Premier Hospitalist Group of California
NPI 1487886412 · Hospitalist Physician · Upland, CA
Premier Hospitalist Group of California is a Hospitalist Physician organization in Upland, CA (NPI 1487886412).
Provider details
- NPI number
- 1487886412
- Entity type
- Organization
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ythanh Nguyen, President(562) 236-3432
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
16 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
Registry dates
- Enumerated
- 2009-08-08
- Last updated
- 2009-08-08
Frequently asked questions
- What is Premier Hospitalist Group of California's NPI number?
- Premier Hospitalist Group of California's National Provider Identifier (NPI) is 1487886412, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Premier Hospitalist Group of California?
- Premier Hospitalist Group of California is classified in the NPPES registry as Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Premier Hospitalist Group of California located?
- Premier Hospitalist Group of California's practice location on file with NPPES is 999 San Bernardino Rd, Upland, CA 91786-4920.
- What is Premier Hospitalist Group of California's phone number?
- The practice phone number listed in the NPPES registry for Premier Hospitalist Group of California is (562) 236-3432.
- Who is the authorized official for Premier Hospitalist Group of California?
- The authorized official listed on Premier Hospitalist Group of California's NPPES record is Ythanh Nguyen, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Premier Hospitalist Group of California's NPI active?
- Yes — Premier Hospitalist Group of California's NPI (1487886412) is active in the NPPES registry as of the last update on 2009-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.