Quick answers
- Which hospitals does Michael Sumner work at?
- Medicare's official clinician data lists Michael Sumner at 5 hospitals: Northeastern Health System, Saint Francis Hospital Muskogee, Saint Francis Hospital South, LLC, Saint Francis Hospital Vinita, Inc and Saint Francis Hospital, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Sumner see patients?
- Medicare's clinician data lists 2 practice locations, including Muskogee, OK and Tulsa, OK. Call before your visit to confirm the address.
- What is Michael Sumner's specialty?
- Medicare lists Advanced Heart Failure and Transplant Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Michael Sumner accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Sumner accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Michael Sumner offer telehealth?
- Medicare's clinician data says Michael Sumner offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael Sumner?
- (918) 682-5501, as listed in official Medicare / NPI Registry data.
- What is Michael Sumner's NPI number?
- 1639528656. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Sumner works
Medicare's Facility Affiliation Data lists Michael Sumner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northeastern Health SystemTahlequah, OK · Acute Care Hospital · CCN 370089
- Saint Francis Hospital MuskogeeMuskogee, OK · Acute Care Hospital · CCN 370025
- Saint Francis Hospital South, LLCTulsa, OK · Acute Care Hospital · CCN 370218
- Saint Francis Hospital Vinita, IncVinita, OK · Acute Care Hospital · CCN 370237
- Saint Francis Hospital, IncTulsa, OK · Acute Care Hospital · CCN 370091
Practice locations
Addresses where Michael Sumner is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Rockefeller DrMuskogee, OK 74401 (918) 682‑5501
- 6161 S Yale AveTulsa, OK 74136 (918) 502‑4720
Group practices
Medicare enrollment lists Michael Sumner as a member of these groups (CMS data updated 2026-10-02).
- Warren Clinic Inc883 clinicians in the group
- Saint Francis Hospital, Inc.61 clinicians in the group
- Saint Francis Hospital Muskogee Inc12 clinicians in the group
Specialties
Find other Advanced Heart Failure and Transplant Cardiology doctors in Oklahoma →
Other heart failure and transplant cardiologists in Oklahoma
Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.
- Aaron J. Kelkhoff, MD
- Tarun Dasari, MD
- Mohamad H. Khattab, DO
- Ralph D. Ensley, MD
- Alexander Hajduczok, MD
- Carrie Eshelbrenner, MD
- Sandra Rodriguez, MD
- Nina E. Williams, MD
All heart failure and transplant cardiologists in Oklahoma →
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639528656 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians