NPPES file of Aug 9, 2026

William Charles Trowbridge, M.D.

General Practice Physician · Mason, MI

William Charles Trowbridge, M.D. is a general practice physician with a practice address in Mason, Michigan, and NPI 1972603041, issued on Sep 25, 2006. Check the license (Michigan 4301030171, as entered in NPPES) on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1972603041
Name
William Charles Trowbridge
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License number
4301030171 MI
Self-reported in NPPES; status is on the state search
Practice location
790 E Columbia St, Mason, MI 48854
Phone
(616) 891-1169
Enumerated
Sep 25, 2006
Record last updated
May 4, 2010 (not updated in 16 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest general practice physician records → All 369 in Michigan → Look up another NPI →

Also registered at 790 E Columbia St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mary Boudreau, NP (AGPCNP-BC)Primary Care Nurse Practitioner1730523598
  2. Sarah Hutcheson, MA LLPCProfessional Counselor1306247374
  3. Tara Jock, PAPhysician Assistant1912256975
  4. Mary Meerschaert, M.D.Internal Medicine Physician1013116672
  5. Corinne Stanton, MSW ACSWSocial Worker1730289422

Verify William Charles Trowbridge in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301030171    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

William Charles Trowbridge among 369 general practice physician records in Michigan

William Charles Trowbridge, M.D. is one of 369 general practice physician records with a practice address in Michigan. 49% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 64% newer
  • In a Medicare fileNo · 49% of these records are
  • In the CMS Doctors and Clinicians fileNo · 27% of these records are
  • Record last updated2010 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Physician providers in Michigan

There are 369 general practice physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 369 in Michigan → Every provider in Mason → General Practice Physician nationwide →

The 8 general practice physician records with the nearest ZIP codes

  1. Har Swarup, MDLakeview, MI 488501336114727
  2. Penalope Cook, D.O.Mt Pleasant, MI 488591487612685
  3. Brian Swanton, MDLake Odessa, MI 488491972612547
  4. Sarah Yonder, M.D.Mt Pleasant, MI 488591730102682
  5. Susan Clarkson, M.D.Laingsburg, MI 488481922336288
  6. Teresa Wertheimer, MDOkemos, MI 488641811223498
  7. John Hannah, M.DOwosso, MI 488671447542634
  8. Barry Laughlin, MDHaslett, MI 488401003929845

Common questions

What is William Charles Trowbridge, M.D.'s NPI number?

William Charles Trowbridge, M.D.'s National Provider Identifier (NPI) is 1972603041, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Charles Trowbridge, M.D. located?

The NPPES record lists a practice address at 790 E Columbia St, Mason, MI, 48854. Phone: (616) 891-1169. Providers update this record themselves, so call before visiting.

How can I verify William Charles Trowbridge, M.D.'s license?

NPPES lists Michigan license number 4301030171, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.