Official registry information on file with the National Plan and Provider Enumeration System.
ONE MEDICAL GROUP, INC. (NPI 1023899978) is a healthcare organization registered as a family medicine in Seattle, Washington and active in the NPI registry since October 2023. The organization holds 115 active CLIA laboratory certificates, maintains 7 additional practice locations, and lists Andrew S Diamond, Chief Medical Officer, as its authorized official.
NPPES Registry Identity
NPI1023899978
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameONE MEDICAL GROUP, INC.
Location Address1600 7TH AVE STE 110Seattle, WA 98101-2288
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP
Medicare Participation & PECOS CMS
Medicare enrollment 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).
Clinicians Billing Medicare Through This Organization
37
Medicare enrollment records show 37 clinicians reassign Medicare billing to One Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 7 practice at this address and 32 within 10 miles. Listed here are the 20 practicing nearest to this location.
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA115
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Laboratory LocationOne Medical Group Inc2410 California St, San Francisco, CA 94115
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2068061
Laboratory LocationOne Medical Group98 Gough Street, San Francisco, CA 94102
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2078494
One Medical Group - Inner Sunset · San Francisco, CA
Laboratory LocationOne Medical Group - Inner Sunset840 Irving St, San Francisco, CA 94122
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2093651
Laboratory LocationOne Medical Group3490 California St Ste 203, San Francisco, CA 94118
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·36D2262566
Laboratory LocationOne Medical5771 N Hamilton Road - Commerical, New Albany, OH 43054
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·03D2261789
Laboratory LocationOne Medical1744 S Val Vista Dr Ste 5-108, 5-110-Commercial, Mesa, AZ 85204
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·45D2261837
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·45D2258175
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·07D2300615
Laboratory LocationOne Medical20 Elm Street-Commercial, Westport, CT 06880
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D1102451
Laboratory LocationOne Medical Group559 Clay St, San Francisco, CA 94111
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D1081409
Laboratory LocationOne Medical Group110 Sutter St, 6th Fl, San Francisco, CA 94104
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2042783
Laboratory LocationOne Medical Group329 Primrose Rd Fl 2nd, Burlingame, CA 94010
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2044220
Laboratory LocationOne Medical Group Inc.590 Forest Ave, Palo Alto, CA 94301
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2053218
Laboratory LocationOne Medical Group4 Embarcadero Center, Lobby Level, San Francisco, CA 94111
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2093514
Laboratory LocationOne Medical Group900 Veterans Blvd Ste 150, Redwood City, CA 94063
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2048679
Laboratory LocationOne Medical Group3885 24th St., San Francisco, CA 94114
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2102470
Laboratory LocationOne Medical Group580 Valencia St, San Francisco, CA 94110
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2247921
Laboratory LocationOne Medical Group, Inc1955 Broadway, Suite A, Oakland, CA 94612
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Laboratory LocationOne Medical Group2950 S Delaware Street, Suite 150, San Mateo, CA 94403
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·34D2292220
Laboratory LocationOne Medical515 Dr. Calvin Jones Hwy, Ste 110 - Commercial, Wake Forest, NC 27587
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Laboratory LocationOne Medical20734 E Maya Rd Ste 101-Commercial, Queen Creek, AZ 85142
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·03D2288985
Laboratory LocationOne Medical222 S Mill Ave Ste 1230-Commercial, Tempe, AZ 85281
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2135721
One Medical Group - Cow Hollow · San Francisco, CA
Laboratory LocationOne Medical Group - Cow Hollow1823 Union St, San Francisco, CA 94123
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·34D2231322
Laboratory LocationOne Medical905 Main St B101, Durham, NC 27701
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·36D2231347
Laboratory LocationOne Medical3870 Townsfair Way - Commerical, Columbus, OH 43219
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·36D2231348
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·38D2231123
Laboratory LocationOne Medical2865 SW Cedar Hills Blvd, Beaverton, OR 97005
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2169094
Laboratory LocationOne Medical2337 Oak Grove Road, Walnut Creek, CA 94598
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·34D2229626
Laboratory LocationOne Medical200 Park At North Hills Street Suite 100, Raleigh, NC 27609
