Quick answers
- Which hospitals does Michael H. Mastromichalis work at?
- Medicare's official clinician data lists Michael H. Mastromichalis at 3 hospitals: Braxton County Memorial Hospital, Inc, Charleston Area Medical Center and Thomas Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael H. Mastromichalis see patients?
- Medicare's clinician data lists 1 practice location in South Charleston, WV. Call before your visit to confirm the address.
- What is Michael H. Mastromichalis's specialty?
- Medicare lists Urology as the primary specialty.
- Does Michael H. Mastromichalis accept Medicare assignment?
- Yes. Medicare's clinician data says Michael H. Mastromichalis 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 Michael H. Mastromichalis?
- (304) 766-1133, as listed in official Medicare / NPI Registry data.
- What is Michael H. Mastromichalis's NPI number?
- 1346444700. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael H. Mastromichalis works
Medicare's Facility Affiliation Data lists Michael H. Mastromichalis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Braxton County Memorial Hospital, IncGassaway, WV · Critical Access Hospital · CCN 511308
- Charleston Area Medical CenterCharleston, WV · Acute Care Hospital · CCN 510022
- Thomas Memorial HospitalSouth Charleston, WV · Acute Care Hospital · CCN 510029
Practice locations
Addresses where Michael H. Mastromichalis is enrolled with Medicare (CMS data updated 2026-10-02).
- 4607 Maccorkle Ave SW, Suite 206South Charleston, WV 25309 (304) 766‑1133
Group practices
Medicare enrollment lists Michael H. Mastromichalis as a member of this group (CMS data updated 2026-10-02).
- THS Physician Partners Inc378 clinicians in the group
Specialties
- Urologyprimary
Other urologists in West Virginia
Clinicians with the same Medicare primary specialty in West Virginia — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia University School Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346444700 |
| 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