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Dr. Marc Segall, M.D.

Ophthalmology Physician in Downey, CA · enumerated 2006.

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

National Provider Identifier

1326151531

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Registry record

Entity type Individual (Type 1)
Name Dr. Marc Segall
Credential M.D.
Sex Male
Practice address 11411 Brookshire Ave, Downey, CA, 90241
Phone (562) 862-7347
Fax (562) 862-4178
Enumeration date Aug 15, 2006
Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G23733 (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
180043649 Other CA RAILROAD MEDICARE
00G237330 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

Where does Marc Segall practice?
The practice location on file with NPPES is in Downey, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marc Segall?
The National Provider Identifier (NPI) for Marc Segall is 1326151531, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.