Gregor Medical Corporation
NPI 1275274003 · Multi-Specialty Clinic/Center · Rancho Cucamonga, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregor Medical Corporation is a Multi-Specialty Clinic/Center organization in Rancho Cucamonga, CA (NPI 1275274003).
Provider details
- NPI number
- 1275274003
- Entity type
- Organization
- Primary specialty
- Multi-Specialty Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Peter Gregor, President/Ceo(909) 906-1505
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- Gregor Medical Corporation
Registry dates
- Enumerated
- 2022-04-05
- Last updated
- 2024-10-09
- Certified
- 2024-10-09
Frequently asked questions
- What is Gregor Medical Corporation's NPI number?
- Gregor Medical Corporation's National Provider Identifier (NPI) is 1275274003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gregor Medical Corporation?
- Gregor Medical Corporation is classified in the NPPES registry as Multi-Specialty Clinic/Center (Ambulatory Health Care Facilities).
- Where is Gregor Medical Corporation located?
- Gregor Medical Corporation's practice location on file with NPPES is 9377 Haven Ave Ste 100, Rancho Cucamonga, CA 91730-5340.
- What is Gregor Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Gregor Medical Corporation is (909) 906-1505.
- Does Gregor Medical Corporation accept Medicare?
- Gregor 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 Gregor Medical Corporation?
- The authorized official listed on Gregor Medical Corporation's NPPES record is Peter Gregor, President/Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gregor Medical Corporation's NPI active?
- Yes — Gregor Medical Corporation's NPI (1275274003) is active in the NPPES registry as of the last update on 2024-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.