Critical Care Doctors (Internal Medicine) in Oklahoma
Data updated monthly · Last refresh October 2026
39 Critical Care Medicine (Internal Medicine) providers practice in Oklahoma, including 3 (8%) offering telehealth. The largest concentration is in Oklahoma City. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
39providers
3telehealth
Oklahoma Citytop city
Critical Care Medicine (Internal Medicine) by city in Oklahoma
Choose a city to see providers there.
Where Critical Care Doctors (Internal Medicine) in Oklahoma practice
From CMS Medicare enrollment records covering 26 of the 39 providers listed here (67%). Providers who do not bill Medicare are not included in these figures.
8%solo or small practice (under 10 clinicians)
19%mid-size group (10 to 99)
73%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Critical Care Doctors (Internal Medicine) | All clinicians in group | Main city |
| Integris Ambulatory Care Corp.oration | 5 | 687 | Oklahoma City |
| Ou Health Partners Inc. | 4 | 1,167 | Oklahoma City |
| Warren Clinic Inc. | 4 | 787 | Tulsa |
| Zuhdi Transplant Physicians | 3 | 49 | Oklahoma City |
| Ahs Oklahoma Physician Group LLC | 2 | 314 | Sand Springs |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Critical Care Doctors (Internal Medicine) affiliated |
| Integris Baptist Medical Center, Inc. | Oklahoma City | Nonprofit | 3 of 5 | 8 |
| Saint Francis Hospital, Inc. | Tulsa | Nonprofit | 5 of 5 | 4 |
| O U Medical Center | Oklahoma City | Nonprofit | 2 of 5 | 4 |
| Hillcrest Medical Center | Tulsa | For-profit | 3 of 5 | 2 |
| Integris Health Edmond Hospital | Edmond | Nonprofit | 2 of 5 | 2 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Critical Care Medicine (Internal Medicine) providers in Oklahoma
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Kevin Reed, MDArdmore, OK · No drug or device payments recorded (2025) ·
(580) 220-6132 Dr. Nicole Cossaart, M.D.Mcalester, OK · No drug or device payments recorded (2025) ·
(918) 426-1800 Dr. Ahmed Alsaei, M.DOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 949-3011 Dr. Ali Ashraf, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 608-3800 Dr. Ali Mohammad, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 948-4900 Dr. Brent Brown, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-7001 Dr. Cameron Upchurch, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 949-3011 Dr. David Levin, MDOklahoma City, OK · $110 in drug and device payments (2025) ·
(405) 271-7001 Dr. Donald Mccaffree, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-7001 Dr. Himanshu Bhardwaj, MDOklahoma City, OK · $80 in drug and device payments (2025) · Telehealth ·
(405) 271-5963 Dr. John Huff, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 753-6200 Dr. Jordan Metcalf, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-7001 Dr. Joseph Brewer, D.O.Oklahoma City, OK · $428 in drug and device payments (2025) ·
(405) 949-3349 Dr. Laura Swant, DOOklahoma City, OK · $334 in drug and device payments (2025) ·
(405) 949-3349 Dr. Mahmoud Alwakeel, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-4700 Dr. Mark Rolfe, MDOklahoma City, OK · $229 in drug and device payments (2025) ·
(405) 949-3349 Dr. Matthew Britt, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 753-6200 Dr. Michael Harper, MDOklahoma City, OK · $953 in drug and device payments (2025) ·
(405) 949-3349 Dr. Mircea Mihu, MDOklahoma City, OK · $334 in drug and device payments (2025) ·
(405) 949-3349 Dr. Nobuhiko Kimura, MDOklahoma City, OK · $42 in drug and device payments (2025) ·
(405) 271-4700 Dr. Obaid Ashraf, MDOklahoma City, OK · $1,085 in drug and device payments (2025) · Telehealth ·
(405) 949-3011 Dr. Pamela Roberts, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-4351 Dr. Paul Carlile, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-7001 Dr. Syed Anwer, MDOklahoma City, OK · $1,193 in drug and device payments (2025) · Telehealth ·
(405) 272-6406 Dr. John Galdamez, D.O.Tahlequah, OK · No drug or device payments recorded (2025) ·
(918) 456-0641 Dr. Ghassan Tawil, M.D.Tulsa, OK · No drug or device payments recorded (2025) ·
(918) 493-6000 Dr. Michaela Sangillo, DO Dr. Muhammad Shaukat, MDTulsa, OK · No drug or device payments recorded (2025) ·
(918) 232-6915 Dr. Richard Tannen, MDTulsa, OK · No drug or device payments recorded (2025) ·
(918) 286-5000 Dr. Rodney Beasley, MDTulsa, OK · No drug or device payments recorded (2025) ·
(918) 502-1900 Dr. Sudheer Nambiar, MDTulsa, OK · No drug or device payments recorded (2025) ·
(918) 286-5000 Common questions
How many Critical Care Medicine (Internal Medicine) providers are in Oklahoma?There are 39 Critical Care Medicine (Internal Medicine) providers with active NPI records practicing in Oklahoma, according to federal NPPES data refreshed monthly.
Do Critical Care Medicine (Internal Medicine) providers in Oklahoma offer telehealth?Yes. 3 of the 39 Critical Care Medicine (Internal Medicine) providers in Oklahoma (about 8%) report offering telehealth services in CMS data.
Which cities in Oklahoma have the most Critical Care Medicine (Internal Medicine) providers?Oklahoma City (22), Tulsa (13), Norman (1) have the highest concentration of Critical Care Medicine (Internal Medicine) providers in Oklahoma.
How many Critical Care Medicine (Internal Medicine) providers in Oklahoma received drug or device company payments?19 of 39 Critical Care Medicine (Internal Medicine) providers in Oklahoma (49%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Critical Care Doctors (Internal Medicine) in Oklahoma work in independent practices or large health systems?Among 26 Critical Care Doctors (Internal Medicine) in Oklahoma enrolled in Medicare, 8% bill through a solo or small practice with fewer than 10 clinicians, 19% through a mid-size group of 10 to 99, and 73% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Critical Care Doctors (Internal Medicine) in Oklahoma work at?According to CMS facility affiliation records, the Oklahoma hospitals where the most Critical Care Doctors (Internal Medicine) hold privileges are Integris Baptist Medical Center, Inc. in Oklahoma City; Saint Francis Hospital, Inc. in Tulsa; O U Medical Center in Oklahoma City.
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