One Medical Seniors Group, Inc.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

Legal business name

ONE MEDICAL SENIORS GROUP, INC.

Practice address

1 Embarcadero Ctr Ste 1900
San Francisco, CA 94111-3723

Phone

(888) 663-6331

Fax

(415) 252-7176

NPI assigned

Aug 14, 2025

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, MD

Title

Owner

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
  • Beverly Hills, CA
  • NPI 1699625483
  NPD tax ID
• One Medical Seniors Group, Inc.

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

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

{
    "created_epoch": "1755129600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1755129600000",
    "number": "1497631337",
    "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": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ONE MEDICAL SENIORS GROUP, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-08-14",
        "last_updated": "2025-08-14",
        "certification_date": "2025-08-14",
        "status": "A",
        "authorized_official_last_name": "DIAMOND",
        "authorized_official_first_name": "ANDREW",
        "authorized_official_middle_name": "S",
        "authorized_official_title_or_position": "OWNER",
        "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": []
}

• One Medical Group, Inc.
• One Medical Group, Inc.
• One Medical Group, Inc.
• One Medical Group, Inc.
• One Medical Seniors Group, Inc.
• One Medical Seniors Group, Inc.
• Richard Fong One, DDS
• Lynne Elizabeth Oneal, CAADE
• Onederful, Inc.
• Daniel Paul Oneill, MD

• Family Medicine Physician in San Francisco, CA
• Providers in San Francisco, 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 Aug 14, 2025; 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.