Mark C. Antonishen, M.D.
Internal Medicine Physician · Boyne City, MI
Mark C. Antonishen, M.D. is an internal medicine physician with a practice address in Boyne City, Michigan, and NPI 1518971654, issued on Jul 27, 2006. Check the license (Michigan 4301046169, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark C. Antonishen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301046169 MI
Self-reported in NPPES; status is on the state search - Practice location
- 223 N Park St, Boyne City, MI 49712
- Phone
- (231) 582-8010
- Enumerated
- Jul 27, 2006
- Record last updated
- Feb 2, 2024
- Fax
- (231) 582-5338
- Medicaid ID
- 104102303 MI
- Medicare enrollment
- Enrolled (PECOS I20050602000214); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1981
- Entity
- Type 1 · individual
Also registered at 223 N Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Candace Bolcer, DOFamily Medicine Physician1952091563
- Michael Harmeling, MDFamily Medicine Physician1194836502
- Pamela Knysz, MDFamily Medicine Physician1619088044
- Leonhard Maendel, P.A.Medical Physician Assistant1629138854
- Amy Mitchell, MDFamily Medicine Physician1417068891
- Lisa Thiel, MSWSocial Worker1154866408
Verify Mark C. Antonishen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301046169Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,404 Medicare Part D claims for 569 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 194 claims were for opioids.
Most prescribed
- Atorvastatin Calcium672 claims
- Lisinopril455 claims
- Levothyroxine Sodium344 claims
- Omeprazole341 claims
- Amlodipine Besylate329 claims
- Metoprolol Succinate288 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $43.27
3 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Munson Healthcare Charlevoix HospitalBoyne City, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Internal Medicine Physician providers in Michigan
There are 5,735 internal medicine physician records in Michigan.
Other internal medicine physician records in Michigan
- Jamie Therese Abad, MDDetroit, MI1700573359
- Tomas Abalo, M.D.Iron Mountain, MI1336199975
- Ali Abbas, M.D.Pontiac, MI1972167526
- Sura Abbas, MDWarren, MI1801687405
- Ramzi Abbasi, MDSaginaw, MI1164270005
- Saadat Abbasi, MDKalamazoo, MI1912005596
- Shahzaman Abbasi, MDLansing, MI1376512111
- Youssef Abbiss, D.O.Mount Clemens, MI1982991881
- Valerie Abbott, MDSouthfield, MI1740289487
- Samer Abboud, MDSaginaw, MI1245804178
Common questions
What is Mark C. Antonishen, M.D.'s NPI number?
Mark C. Antonishen, M.D.'s National Provider Identifier (NPI) is 1518971654, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark C. Antonishen, M.D. located?
The NPPES record lists a practice address at 223 N Park St, Boyne City, MI, 49712. Phone: (231) 582-8010. Providers update this record themselves, so call before visiting.
How can I verify Mark C. Antonishen, M.D.'s license?
NPPES lists Michigan license number 4301046169, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark C. Antonishen, M.D. prescribe under Medicare Part D?
In 2024, Mark C. Antonishen, M.D. had 8,404 Medicare Part D claims for 569 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.