Clare Masternak, PA-C
Physician Assistant · Ann Arbor, MI
Clare Masternak, PA-C is a physician assistant with a practice address in Ann Arbor, Michigan, and NPI 1467926485, issued on Jan 12, 2019. Check the license (Michigan 5601009847, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Clare Masternak
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 5601009847 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-4000
- Enumerated
- Jan 12, 2019
- Record last updated
- Jul 5, 2022
- Medicare enrollment
- Enrolled (PECOS I20201203002021); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 6,989 in Michigan → Look up another NPI →
Also registered at 1500 E Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Clare Masternak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 5601009847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average physician assistant in 2024
1,079 Medicare Part D claims for 239 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Alendronate Sodium445 claims
- Teriparatide209 claims
- Tymlos131 claims
- Forteo85 claims
- Trueplus Pen Needle69 claims
- Ultra-Fine Mini Pen Needle58 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.
Bills Medicare through one group practice
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clare Masternak among 6,989 physician assistant records in Michigan
Clare Masternak, PA-C is one of 6,989 physician assistant records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 61% of them.
- NPI issued2019 · 61% of these records are older, 34% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2019 · median 2017 among the 4,739 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
610 physician assistant records list a practice address in Ann Arbor
They are 610 of the 15,616 NPPES records with a practice address in Ann Arbor, and 6,989 physician assistant records in Michigan.
All 6,989 in Michigan → Every provider in Ann Arbor → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Joseph Allgeyer, PAAnn Arbor, MI 481091558338426
- Kimberly Bernreuter, PAAnn Arbor, MI 481091942270095
- Martin Bond, PAAnn Arbor, MI 481091245226364
- Andrea Botterill, PAAnn Arbor, MI 481091356343370
- Elizabeth Dubois, PACAnn Arbor, MI 481091821096074
- Laura Durecka, PA-CAnn Arbor, MI 481091871575712
- Jillian Etcubanez, PA-CAnn Arbor, MI 481091184604365
- Heather Fox, PAAnn Arbor, MI 481091437146297
Common questions
What is Clare Masternak, PA-C's NPI number?
Clare Masternak, PA-C's National Provider Identifier (NPI) is 1467926485, issued on Jan 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Clare Masternak, PA-C located?
The NPPES record lists a practice address at 1500 E Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-4000. Providers update this record themselves, so call before visiting.
How can I verify Clare Masternak, PA-C's license?
NPPES lists Michigan license number 5601009847, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Clare Masternak, PA-C prescribe under Medicare Part D?
In 2024, Clare Masternak, PA-C had 1,079 Medicare Part D claims for 239 beneficiaries; the average among physician assistant prescribers was 830. 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.