Quick answers
- Which hospitals does Gregory Mickunas work at?
- Medicare's official clinician data lists Gregory Mickunas at 4 hospitals: Holzer Medical Center, Holzer Medical Center Jackson, Marietta Memorial Hospital and OhioHealth O'Bleness Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Mickunas see patients?
- Medicare's clinician data lists 4 practice locations, including Gallipolis, OH, Marietta, OH and Jackson, OH. Call before your visit to confirm the address.
- What is Gregory Mickunas's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Gregory Mickunas accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Mickunas 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 Gregory Mickunas?
- (740) 446-5050, as listed in official Medicare / NPI Registry data.
- What is Gregory Mickunas's NPI number?
- 1225076458. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory Mickunas works
Medicare's Facility Affiliation Data lists Gregory Mickunas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holzer Medical CenterGallipolis, OH · Acute Care Hospital · CCN 360054
- Holzer Medical Center JacksonJackson, OH · Critical Access Hospital · CCN 361320
- Marietta Memorial HospitalMarietta, OH · Acute Care Hospital · CCN 360147
- OhioHealth O'Bleness HospitalAthens, OH · Acute Care Hospital · CCN 360014
Practice locations
Addresses where Gregory Mickunas is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Jackson PikeGallipolis, OH 45631 (740) 446‑5050
- 1106 Colegate DrMarietta, OH 45750 (740) 568‑2000
- 500 Burlington RdJackson, OH 45640 (740) 395‑8420
- 936 State Route 160Gallipolis, OH 45631 (740) 446‑4600
Group practices
Medicare enrollment lists Gregory Mickunas as a member of these groups (CMS data updated 2026-10-02).
- Marietta Memorial Hospital392 clinicians in the group
- Holzer Clinic LLC269 clinicians in the group
- Ohio Valley Physicians Inc129 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Gallipolis
Clinicians with the same Medicare primary specialty in Gallipolis, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wright State University Boonshoft School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225076458 |
| 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