NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Susan Longar, M.D.

Ophthalmology Physician in Daly City, CA · enumerated 2006.

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

National Provider Identifier

1578506960

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Susan Longar
Credential M.D.
Sex Female
Practice address 1850 Sullivan Ave, Ste 500, Daly City, CA, 94015
Phone (650) 992-9221
Enumeration date Jun 13, 2006
Last updated in NPPES Feb 8, 2008

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G751390 (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
180040517 Other CA MEDICARE RAILROAD
4337450001 Other CA NORIDAN

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

What is the NPI number for Susan Longar?
The National Provider Identifier (NPI) for Susan Longar is 1578506960, a Type 1 (individual) record in the CMS NPPES registry.
Where does Susan Longar practice?
The practice location on file with NPPES is in Daly City, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-08.