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Tammy Sims, M. D.

Specialist in Riverside, CA · enumerated 2007 · practices at Regents of the University of California.

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

National Provider Identifier

1043490246

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Registry record

Entity type Individual (Type 1)
Name Tammy Sims
Credential M. D.
Sex Female
Practice address 3390 University Ave Ste 100, Riverside, CA, 92501
Phone (844) 827-8000
Enumeration date Nov 6, 2007
Last updated in NPPES Dec 30, 2024

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 16949 (MS) 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
04583552 Medicaid MS -

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 Tammy Sims?
The National Provider Identifier (NPI) for Tammy Sims is 1043490246, a Type 1 (individual) record in the CMS NPPES registry.
Where does Tammy Sims 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 2024-12-30.