ONE MEDICAL GROUP, INC
NPI 1801666904
Family Medicine in San Diego, CA
About One Medical Group, Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ONE MEDICAL GROUP, INC (NPI 1801666904), doing business as One Medical, is a healthcare organization registered as a family medicine in San Diego, California and active in the NPI registry since January 2024. The organization maintains 2 additional practice locations and lists Andrew S Diamond, Chief Medical Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Locations 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
One Medical Group, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by November 30, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
291Medicare enrollment records show 291 clinicians reassign Medicare billing to One Medical Group, Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 5 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 10
Nearest to this location (20)
See all 291San Diego, CA 92115
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is One Medical Group, Inc's NPI number?
The NPI number for One Medical Group, Inc is 1801666904. It was assigned to this organization in the NPPES registry on January 9, 2024. The provider is doing business as One Medical.
Where is One Medical Group, Inc located?
One Medical Group, Inc is located at 1230 Columbia St Ste 100, San Diego, CA 92101. The listed phone number is (619) 232-3500.
What is One Medical Group, Inc's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is One Medical Group, Inc enrolled in Medicare?
Yes. One Medical Group, Inc is registered in the Medicare PECOS enrollment system.
When is One Medical Group, Inc's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through One Medical Group, Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 291 clinicians in 10 Medicare specialties reassign their Medicare billing to One Medical Group, Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Family Practice (104), Nurse Practitioner (99) and Internal Medicine (42). Of these, 2 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for One Medical Group, Inc was last updated on January 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# One Medical Group, Inc · NPI 1801666904
Family Medicine organization in San Diego, California. Organization record, active in the CMS NPPES registry since January 9, 2024.
## Identity
- **NPI:** 1801666904 (Entity type: Organization)
- **Enumerated:** January 9, 2024
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Also known as:** One Medical (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Andrew Diamond, CHIEF MEDICAL OFFICER
## Practice location
- **Address:** 1230 COLUMBIA ST STE 100, San Diego, CA 92101-8502
- **Phone:** (619) 232-3500 · **Fax:** (415) 252-7176
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** November 30, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 291 clinicians in 10 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (104), Nurse Practitioner (99), Internal Medicine (42); 2 practice at this address and 5 within 10 miles; [full list](https://npiprofile.com/npi/1801666904/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 9, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1801666904) · Data from the CMS NPPES public registry.