Sierra San Antonio Medical Corporation
NPI 1790711562 · Family Medicine Physician · Fontana, CA
Sierra San Antonio Medical Corporation is a Family Medicine Physician organization in Fontana, CA (NPI 1790711562).
Provider details
- NPI number
- 1790711562
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Olivia Bajor, Vice President(909) 434-1150
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Mailing address
Other names (DBA / former)
- Doing business as
- Sierra San Antonio Urgent Care
Registry dates
- Enumerated
- 2006-06-24
- Last updated
- 2008-05-21
Frequently asked questions
- What is Sierra San Antonio Medical Corporation's NPI number?
- Sierra San Antonio Medical Corporation's National Provider Identifier (NPI) is 1790711562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sierra San Antonio Medical Corporation?
- Sierra San Antonio Medical Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sierra San Antonio Medical Corporation located?
- Sierra San Antonio Medical Corporation's practice location on file with NPPES is 16465 Sierra Lakes Parkway, Fontana, CA 92336.
- What is Sierra San Antonio Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Sierra San Antonio Medical Corporation is (909) 434-1150.
- Who is the authorized official for Sierra San Antonio Medical Corporation?
- The authorized official listed on Sierra San Antonio Medical Corporation's NPPES record is Olivia Bajor, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sierra San Antonio Medical Corporation's NPI active?
- Yes — Sierra San Antonio Medical Corporation's NPI (1790711562) is active in the NPPES registry as of the last update on 2008-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.