Lawrence J. McMaster, DO
Internal Medicine Physician · Ann Arbor, MI
Lawrence J. McMaster, DO is an internal medicine physician with a practice address in Ann Arbor, Michigan, and NPI 1316028541, issued on Oct 17, 2006. Check the license (Michigan 5101011410, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Lawrence J. McMaster
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5101011410 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2211 Old Earhart RD Ste 195, Ann Arbor, MI 48105
- Phone
- (734) 615-9200
- Enumerated
- Oct 17, 2006
- Record last updated
- Jan 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (734) 615-9205
- Medicaid ID
- 1316028541 MI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 2211 Old Earhart RD Ste 195
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Monica Dimagno, MDInternal Medicine Physician1063501930
- David Stutz, MDGeriatric Medicine (Internal Medicine) Physician1558451088
Verify Lawrence J. McMaster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101011410Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,994 Medicare Part D claims for 170 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. 61 claims were for opioids.
Most prescribed
- Atorvastatin Calcium148 claims
- Rosuvastatin Calcium120 claims
- Losartan Potassium98 claims
- Amlodipine Besylate97 claims
- Omeprazole69 claims
- Levothyroxine Sodium58 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.
Lawrence J. McMaster among 5,735 internal medicine physician records in Michigan
Lawrence J. McMaster, DO is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
479 internal medicine physician records list a practice address in Ann Arbor
They are 479 of the 15,616 NPPES records with a practice address in Ann Arbor, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Ann Arbor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Karl Brenner, M.D.Ann Arbor, MI 481051033186770
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- Blanka Girard, MDAnn Arbor, MI 481051295730745
- Martha Gray, MDAnn Arbor, MI 481051801892294
- Sara Hashemian, MDAnn Arbor, MI 481051427054006
- Jyotsna Kapoor, M.D.Ann Arbor, MI 481051750359527
- Peter Paul, MDAnn Arbor, MI 481051407853617
- Edward Post, MDAnn Arbor, MI 481051851366306
Common questions
What is Lawrence J. McMaster, DO's NPI number?
Lawrence J. McMaster, DO's National Provider Identifier (NPI) is 1316028541, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence J. McMaster, DO located?
The NPPES record lists a practice address at 2211 Old Earhart RD Ste 195, Ann Arbor, MI, 48105. Phone: (734) 615-9200. Providers update this record themselves, so call before visiting.
How can I verify Lawrence J. McMaster, DO's license?
NPPES lists Michigan license number 5101011410, 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 Lawrence J. McMaster, DO prescribe under Medicare Part D?
In 2024, Lawrence J. McMaster, DO had 1,994 Medicare Part D claims for 170 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.