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Dr. Walter M Marcus, MD

Gynecology Physician in Riverside, CA · enumerated 2006.

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

National Provider Identifier

1013014612

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Registry record

Entity type Individual (Type 1)
Name Dr. Walter M Marcus
Credential MD
Sex Male
Practice address 8945 Magnolia Ave, #202, Riverside, CA, 92503
Phone (951) 687-8945
Fax (951) 687-1042
Enumeration date Sep 19, 2006
Last updated in NPPES Feb 4, 2014

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License G37441 (CA) 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
00G377410 Medicaid CA -

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.

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Frequently asked questions

What is the NPI number for Walter Marcus?
The National Provider Identifier (NPI) for Walter Marcus is 1013014612, a Type 1 (individual) record in the CMS NPPES registry.
Where does Walter Marcus practice?
The practice location on file with NPPES is in Riverside, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-04.