One Medical Seniors Group, Inc.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

Legal business name

ONE MEDICAL SENIORS GROUP, INC.

Practice address

9725 Wilshire Blvd
Beverly Hills, CA 90212-2002

Phone

(888) 663-6331

Fax

(415) 252-7176

NPI assigned

Jan 30, 2026

Last updated

Jan 30, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Andrew S Diamond, MDNPI 1154347235

Title

Chief Medical Officer

Phone

(415) 689-3426

Specialties & licenses 3

Addresses

Tax ID family

One Medical Seniors Group Inc4 organizations share this tax ID, including this one

Other organizations with this tax ID 3

Organizations that report the same tax identification number in the National Provider Directory.

• One Medical Seniors Group, Inc.

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1326986050
  NPD tax ID
• One Medical Seniors Group, Inc.

  • Family Medicine Physician
  • San Francisco, CA
  • NPI 1497631337
  NPD tax ID
• One Medical Seniors Group, Inc.

  • Family Medicine Physician
  • San Francisco, CA
  • NPI 1962206276
  NPD tax ID

Locations

Practitioners 1

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.

• Andrew S Diamond, MD, PHD

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1154347235
  Authorized official Same address or phone

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

{
    "created_epoch": "1769731200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1769731200000",
    "number": "1699625483",
    "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": "9725 WILSHIRE BLVD",
            "city": "BEVERLY HILLS",
            "state": "CA",
            "postal_code": "902122002",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "525 Broadway",
            "address_purpose": "LOCATION",
            "city": "Santa Monica",
            "state": "CA",
            "postal_code": "904012478",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10250 Santa Monica Blvd Ste 1280",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900676469",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "700 S Flower St",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900174101",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8570 W Sunset Blvd",
            "address_purpose": "LOCATION",
            "city": "West Hollywood",
            "state": "CA",
            "postal_code": "900692312",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "740 S Allied Way Ste D",
            "address_purpose": "LOCATION",
            "city": "El Segundo",
            "state": "CA",
            "postal_code": "902455512",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10000 Washington Blvd Ste 108",
            "address_purpose": "LOCATION",
            "city": "Culver City",
            "state": "CA",
            "postal_code": "902322782",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6460 E Pacific Coast Hwy Ste 210",
            "address_purpose": "LOCATION",
            "city": "Long Beach",
            "state": "CA",
            "postal_code": "908034259",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "12301 Wilshire Blvd",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900251007",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3850 Barranca Pkwy Ste Kl",
            "address_purpose": "LOCATION",
            "city": "Irvine",
            "state": "CA",
            "postal_code": "926061202",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "26741 Aliso Creek Rd Ste F",
            "address_purpose": "LOCATION",
            "city": "Aliso Viejo",
            "state": "CA",
            "postal_code": "926564804",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "801 Spectrum Center Dr",
            "address_purpose": "LOCATION",
            "city": "Irvine",
            "state": "CA",
            "postal_code": "926184959",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7881 Edinger Ave Ste 124",
            "address_purpose": "LOCATION",
            "city": "Huntington Beach",
            "state": "CA",
            "postal_code": "926477647",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6250 Topanga Canyon Blvd Ste 1585",
            "address_purpose": "LOCATION",
            "city": "Woodland Hills",
            "state": "CA",
            "postal_code": "913672280",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "ONE MEDICAL SENIORS GROUP, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-01-30",
        "last_updated": "2026-01-30",
        "certification_date": "2026-01-30",
        "status": "A",
        "authorized_official_last_name": "DIAMOND",
        "authorized_official_first_name": "ANDREW",
        "authorized_official_middle_name": "S",
        "authorized_official_title_or_position": "CHIEF MEDICAL OFFICER",
        "authorized_official_telephone_number": "415-689-3426",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Family Medicine Physician in Beverly Hills, CA
• Providers in Beverly Hills, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.