Quick answers
- Which hospitals does Marvin P. Baker work at?
- Medicare's official clinician data lists Marvin P. Baker at 5 hospitals: Independence Health System Butler Memorial Hospita…, Independence Health System Clarion Hospital, Magee Womens Hospital of UPMC Health System, Penn Highlands Dubois and UPMC Jameson. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marvin P. Baker see patients?
- Medicare's clinician data lists 7 practice locations, including Clarion, PA and Butler, PA. Call before your visit to confirm the address.
- What is Marvin P. Baker's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Marvin P. Baker accept Medicare assignment?
- Yes. Medicare's clinician data says Marvin P. Baker 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 Marvin P. Baker?
- (724) 284-4309, as listed in official Medicare / NPI Registry data.
- What is Marvin P. Baker's NPI number?
- 1285661371. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marvin P. Baker works
Medicare's Facility Affiliation Data lists Marvin P. Baker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Independence Health System Butler Memorial Hospita…Butler, PA · Acute Care Hospital · CCN 390168
- Independence Health System Clarion HospitalClarion, PA · Acute Care Hospital · CCN 390093
- Magee Womens Hospital of UPMC Health SystemPittsburgh, PA · Acute Care Hospital · CCN 390114
- Penn Highlands DuboisDubois, PA · Acute Care Hospital · CCN 390086
- UPMC JamesonNew Castle, PA · Acute Care Hospital · CCN 390016
Practice locations
Addresses where Marvin P. Baker is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1 Hospital DrClarion, PA 16214
- 1 Hospital WayButler, PA 16001
- 1 Hospital Way 4, Butler Infectious Disease ServicesButler, PA 16001 (724) 284‑4309
- 127 Oneida Valley RdButler, PA 16001
- 127 Oneida Valley Rd, Suite 400Butler, PA 16001 (866) 620‑6761
Group practices
Medicare enrollment lists Marvin P. Baker as a member of this group (CMS data updated 2026-10-02).
- Butler Medical Providers360 clinicians in the group
Specialties
Other internal medicine doctors in Clarion
Clinicians with the same Medicare primary specialty in Clarion, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285661371 |
| 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