About
Benjamin H. Greiner, DO, MPH is a board-certified Internal Medicine physician practicing concierge medicine in Tulsa, Oklahoma. He earned his Doctorate of Osteopathic Medicine from Oklahoma State University Center for Health Sciences in 2020. He completed his internal medicine residency at the University of Texas Medical Branch in Galveston, where he served as Vice President and then Chair of the House Officer Association. He also holds a Master of Public Health from Oklahoma State University and a Bachelor of Science in Chemistry from the University of Central Oklahoma. The American Board of Internal Medicine has granted him full certification.
Dr. Greiner currently serves as a Captain and Field Surgeon in the Oklahoma Army National Guard, a role he has held since 2020. He also holds an appointment as Adjunct Clinical Assistant Professor of Internal Medicine at Oklahoma State University Center for Health Sciences. His research spans chronic disease, behavioral health, and health disparities, with published work in peer-reviewed journals including the Annals of Allergy, Asthma and Immunology and the Journal of Clinical and Translational Science. He uses motivational interviewing to help patients take an active role in their own health. Outside medicine, he works in leather crafting, reads spy thrillers, and scuba dives.
Education & Training
Additional Training
Master of Public Health (MPH)
Certifications
Who is Dr. Greiner right for?
Dr. Greiner is a strong fit for adults who want a physician invested in the whole person, not just isolated symptoms. Patients managing chronic conditions such as diabetes, high cholesterol, hypertension, or asthma benefit from his preventive and lifestyle-focused approach. His use of motivational interviewing suits patients ready to make sustained behavior changes. Adults who value direct physician access, including after-hours and video visits, will appreciate his 24/7 availability model.
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Frequently Asked Questions
Dr. Greiner focuses on internal medicine and preventive care for adults. He treats chronic conditions including diabetes, hypertension, high cholesterol, and asthma. He also addresses behavioral health concerns and uses lifestyle-based interventions alongside traditional medical treatment.
Dr. Greiner takes a holistic approach, treating the whole person rather than isolated symptoms. He integrates evidence-based lifestyle changes, nutritional guidance, stress management, and complementary therapies into each care plan. He also uses motivational interviewing to help patients become active participants in their own wellness.
Yes. Dr. Greiner holds board certification from the American Board of Internal Medicine. He earned his DO from Oklahoma State University Center for Health Sciences and completed his residency at the University of Texas Medical Branch in Galveston.
Dr. Greiner earned his Doctorate of Osteopathic Medicine at Oklahoma State University Center for Health Sciences in Tulsa. He completed both his internship and internal medicine residency at the University of Texas Medical Branch in Galveston. He also holds a Master of Public Health from Oklahoma State University.
Yes. Dr. Greiner continues to offer video visits for his patients. This is especially useful for members who travel or need care while away from Tulsa. He maintains this service even though Medicare has discontinued coverage for video visits in most cases.
Dr. Greiner makes himself available 24 hours a day, seven days a week. Patients reach him directly by phone, text, or secure messaging. He also offers same-day and next-day appointments during office hours.
Yes. Dr. Greiner has published peer-reviewed research on chronic disease, health disparities, and behavioral health. His work has appeared in journals including the Annals of Allergy, Asthma and Immunology and the Journal of Clinical and Translational Science. He currently serves as Adjunct Clinical Assistant Professor of Internal Medicine at Oklahoma State University Center for Health Sciences.
Yes. Dr. Greiner serves as a Captain and Field Surgeon in the Oklahoma Army National Guard. He has held a commission since 2016 and has served in a medical capacity since 2010, starting as a Combat Medic.
Dr. Greiner dedicates 30 minutes to an hour or more to each appointment. This allows him to explore patient concerns thoroughly and develop personalized care plans without time pressure.
Doctor profile last updated June 6, 2026