One Medical Group, P.C.
NPI 1962798645 · Internal Medicine Physician · Washington, DC
One Medical Group, P.C. is a Internal Medicine Physician organization in Washington, DC (NPI 1962798645).
Provider details
- NPI number
- 1962798645
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Andrew Diamond, President(415) 658-6791
- License
- MD039185 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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 Group
- Doing business as
- One Medical Group
Registry dates
- Enumerated
- 2011-06-22
- Last updated
- 2020-12-14
- Certified
- 2020-12-14
Frequently asked questions
- What is One Medical Group, P.C.'s NPI number?
- One Medical Group, P.C.'s National Provider Identifier (NPI) is 1962798645, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is One Medical Group, P.C.?
- One Medical Group, P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is One Medical Group, P.C. located?
- One Medical Group, P.C.'s practice location on file with NPPES is 1627 Eye St Nw, Washington, DC 20006-4007.
- What is One Medical Group, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for One Medical Group, P.C. is (202) 660-0015.
- Who is the authorized official for One Medical Group, P.C.?
- The authorized official listed on One Medical Group, P.C.'s NPPES record is Andrew Diamond, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is One Medical Group, P.C.'s NPI active?
- Yes — One Medical Group, P.C.'s NPI (1962798645) is active in the NPPES registry as of the last update on 2020-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.