Darby Annette Clayson, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A139455 Issued in CA

Practice address

1575 7TH Ave
San Francisco, CA 94122-3704

Phone

(702) 453-3799

Fax

(702) 453-5741

NPI assigned

Nov 3, 2005

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

HospitalistAlso: Internal Medicine

Education

Baylor College of Medicine, 1998

Medicare assignment

May accept Medicare assignment

Group practices

San Francisco Unified Physicians Group, IncGroup PAC ID 8426310004, 18 clinicians

Vituity Hospitalists PCGroup PAC ID 2567714090, 78 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• UCSF Health Saint Francis Hospital Hospital, San Francisco, CA, CCN 050152
• Chinese Hospital Hospital, San Francisco, CA, CCN 050407
• UCSF Medical Center Hospital, San Francisco, CA, CCN 050454
• Lawton Skilled Nursing & Rehabilitation Center Nursing home, San Francisco, CA, CCN 055175

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dclayson@yourcarecommunity.org

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• GHC of San Fran 68, LLC

  • Skilled Nursing Facility
  • San Francisco, CA
  • NPI 1538685946

  Adp of the SNF, Operational/Managerial Control

  CMS ownership

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.

• Clayson Longview Health

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1275400681
  Medicare reassignment NPD Authorized official
• Vituity Hospitalists PC

  • Hospitalist Physician
  • Redding, CA
  • NPI 1730666108

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• San Francisco Unified Physicians Group, Inc.

  • Hospitalist Physician
  • San Francisco, CA
  • NPI 1982104162
  Medicare reassignment Care Compare group
• Vituity Hospitalists PC

  • Hospitalist Physician
  • San Luis Obispo, CA
  • NPI 1104551639

  Internal Medicine

  NPD
• Vituity Hospitalists PC

  • Hospitalist Physician
  • San Francisco, CA
  • NPI 1659858025

  Internal Medicine

  NPD
• Cep America - California

  • Emergency Medicine Physician
  • Redding, CA
  • NPI 1376604686
  NPD (past)
• Gaurav Datta MD Inc

  • Internal Medicine Physician
  • Elk Grove, CA
  • NPI 1033735931
  NPD (past)
• Seton Medical Center

  • General Acute Care Hospital
  • Daly City, CA
  • NPI 1679608640
  NPD (past)
• Desert Springs Hospital

  • General Acute Care Hospital
  • Las Vegas, NV
  • NPI 1154317964
  NPD (past)
• Inpatient Consultants of Nevada, Inc. a Medical Corporation

  • Hospitalist Physician
  • Las Vegas, NV
  • NPI 1821041070

  Internal Medicine

  NPD (past)
• Sunrise Hospital and Medical Center, LLC

  • General Acute Care Hospital
  • Las Vegas, NV
  • NPI 1689611774
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Chinese Hospital Association

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1992898837
  Care Compare affiliation
• GHC of San Fran 68, LLC

  • Skilled Nursing Facility
  • San Francisco, CA
  • NPI 1538685946

  Nursing home

  Care Compare affiliation
• UCSF Health Community Hospitals

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1316061997
  Care Compare affiliation
• University of California, San Francisco

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1689772592
  Care Compare affiliation

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

{
    "created_epoch": "1130976000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772150400000",
    "number": "1619968021",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31085",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941310085",
            "telephone_number": "702-453-3799",
            "fax_number": "702-453-5741"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1575 7TH AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941223704",
            "telephone_number": "702-453-3799",
            "fax_number": "702-453-5741"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CLAYSON",
        "first_name": "DARBY",
        "middle_name": "ANNETTE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2005-11-03",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A139455",
            "primary": true
        },
        {
            "code": "171000000X",
            "taxonomy_group": "",
            "desc": "Military Health Care Provider",
            "state": "NV",
            "license": "11502",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NV",
            "license": "11502",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tia Clay, MD
• Mark E Claycomb, LCSW
• Alyse Michele Clayman, ASW
• Katherine Claypoole McKenzie, M.S.
• Clayson Longview Health
• Lauren Clayton
• Jennifer Claytor
• Cleanslate Health Inc
• Clear Mind Psychology LTD
• Clearcast

• