Quick answers
- Which hospitals does Mark L. Heyd work at?
- Medicare's official clinician data lists Mark L. Heyd at 2 hospitals: UPMC Chautauqua at Wca and UPMC Hamot. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark L. Heyd see patients?
- Medicare's clinician data lists 3 practice locations, including Erie, PA. Call before your visit to confirm the address.
- What is Mark L. Heyd's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mark L. Heyd accept Medicare assignment?
- Yes. Medicare's clinician data says Mark L. Heyd 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 Mark L. Heyd?
- (814) 877-6000, as listed in official Medicare / NPI Registry data.
- What is Mark L. Heyd's NPI number?
- 1750381133. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark L. Heyd works
Medicare's Facility Affiliation Data lists Mark L. Heyd at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC Chautauqua at WcaJamestown, NY · Acute Care Hospital · CCN 330239
- UPMC HamotErie, PA · Acute Care Hospital · CCN 390063
Practice locations
Addresses where Mark L. Heyd is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 State StErie, PA 16550 (814) 877‑6000
- 201 State St, Fl 8Erie, PA 16550 (814) 877‑7246
- 3406 Peach StErie, PA 16508 (814) 877‑5381
Group practices
Medicare enrollment lists Mark L. Heyd as a member of this group (CMS data updated 2026-10-02).
- Regional Health Services Inc568 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Erie
Clinicians with the same Medicare primary specialty in Erie, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750381133 |
| 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