Ruben Ruiz M D a Medical Corporation
NPI 1043241821 · Primary Care Clinic/Center · Ontario, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruben Ruiz M D a Medical Corporation is a Primary Care Clinic/Center organization in Ontario, CA (NPI 1043241821).
Provider details
- NPI number
- 1043241821
- Entity type
- Organization
- Primary specialty
- Primary Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Ruben Ruiz, Ceo/President(562) 201-2508
- License
- G52245 (CA)
Specialties & taxonomies
Ambulatory Health Care Facilities
Other Service Providers
- Pediatrics Physician208000000X
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
- Ontario Clinica Medica Familiar
- Doing business as
- Ontario Clinica Medica Familiar
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2023-05-25
- Certified
- 2023-05-25
Frequently asked questions
- What is Ruben Ruiz M D a Medical Corporation's NPI number?
- Ruben Ruiz M D a Medical Corporation's National Provider Identifier (NPI) is 1043241821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ruben Ruiz M D a Medical Corporation?
- Ruben Ruiz M D a Medical Corporation is classified in the NPPES registry as Primary Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is Ruben Ruiz M D a Medical Corporation located?
- Ruben Ruiz M D a Medical Corporation's practice location on file with NPPES is 403 W F St, Ontario, CA 91762-3207.
- What is Ruben Ruiz M D a Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Ruben Ruiz M D a Medical Corporation is (909) 988-3288.
- Does Ruben Ruiz M D a Medical Corporation accept Medicare?
- Ruben Ruiz M D a Medical Corporation 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 Ruben Ruiz M D a Medical Corporation?
- The authorized official listed on Ruben Ruiz M D a Medical Corporation's NPPES record is Ruben Ruiz, Ceo/President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ruben Ruiz M D a Medical Corporation's NPI active?
- Yes — Ruben Ruiz M D a Medical Corporation's NPI (1043241821) is active in the NPPES registry as of the last update on 2023-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.