OrganizationActive
Regents of the University of Ca
NPI 1326031345 · Surgery Physician · Sacramento, CA
Regents of the University of Ca is a Surgery Physician organization in Sacramento, CA (NPI 1326031345).
Provider details
- NPI number
- 1326031345
- Entity type
- Organization
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Allan Siefkin, Cmo(916) 734-1166
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
2221 Stockton Blvd
Sacramento, CA 95817-1418
Phone: (916) 734-7313
Fax: (916) 734-2919
Street-level locationGet directions
Mailing address
4900 Broadway
Sacramento, CA 95820-1532
Other names (DBA / former)
- Other name
- Regents Ucdpbg Surgery
Registry dates
- Enumerated
- 2005-08-24
- Last updated
- 2011-05-16
Frequently asked questions
- What is Regents of the University of Ca's NPI number?
- Regents of the University of Ca's National Provider Identifier (NPI) is 1326031345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Regents of the University of Ca?
- Regents of the University of Ca is classified in the NPPES registry as Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Regents of the University of Ca located?
- Regents of the University of Ca's practice location on file with NPPES is 2221 Stockton Blvd, Sacramento, CA 95817-1418.
- What is Regents of the University of Ca's phone number?
- The practice phone number listed in the NPPES registry for Regents of the University of Ca is (916) 734-7313.
- Who is the authorized official for Regents of the University of Ca?
- The authorized official listed on Regents of the University of Ca's NPPES record is Allan Siefkin, Cmo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Regents of the University of Ca's NPI active?
- Yes — Regents of the University of Ca's NPI (1326031345) is active in the NPPES registry as of the last update on 2011-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.