excessive Daytime Sleepiness.

Tito Razdan is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Razdan has been practicing medicine for over 37 years is highly rated in 15 conditions, according to our data. His top areas of expertise are Vertigo, Chronic Cough, Fainting, Hip Replacement, and Endoscopy.

If you're looking for a knowledgeable and approachable internal medicine physician in Tulsa, Dr. Benjamin Houston Greiner, D.O., M.P.H. at Warren Clinic Internal Medicine provides comprehensive care tailored to adult patients. Board-certified and trained at Oklahoma State University Center for Health Sciences, Dr. Greiner specializes in managing chronic conditions such as hypertension, diabetes, obesity, asthma, and seasonal allergies. With a reputation for clear communication and a patient-first approach, he helps individuals take control of their health through preventive care and evidence-based treatment. Board-certified internist with expertise in chronic disease management and preventive care Practices at Warren Clinic Tower in Tulsa—offering convenient access and coordinated services Highly rated for attentive listening, thorough evaluations, and clear medical explanations.

Dr. Michael Hiebert, D.O., is a board-certified family medicine physician and an AAHIVS-certified HIV specialist proudly serving the Tulsa, Oklahoma community. He offers expert care for individuals living with HIV and Hepatitis C , including access to PrEP (pre-exposure prophylaxis) and PEP (post-exposure prophylaxis) for HIV prevention. As both a primary care doctor and HIV specialist , Dr. Hiebert provides a holistic, integrated care model that supports patients through every stage of their health journey. This dual expertise ensures continuity of care and a more personalized healthcare experience—all in one convenient location. Dr. Hiebert also offers accelerated Hepatitis C treatment without a long wait time for a gastroenterology referral, helping patients begin therapy sooner and achieve better health outcomes. Why Choose Dr. Hiebert? Specialized HIV & Hepatitis C Treatment with AAHIVS certification Timely, Personalized Care Plans for chronic conditions and preventive health Comprehensive Primary Care with a focus on long-term wellness Located at the Saint Francis Yale Campus in Tulsa for easy access Compassionate, Patient-Focused Approach to every visit.

If you're looking for a dedicated internal medicine physician in Tulsa, Dr. Kenneth Daniel Ostmo, D.O. at Warren Clinic Internal Medicine offers comprehensive, patient-centered care for adults of all ages. With board certification and training from Oklahoma State University Center for Health Sciences, Dr. Ostmo is known for his thorough evaluations, clear communication, and commitment to long-term wellness. He provides a full range of services—from preventive care and annual wellness visits to chronic disease management—tailored to each patient’s unique needs. Why choose Dr. Ostmo: Board-certified in Internal Medicine with advanced training from OSU Center for Health Sciences Practices at Warren Clinic Tower in Tulsa, offering convenient access and coordinated care Highly rated for patient satisfaction, clear communication, and personalized treatment plans.

Dr. Taryn Haney, D.O., is a board-certified family medicine physician and an AAHIVS-certified HIV care provider, proudly serving patients in Tulsa, Oklahoma. She specializes in the diagnosis, treatment, and prevention of HIV and Hepatitis C , offering advanced options like PrEP (pre-exposure prophylaxis) and PEP (post-exposure prophylaxis) to support sexual health and reduce transmission risk. As both a primary care doctor and HIV specialist , Dr. Haney delivers coordinated, whole-person care that supports long-term wellness. Her integrated approach allows patients to receive both routine and specialized care in one convenient setting, improving continuity and outcomes. Dr. Haney also provides streamlined Hepatitis C treatment without long waits for a referral to a gastroenterologist—helping patients begin treatment faster and with fewer barriers to care. Why Choose Dr. Haney? Certified HIV Specialist with AAHIVS credentials Comprehensive Primary & Preventive Care tailored to each patient’s needs Quick Access to Hepatitis C Treatment Conveniently Located at Saint Francis Yale Campus in Tulsa Compassionate, Inclusive, and Patient-Focused Care Philosophy.

