Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Marc J Greenberger, M.D.

Pulmonary Disease Physician in Royal Oak, MI · enumerated 2006.

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

National Provider Identifier

1831145747

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Registry record

Entity type Individual (Type 1)

Name Marc J Greenberger

Credential M.D.

Sex Male

Practice address Royal Oak, MI, 48073

Phone (248) 548-2114

Fax (248) 548-2135

Enumeration date May 25, 2006

Last updated in NPPES Sep 12, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 4301062321 (MI) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 430162321 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
325572910	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 Marc Greenberger practice?

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

What is the NPI number for Marc Greenberger?

The National Provider Identifier (NPI) for Marc Greenberger is 1831145747, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Daniel Rontal Otolaryngology Physician · Royal Oak, MI NPI 1831152610 Michael Rontal Otolaryngology Physician · Royal Oak, MI NPI 1184688483 Marc Dunn Pulmonary Disease Physician · Royal Oak, MI NPI 1427002484 David Wu Pulmonary Disease Physician · Royal Oak, MI NPI 1740236652 Matthew Rontal Otolaryngology Physician · Royal Oak, MI NPI 1114946704 Oakland Medical Services, P.C. Otolaryngology Physician · Royal Oak, MI NPI 1114028263 Warren Fields Pulmonary Disease Physician · Royal Oak, MI NPI 1225158694 Franchesta Wilson Professional Counselor · Royal Oak, MI NPI 1730486713

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-12.