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One Medical Group, Inc.

Family Medicine Physician in Seattle, WA · enumerated 2017 · authorized official Andrew Diamond, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1144742834

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Registry record

Entity type Organization (Type 2)
Legal business name One Medical Group, Inc.
Other name <Unavail>
Parent organization One Medical Group, Inc.
Practice address 601 N 34th St, Seattle, WA, 98103
Phone (206) 315-1421
Fax (206) 315-1422
Enumeration date Jul 13, 2017
Last updated in NPPES Jul 13, 2023

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Andrew Diamond
Title President
Phone (415) 658-6791

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for One Medical Group, Inc.?
The NPI for One Medical Group, Inc. is 1144742834, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for One Medical Group, Inc.?
NPPES lists Andrew Diamond (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-13.