One Medical Group, Inc.
NPI 1801505813 · Family Medicine Physician · Brookfield, WI
One Medical Group, Inc. is a Family Medicine Physician organization in Brookfield, WI (NPI 1801505813).
Provider details
- NPI number
- 1801505813
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Andrew Diamond, Chief Medical Officer(415) 593-1455
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Internal Medicine Physician207R00000X
Allopathic & Osteopathic Physicians
- 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
3 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
- One Medical
Registry dates
- Enumerated
- 2022-11-17
- Last updated
- 2022-11-17
- Certified
- 2022-11-17
Frequently asked questions
- What is One Medical Group, Inc.'s NPI number?
- One Medical Group, Inc.'s National Provider Identifier (NPI) is 1801505813, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is One Medical Group, Inc.?
- One Medical Group, Inc. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is One Medical Group, Inc. located?
- One Medical Group, Inc.'s practice location on file with NPPES is 95 N Moorland Rd Ste E9, Brookfield, WI 53005-6021.
- What is One Medical Group, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for One Medical Group, Inc. is (888) 663-6331.
- Who is the authorized official for One Medical Group, Inc.?
- The authorized official listed on One Medical Group, Inc.'s NPPES record is Andrew Diamond, Chief Medical Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is One Medical Group, Inc.'s NPI active?
- Yes — One Medical Group, Inc.'s NPI (1801505813) is active in the NPPES registry as of the last update on 2022-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.