Family Medical Clinics of California, Inc
NPI 1891123253 · Family Medicine Physician · Ontario, CA
Family Medical Clinics of California, Inc is a Family Medicine Physician organization in Ontario, CA (NPI 1891123253).
Provider details
- NPI number
- 1891123253
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- George Youssef, Medical Director(909) 984-5808
- License
- A42255 (CA)
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
12 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
- 2013-10-23
- Last updated
- 2013-10-23
Frequently asked questions
- What is Family Medical Clinics of California, Inc's NPI number?
- Family Medical Clinics of California, Inc's National Provider Identifier (NPI) is 1891123253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Family Medical Clinics of California, Inc?
- Family Medical Clinics of California, Inc is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Family Medical Clinics of California, Inc located?
- Family Medical Clinics of California, Inc's practice location on file with NPPES is 1520 N Mountain Ave, Ontario, CA 91762-1128.
- What is Family Medical Clinics of California, Inc's phone number?
- The practice phone number listed in the NPPES registry for Family Medical Clinics of California, Inc is (909) 984-5808.
- Who is the authorized official for Family Medical Clinics of California, Inc?
- The authorized official listed on Family Medical Clinics of California, Inc's NPPES record is George Youssef, Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Family Medical Clinics of California, Inc's NPI active?
- Yes — Family Medical Clinics of California, Inc's NPI (1891123253) is active in the NPPES registry as of the last update on 2013-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.