Quick answers
- Which hospitals does Marc A. Antonchak work at?
- Medicare's official clinician data lists Marc A. Antonchak at 5 hospitals: Dublin Methodist Hospital, Fairfield Medical Center, Memorial Hospital, Mount Carmel East & West and Ohio State University State Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc A. Antonchak see patients?
- Medicare's clinician data lists 1 practice location in Columbus, OH. Call before your visit to confirm the address.
- What is Marc A. Antonchak's specialty?
- Medicare lists Rheumatology as the primary specialty, and also Internal Medicine.
- Does Marc A. Antonchak accept Medicare assignment?
- Yes. Medicare's clinician data says Marc A. Antonchak 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.
- Does Marc A. Antonchak offer telehealth?
- Medicare's clinician data says Marc A. Antonchak offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marc A. Antonchak?
- (614) 486-5200, as listed in official Medicare / NPI Registry data.
- What is Marc A. Antonchak's NPI number?
- 1982893103. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc A. Antonchak works
Medicare's Facility Affiliation Data lists Marc A. Antonchak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Dublin Methodist HospitalDublin, OH · Acute Care Hospital · CCN 360348
- Fairfield Medical CenterLancaster, OH · Acute Care Hospital · CCN 360072
- Memorial HospitalMarysville, OH · Acute Care Hospital · CCN 360092
- Mount Carmel East & WestColumbus, OH · Acute Care Hospital · CCN 360035
- Ohio State University State Health SystemColumbus, OH · Acute Care Hospital · CCN 360085
Practice locations
Addresses where Marc A. Antonchak is enrolled with Medicare (CMS data updated 2026-10-02).
- 1211 Dublin RdColumbus, OH 43215 (614) 486‑5200
Group practices
Medicare enrollment lists Marc A. Antonchak as a member of this group (CMS data updated 2026-10-02).
- Columbus Arthritis Center, Inc.21 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Columbus
Clinicians with the same Medicare primary specialty in Columbus, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northeastern Ohio University College Of Medicine |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982893103 |
| 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