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Regents of the University of Ca

Radiation Oncology Physician in Sacramento, CA · enumerated 2005 · authorized official Tammy Trovatten, Vice President, Gov'T Reimbursement.

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

National Provider Identifier

1235122250

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Registry record

Entity type Organization (Type 2)
Legal business name Regents of the University of Ca
Other name <Unavail>
Practice address 4501 X St, Sacramento, CA, 95817
Fax (916) 454-4614
Enumeration date Aug 24, 2005
Last updated in NPPES May 16, 2025

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Tammy Trovatten
Title Vice President, Gov'T Reimbursement

Other identifiers

Identifier Type State Issuer
CI4127 Other CA RAILROAD MEDICARE PIN
CR0028 Other CA RAILROAD MEDICARE PIN
DE7275 Other CA RAILROAD MEDICARE PIN
GR0070430 Medicaid CA -
CN4400 Other CA RAILROAD MEDICARE PIN
GNP000070 Medicaid CA -
CN4844 Other CA RAILROAD MEDICARE PIN
DA4168 Other CA RAILROAD MEDICARE PIN

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

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Regents of the University of Ca?
Regents of the University of Ca is registered in NPPES as a Radiation Oncology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-16.