Quick answers
- Which hospitals does John K. Bartnik work at?
- Medicare's official clinician data lists John K. Bartnik at 5 hospitals: Covenant Medical Center, Hills & Dales General Hospital, Marlette Regional Hospital, MyMichigan Medical Center Saginaw and Scheurer Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John K. Bartnik see patients?
- Medicare's clinician data lists 1 practice location in Saginaw, MI. Call before your visit to confirm the address.
- What is John K. Bartnik's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does John K. Bartnik accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Bartnik 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.
- What is the phone number for John K. Bartnik?
- (989) 791-2330, as listed in official Medicare / NPI Registry data.
- What is John K. Bartnik's NPI number?
- 1740211275. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John K. Bartnik works
Medicare's Facility Affiliation Data lists John K. Bartnik at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Covenant Medical CenterSaginaw, MI · Acute Care Hospital · CCN 230070
- Hills & Dales General HospitalCass City, MI · Critical Access Hospital · CCN 231316
- Marlette Regional HospitalMarlette, MI · Critical Access Hospital · CCN 231330
- MyMichigan Medical Center SaginawSaginaw, MI · Acute Care Hospital · CCN 230077
- Scheurer HospitalPigeon, MI · Critical Access Hospital · CCN 231310
Practice locations
Addresses where John K. Bartnik is enrolled with Medicare (CMS data updated 2026-10-02).
- 5400 Mackinaw Rd, Suite 4200Saginaw, MI 48604 (989) 791‑2330
Group practices
Medicare enrollment lists John K. Bartnik as a member of this group (CMS data updated 2026-10-02).
- Oncology Hematology Associates of Saginaw Valley, P.C.3 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Saginaw
Clinicians with the same Medicare primary specialty in Saginaw, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740211275 |
| 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