Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan R Thompson, REGISTERED DIETITIAN

Nutritionist in Oakland, CA · enumerated 2007.

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

National Provider Identifier

1174646947

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Joan R Thompson

Credential REGISTERED DIETITIAN

Sex Female

Practice address 3451 E 12th Street, Oakland, CA, 94601

Phone (510) 535-3700

Fax (510) 535-4216

Enumeration date Apr 9, 2007

Last updated in NPPES Dec 19, 2007

Taxonomy & licenses

133N00000X Nutritionist Dietary & Nutritional Service Providers · License 814574 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
HAP71021F	Other	CA	FPACT
55-1975	Other	CA	FQHC MEDICARE PART A
ZZZ29799Z	Other	CA	FQHC MEDICARE PART B
FHC71021F	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Joan Thompson?

Joan Thompson is registered in NPPES with the primary taxonomy of Nutritionist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-19.