Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Marc A Antonchak, MD

Individual provider Rheumatology Physician · NPI 1982893103

Marc A Antonchak, MD practises Rheumatology in Columbus, Ohio. Graduated from Northeastern Ohio University College of Medicine in 2004, 22 years ago. Practices with Columbus Arthritis Center, Inc, a 20-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
22
Trained at
Northeastern Ohio University College of Medicine
Licensed in
OH
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1211 Dublin Rd
Columbus, OH 43215-1091
Phone: (614) 486-5200
Fax: (614) 486-9665
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 170 Taylor Station Rd Ste 300, Columbus, OH 43213-4491 — (614) 486-5200

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 35089230 (OH)

Record details

NPI number1982893103
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 24, 2007
Last updated in NPPESAugust 26, 2025
Certification dateAugust 26, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Columbus Arthritis Center, Inc. — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients573
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $2,960 168 payments · a meal or drink at a meeting or visit, not a fee
Education $53 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Columbus Arthritis Center, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 20 clinicians in the practice; 12 are shown here.

Other providers in Columbus