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·45D2284841
Laboratory LocationOne Medical5717 Legacy Dr Ste 180 - Commercial, Plano, TX 75024
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2126319
Laboratory LocationOne Medical Group1333 Powell St Ste 103, Emeryville, CA 94608
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·07D2277225
Laboratory LocationOne Medical22 Pine St - Commercial, New Canaan, CT 06840
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·07D2277228
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2125874
One Medical Group - San Jose North First · San Jose, CA
Laboratory LocationOne Medical Group - San Jose North First2150 N 1st St Ste 250, San Jose, CA 95131
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2276363
Laboratory LocationOne Medical2145 University Ave, Berkeley, CA 94704
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2016081
Laboratory LocationOne Medical Group201 Spear Street Ste 230, San Francisco, CA 94105
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·22D2209170
Laboratory LocationOne Medical300 Needham St, Suite 1B Commercial, Newton, MA 02459
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Laboratory LocationOne Medical2974 W 7th St - Commercial, Fort Worth, TX 76107
CLIA data matches this NPI record on: ✓ Name✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Laboratory LocationOne Medical Northgate13271 Bass Pro Drive, Suite 140, Colorado Springs, CO 80921
CLIA data matches this NPI record on: ✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2039179
Laboratory LocationOne Medical - Castro2355 Market St, San Francisco, CA 94114
CLIA data matches this NPI record on: ✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·30D2034938
Laboratory LocationOne Medical At Dartmouth7 Allen St, Ste 100, Hanover, NH 03755
CLIA data matches this NPI record on: ✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) ·05D2105332
Laboratory LocationOne Medical -Space X3615 Jack Northrop Ave Ste 100, Hawthorne, CA 90250
CLIA data matches this NPI record on: ✓ Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
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 1023899978. It was assigned to this organization in the NPPES registry on October 6, 2023.
Where is One Medical Group, Inc. located?
One Medical Group, Inc. is located at 1600 7th Ave Ste 110, Seattle, WA 98101. The listed phone number is (888) 663-6331.
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.
How many clinicians bill Medicare through One Medical Group, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 37 clinicians in 8 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 Nurse Practitioner (14), Family Practice (12) and Clinical Psychologist (3). Of these, 7 practice at this address and 32 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does One Medical Group, Inc. hold CLIA laboratory certificates?
Yes. 115 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
When was this NPI record last updated?
The NPPES record for One Medical Group, Inc. was last updated on October 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 1023899978
Family Medicine organization in Seattle, Washington. Organization record, active in the CMS NPPES registry since October 6, 2023.
## Identity
- **NPI:** 1023899978 (Entity type: Organization)
- **Enumerated:** October 6, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Organization subpart:** No
- **Authorized official:** Andrew Diamond, CHIEF MEDICAL OFFICER
## Practice location
- **Address:** 1600 7TH AVE STE 110, Seattle, WA 98101-2288
- **Phone:** (888) 663-6331 · **Fax:** (206) 267-4391
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 37 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (14), Family Practice (12), Clinical Psychologist (3); 7 practice at this address and 32 within 10 miles; [full list](https://npiprofile.com/npi/1023899978/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2023
- **CLIA laboratory certificates:** 115 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1023899978) · Data from the CMS NPPES public registry.
# One Medical Group, Inc. · NPI 1023899978
Family Medicine organization in Seattle, Washington. Organization record, active in the CMS NPPES registry since October 6, 2023.
## Identity
- **NPI:** 1023899978 (Entity type: Organization)
- **Enumerated:** October 6, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Organization subpart:** No
- **Authorized official:** Andrew Diamond, CHIEF MEDICAL OFFICER
## Practice location
- **Address:** 1600 7TH AVE STE 110, Seattle, WA 98101-2288
- **Phone:** (888) 663-6331 · **Fax:** (206) 267-4391
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 37 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (14), Family Practice (12), Clinical Psychologist (3); 7 practice at this address and 32 within 10 miles; [full list](https://npiprofile.com/npi/1023899978/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2023
- **CLIA laboratory certificates:** 115 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1023899978) · Data from the CMS NPPES public registry.