NPIMap

Organization Active NPI

One Medical of Ny, P.C.

Doing business as One Medical Group

  • Family Medicine Physician
  • New York, NY
National Provider Identifier
1861709487
Registry record updated Oct 30, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
252388 Issued in NY
Legal business name
ONE MEDICAL OF NY, P.C.
Doing business as
One Medical Group
Practice address
489 5TH Ave FL 3
New York, NY 10017-6145
Phone
(415) 658-6791
Fax
(415) 520-0904
NPI assigned
Sep 2, 2010
Last updated
Oct 30, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 30, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Andrew S Diamond, MD
Title
President, Treasurer
Phone
(415) 689-3426

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 252388 NY Primary
Internal Medicine Physician 207R00000X 252388 NY
Pediatrics Physician 208000000X 252388 NY

Addresses

Primary practice location

489 5TH Ave FL 3
New York, NY 10017-6145

Mailing address

1 Embarcadero Ctr Ste 1900
San Francisco, CA 94111-3723
Phone (415) 658-6791

Other names 2

  • One Medical Group Doing business as
  • One Medical Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20110209000483 NY Part B Supplier - Clinic/Group Practice 3274713110 Receives reassigned benefits from 160 practitioners
Practice locations: Scarsdale, NY; New York, NY; Brooklyn, NY

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
33D1101616One Medical With Montefiore489 Fifth Ave - 3Rd Floor, New York, NY 10017Provider-performed microscopyMar 26, 2027

National Provider Directory

National Provider Directory

Locations

130 Sutter St
Fl 2
San Francisco, CA 94104
Phone (415) 529-4522

165 Smith St
Brooklyn, NY 11201
Phone (212) 441-4380

12 W 48th St
Fl 2
New York, NY 10036
Phone (212) 321-7004

185 Broadway
#2
New York, NY 10007
Phone 8886636331 ext. 86791

30 Broad St
Fl 45
New York, NY 10004
Phone (212) 530-0630

Practitioners & affiliated clinicians

Practitioners 178

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 178

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1283385600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1761782400000",
    "number": "1861709487",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723",
            "telephone_number": "415-658-6791",
            "fax_number": "415-520-0904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "489 5TH AVE FL 3",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100176145",
            "telephone_number": "415-658-6791",
            "fax_number": "415-520-0904"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ONE MEDICAL OF NY, P.C.",
        "organizational_subpart": "NO",
        "enumeration_date": "2010-09-02",
        "last_updated": "2025-10-30",
        "certification_date": "2025-10-30",
        "status": "A",
        "authorized_official_last_name": "DIAMOND",
        "authorized_official_first_name": "ANDREW",
        "authorized_official_middle_name": "S",
        "authorized_official_title_or_position": "PRESIDENT, TREASURER",
        "authorized_official_telephone_number": "415-689-3426",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NY",
            "license": "252388",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "252388",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "252388",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "One Medical Group",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "One Medical",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in New York, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 30, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.