Arvid Lade is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Lade is highly rated in 32 conditions, according to our data. His top areas of expertise are Dementia, Swallowing Difficulty, Painful Swallowing, and Chronic Obstructive Pulmonary Disease (COPD).

Aaron Fieker is an Internal Medicine provider in Tulsa, Oklahoma. Dr. Fieker is highly rated in 28 conditions, according to our data. His top areas of expertise are Viral Gastroenteritis, Colitis, Painful Swallowing, Gastrectomy, and Endoscopy.

John Ivanoff is an Internal Medicine provider in Tulsa,, Oklahoma. Dr. Ivanoff is highly rated in 23 conditions, according to our data. His top areas of expertise are Aortic Valve Stenosis, Arterial Embolism, Atherosclerosis, and Coronary Heart Disease.

Henry Co is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Co is highly rated in 19 conditions, according to our data. His top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Anemia, Gallbladder Disease, Gastrostomy, and Pacemaker Implantation.

Stanley Zimmerman is an Internal Medicine provider in Tulsa,, Oklahoma. Dr. Zimmerman is highly rated in 19 conditions, according to our data. His top areas of expertise are Necrosis, Carotid Artery Disease, Abdominal Aortic Aneurysm (AAA), Angina, and Endoscopy.

Mathew Good is an Internal Medicine provider in Tulsa, Oklahoma. Dr. Good is highly rated in 18 conditions, according to our data. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Carotid Artery Disease, and Aortic Regurgitation.

Ronald Brown is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Brown is highly rated in 7 conditions, according to our data. His top areas of expertise are Peptic Ulcer, Necrosis, Cellulitis, and Type 2 Diabetes (T2D).

Lam Le is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Le has been practicing medicine for over 26 years is highly rated in 12 conditions, according to our data. Her top areas of expertise are Compartment Syndrome, Peptic Ulcer, Necrosis, and Cellulitis.

Joe Reese is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Reese has been practicing medicine for over 47 years is highly rated in 10 conditions, according to our data. His top areas of expertise are Gallstones, Gallbladder Disease, Osteomyelitis in Children, Bone Marrow Aspiration, and Gastrostomy.

Vincent Bryan is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Bryan has been practicing medicine for over 34 years is highly rated in 10 conditions, according to our data. His top areas of expertise are Abdominal Obesity Metabolic Syndrome, Type B Insulin Resistance Syndrome, Cytochrome C Oxidase Deficiency, and Mitochondrial Complex V Deficiency.

Mark Galles is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Galles has been practicing medicine for over 36 years is highly rated in 8 conditions, according to our data. His top areas of expertise are Sitosterolemia, Exercise-Induced Anaphylaxis (EIA), Anaphylaxis, Cardiac Ablation, and Hip Replacement.

Gerard Mcnulty is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Mcnulty has been practicing medicine for over 39 years is highly rated in 6 conditions, according to our data. His top areas of expertise are Sitosterolemia, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

Scott Asakevich is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Asakevich has been practicing medicine for over 25 years is highly rated in 5 conditions, according to our data. His top areas of expertise are Postmenopausal Osteoporosis, Osteoporosis, Familial Hypertension, and Hypertension.

Steven Geister is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Geister has been practicing medicine for over 18 years is highly rated in 5 conditions, according to our data. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, Bone Graft, and Vertebroplasty.

Peter Lantz is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Lantz has been practicing medicine for over 47 years is highly rated in 4 conditions, according to our data. His top areas of expertise are Breast Cancer, Glucocorticoid-Remediable Aldosteronism, Hypertension, Cardiac Ablation, and Gastrostomy.

Philip Hess is a primary care provider, practicing in Internal Medicine in Tulsa, Oklahoma. Dr. Hess has been practicing medicine for over 47 years is highly rated in 1 condition, according to our data. His top areas of expertise are Ventricular Tachycardia, Fibrosarcoma, Acute Lymphoblastic Leukemia (ALL), and Mesenchymoma.