Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph E Sullivan, M.D.

Neurology with Special Qualifications in Child Neurology Physician in San Francisco, CA · enumerated 2006.

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

National Provider Identifier

1952321135

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Registry record

Entity type Individual (Type 1)

Name Joseph E Sullivan

Credential M.D.

Sex Male

Practice address 400 Parnassus Ave Fl 8, Box 0348, San Francisco, CA, 94143

Phone (415) 353-2437

Fax (415) 353-2837

Enumeration date Jul 20, 2006

Last updated in NPPES Nov 26, 2007

Taxonomy & licenses

2084N0402X Neurology with Special Qualifications in Child Neurology Physician Allopathic & Osteopathic Physicians · License A99923 (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
0006963	Medicaid	NJ	-
001965161	Medicaid	PA	-

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 Sullivan practice?

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

What is the NPI number for Joseph Sullivan?

The National Provider Identifier (NPI) for Joseph Sullivan is 1952321135, 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 2007-11-26.