NPPES file of Aug 9, 2026

William Roger Masch, M.D.

Diagnostic Radiology Physician · Ypsilanti, MI

William Roger Masch, M.D. is a diagnostic radiology physician with a practice address in Ypsilanti, Michigan, and NPI 1366767303, issued on Apr 1, 2010. Check the license (Michigan 4301096675, 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
1366767303
Name
William Roger Masch
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
4301096675 MI
V4047 TX
Self-reported in NPPES; status is on the state search
Practice location
5333 Mcauley Dr, Ypsilanti, MI 48197
Phone
(734) 712-8350
Enumerated
Apr 1, 2010
Record last updated
Sep 18, 2025
Fax
(734) 712-8351
Medicare enrollment
Enrolled (PECOS I20251002004552); accepts Medicare assignment
Medical or professional school
Boston University School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest diagnostic radiology physician records → All 1,584 in Michigan → Look up another NPI →

Also registered at 5333 Mcauley Dr

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

  1. Alaa Abu-Mahfouz, MDPhysical Medicine & Rehabilitation Physician1821738642
  2. Ola Al Sous, M.D.Internal Medicine Physician1689985178
  3. Mary Alcini, PTPhysical Therapist1225250327
  4. Anastasios Alexiou, MDNeurology Physician1497707939
  5. Suma Amarnath, M.D.Endocrinology, Diabetes & Metabolism Physician1104001841
  6. Robert Arnold, M.D.Diagnostic Radiology Physician1801097761

Verify William Roger Masch 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 4301096675    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.

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William Roger Masch among 1,584 diagnostic radiology physician records in Michigan

William Roger Masch, M.D. is one of 1,584 diagnostic radiology physician records with a practice address in Michigan. 70% 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 2010, is newer than 68% of them.

  • NPI issued2010 · 68% of these records are older, 29% newer
  • In a Medicare fileNo · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2010 · median 2003 among the 1,007 with a school on file
  • Record last updated2025 · 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 2085R0202X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

43 diagnostic radiology physician records list a practice address in Ypsilanti

They are 43 of the 3,625 NPPES records with a practice address in Ypsilanti, and 1,584 diagnostic radiology physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,584 in Michigan → Every provider in Ypsilanti → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Gary Augustyn, M.D.Ypsilanti, MI 481971932151701
  2. David Baker, M.D.Ypsilanti, MI 481971740232511
  3. Mark Baumeier, D.O.Ypsilanti, MI 481971467404236
  4. Gil Borlaza, M.D.Ypsilanti, MI 481971013968056
  5. Stephanie Falbo, MDYpsilanti, MI 481971992760953
  6. Karen Haddlesey, MDYpsilanti, MI 481971851356976
  7. Lynn Joynt, M.D.Ypsilanti, MI 481971548211261
  8. Michael Kasotakis, M.D.Ypsilanti, MI 481971578514410

Common questions

What is William Roger Masch, M.D.'s NPI number?

William Roger Masch, M.D.'s National Provider Identifier (NPI) is 1366767303, issued on Apr 1, 2010. An NPI identifies a provider in billing; it is not a license.

Where is William Roger Masch, M.D. located?

The NPPES record lists a practice address at 5333 Mcauley Dr, Ypsilanti, MI, 48197. Phone: (734) 712-8350. Providers update this record themselves, so call before visiting.

How can I verify William Roger Masch, M.D.'s license?

NPPES lists Michigan license number 4301096675, 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.