John Mackovjak, M.D.
Ophthalmology Physician · Mt Pleasant, MI
John Mackovjak, M.D. is an ophthalmology physician with a practice address in Mt Pleasant, Michigan, and NPI 1386932945, issued on Jul 18, 2011. Check the license (Michigan 4301099081, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John Mackovjak
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 4301099081 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1535 E Broomfield St, Mt Pleasant, MI 48858
- Phone
- (989) 772-3339
- Enumerated
- Jul 18, 2011
- Record last updated
- Aug 16, 2023
- Fax
- (989) 772-4846
- Medicare enrollment
- Enrolled (PECOS I20150619000885); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2011
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Michigan → Look up another NPI →
Also registered at 1535 E Broomfield St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dominika Bizub, ODOptometrist1962248773
- Julia Holmes, O.D.Optometrist1912981176
Verify John Mackovjak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301099081Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average ophthalmology physician in 2024
5,152 Medicare Part D claims for 1,276 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Prednisolone Acetate1,332 claims
- Ketorolac Tromethamine1,162 claims
- Ofloxacin880 claims
- Latanoprost588 claims
- Timolol Maleate200 claims
- Brimonidine Tartrate191 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 98 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Lansing Ophthalmology, PCMt Pleasant, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Mackovjak among 791 ophthalmology physician records in Michigan
John Mackovjak, M.D. is one of 791 ophthalmology physician records with a practice address in Michigan. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 69% of them.
- NPI issued2011 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2002 among the 548 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Michigan
There are 791 ophthalmology physician records in Michigan.
All 791 in Michigan → Every provider in Mt Pleasant → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Jeffrey Barnes, M.D.Mt Pleasant, MI 488581073505350
- Michael Sullivan, M.D.Mt Pleasant, MI 488581639161912
- Jenn Liu, DOOkemos, MI 488641609875566
- Maria Galang-Qahwash, DOOwosso, MI 488671952594079
- Harry Wright, M.D.Owosso, MI 488671255370805
- Amy Eston, M.D.Howell, MI 488431588648158
- Anjulie Gang, MDHowell, MI 488431356703821
- Brandy Cook, D.O.Saint Johns, MI 488791710199450
Common questions
What is John Mackovjak, M.D.'s NPI number?
John Mackovjak, M.D.'s National Provider Identifier (NPI) is 1386932945, issued on Jul 18, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John Mackovjak, M.D. located?
The NPPES record lists a practice address at 1535 E Broomfield St, Mt Pleasant, MI, 48858. Phone: (989) 772-3339. Providers update this record themselves, so call before visiting.
How can I verify John Mackovjak, M.D.'s license?
NPPES lists Michigan license number 4301099081, 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 John Mackovjak, M.D. prescribe under Medicare Part D?
In 2024, John Mackovjak, M.D. had 5,152 Medicare Part D claims for 1,276 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Mackovjak, M.D.'s MIPS final score?
The 2023 MIPS final score is 98 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.