Quick answers
- Which hospitals does Marcus Ma work at?
- Medicare's official clinician data lists Marcus Ma at 4 hospitals: Garden City Hospital, Harlan Arh Hospital, Lake Health and Middlesboro Arh Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marcus Ma see patients?
- Medicare's clinician data lists 3 practice locations, including Willoughby, OH, Barbourville, KY and Harlan, KY. Call before your visit to confirm the address.
- What is Marcus Ma's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Marcus Ma accept Medicare assignment?
- Yes. Medicare's clinician data says Marcus Ma 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 Marcus Ma?
- (440) 375-8166, as listed in official Medicare / NPI Registry data.
- What is Marcus Ma's NPI number?
- 1336102847. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marcus Ma works
Medicare's Facility Affiliation Data lists Marcus Ma at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Garden City HospitalGarden City, MI · Acute Care Hospital · CCN 230244
- Harlan Arh HospitalHarlan, KY · Acute Care Hospital · CCN 180050
- Lake HealthConcord, OH · Acute Care Hospital · CCN 360098
- Middlesboro Arh HospitalMiddlesboro, KY · Acute Care Hospital · CCN 180020
Practice locations
Addresses where Marcus Ma is enrolled with Medicare (CMS data updated 2026-10-02).
- 36000 Euclid AveWilloughby, OH 44094 (440) 375‑8166
- 80 Hospital DrBarbourville, KY 40906 (606) 546‑4175
- 81 Ball Park RdHarlan, KY 40831 (606) 573‑8100
Group practices
Medicare enrollment lists Marcus Ma as a member of these groups (CMS data updated 2026-10-02).
- Green Valley Emergency Physicians, LLC36 clinicians in the group
- Emergency Medicine Physicians of Lake County Ltd14 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336102847 |
| 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