Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joseph M Masternick, DO

Family Medicine Physician in Clawson, MI · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1548240237

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Registry record

Entity type Individual (Type 1)

Name Dr. Joseph M Masternick

Credential DO

Sex Male

Practice address 909 W Maple Rd, Ste 100, Clawson, MI, 48017

Phone (248) 435-2028

Fax (248) 435-2099

Enumeration date Jan 19, 2006

Last updated in NPPES Nov 27, 2018

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101006910 (MI) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
080F319020	Other	-	BLUE CROSS BLUE SHIELD
1238667	Medicaid	MI	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Joseph Masternick practice?

The practice location on file with NPPES is in Clawson, MI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Joseph Masternick?

The National Provider Identifier (NPI) for Joseph Masternick is 1548240237, a Type 1 (individual) record in the CMS NPPES registry.

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Lawrence Freedman General Practice Dentistry · Clawson, MI NPI 1780666891 Stephen Boodin Neurological Surgery Physician · Clawson, MI NPI 1093799702 Ronald Rothenberg Family Medicine Physician · Clawson, MI NPI 1487634986 Agata Michalczak Family Medicine Physician · Clawson, MI NPI 1306810304 Signature Chiropractic PC Chiropractor · Clawson, MI NPI 1558323923 Michigan Pulmonayr & Sleep Physicians, PC Pulmonary Disease Physician · Clawson, MI NPI 1649224932 Shenandoah Clinic, P.C. Family Medicine Physician · Clawson, MI NPI 1043394877 Stephen Boodin MD PC Neurological Surgery Physician · Clawson, MI NPI 1174798953

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-27.