Kelliann Marie Masterson, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

55354 Issued in CA

Practice address

2175 Market St
San Francisco, CA 94114-1474

Phone

(888) 663-6331

Fax

(415) 252-7176

NPI assigned

Nov 7, 2017

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

One Medical Group IncGroup PAC ID 2567623739, 330 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• One Medical Group, Inc.

  • Family Medicine Physician
  • San Francisco, CA
  • NPI 1467781641
  Medicare reassignment Care Compare group NPD
• One Medical Group, Inc

  • Family Medicine Physician
  • Tigard, OR
  • NPI 1891521134
  NPD
• Jabari Reeves MD Medical Corporation

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1942893425
  NPD (past)

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

{
    "created_epoch": "1510012800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742169600000",
    "number": "1275046740",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2175 MARKET ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941141474",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1250 Heartwood Dr",
            "address_purpose": "LOCATION",
            "city": "Rohnert Park",
            "state": "CA",
            "postal_code": "949281895",
            "country_code": "US",
            "telephone_number": "925-348-6197",
            "fax_number": "925-348-6197",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3850 Grand Ave",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946101004",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "559 Clay St Ste 200",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941113029",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASTERSON",
        "first_name": "KELLIANN",
        "middle_name": "MARIE",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-11-07",
        "last_updated": "2025-03-17",
        "certification_date": "2025-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "55354",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rajeev Masson
• Dylan Masters, MD
• Nicole Masters, L.AC.
• Steven J. Masters, MD
• Frances Emily Masterson
• Thomas E. Masterson, D.M.D.
• Judith Barker Mastick, RN,MN,FNP-C
• Julia Mastrobuono
• Francis Kei-Ichi Masuda, MD, PHD
• Evan-Yutaka Kamealawelaweimiaina Masunaga, DDS

• Physician Assistant in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.