William F. Armstrong, MD
Cardiovascular Disease Physician · Ann Arbor, MI
William F. Armstrong, MD is a cardiovascular disease physician with a practice address in Ann Arbor, Michigan, and NPI 1487739553, issued on Oct 26, 2006. Check the license (Michigan 4301055513, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William F. Armstrong
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 4301055513 MI
Self-reported in NPPES; status is on the state search - Practice location
- 325 Briarwood Circle, Ann Arbor, MI 48108
- Phone
- (734) 647-9000
- Enumerated
- Oct 26, 2006
- Record last updated
- Feb 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 2605500 MI
- Medicare enrollment
- Enrolled (PECOS I20100520000963); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1976
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 860 in Michigan → Look up another NPI →
Also registered at 325 Briarwood Circle
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bach, MDCardiovascular Disease Physician1801972914
- Sushant Govindan, MDPulmonary Disease Physician1538470117
- Howard Markel, MDPediatrics Physician1366458531
- Colleen Podd, O.D.Optometrist1942666474
- Daniel Schneider, MDPulmonary Disease Physician1215220140
- Rachel Zemans, MDPulmonary Disease Physician1912053505
Verify William F. Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301055513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,422 Medicare Part D claims for 245 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Eliquis176 claims
- Atorvastatin Calcium142 claims
- Metoprolol Succinate130 claims
- Lisinopril91 claims
- Metoprolol Tartrate84 claims
- Furosemide65 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 MichiganCanton, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William F. Armstrong among 860 cardiovascular disease physician records in Michigan
William F. Armstrong, MD is one of 860 cardiovascular disease physician records with a practice address in Michigan. 84% 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 20% of them.
- NPI issued2006 · 20% of these records are older, 44% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1976 · median 1999 among the 606 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Michigan
There are 860 cardiovascular disease physician records in Michigan.
All 860 in Michigan → Every provider in Ann Arbor → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- David Bach, MDAnn Arbor, MI 481081801972914
- Santhi Ganesh, M.D.Ann Arbor, MI 481081427377753
- Scott Ketcham, MDAnn Arbor, MI 481081407340847
- Christopher Scoma, MDAnn Arbor, MI 481081831551415
- Aman Chugh, MDAnn Arbor, MI 481091750466793
- Monica Colvin, M.D.Ann Arbor, MI 481091457388431
- Sunil Das, MDAnn Arbor, MI 481091366527319
- Hitinder Gurm, MDAnn Arbor, MI 481091841376597
Common questions
What is William F. Armstrong, MD's NPI number?
William F. Armstrong, MD's National Provider Identifier (NPI) is 1487739553, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William F. Armstrong, MD located?
The NPPES record lists a practice address at 325 Briarwood Circle, Ann Arbor, MI, 48108. Phone: (734) 647-9000. Providers update this record themselves, so call before visiting.
How can I verify William F. Armstrong, MD's license?
NPPES lists Michigan license number 4301055513, 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 William F. Armstrong, MD prescribe under Medicare Part D?
In 2024, William F. Armstrong, MD had 1,422 Medicare Part D claims for 245 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.