Premier Medical Group of California
NPI 1629523014 · Internal Medicine Physician · Upland, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Premier Medical Group of California is a Internal Medicine Physician organization in Upland, CA (NPI 1629523014).
Provider details
- NPI number
- 1629523014
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ythanh Nguyen, Partner(619) 993-0189
- License
- 546306 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2016-08-16
- Last updated
- 2021-06-24
- Certified
- 2021-06-24
Frequently asked questions
- What is Premier Medical Group of California's NPI number?
- Premier Medical Group of California's National Provider Identifier (NPI) is 1629523014, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Premier Medical Group of California?
- Premier Medical Group of California is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Premier Medical Group of California located?
- Premier Medical Group of California's practice location on file with NPPES is 901 San Bernardino Rd, Upland, CA 91786-4912.
- What is Premier Medical Group of California's phone number?
- The practice phone number listed in the NPPES registry for Premier Medical Group of California is (562) 236-3432.
- Does Premier Medical Group of California accept Medicare?
- Premier Medical Group of California is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Premier Medical Group of California?
- The authorized official listed on Premier Medical Group of California's NPPES record is Ythanh Nguyen, Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Premier Medical Group of California's NPI active?
- Yes — Premier Medical Group of California's NPI (1629523014) is active in the NPPES registry as of the last update on 2021-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.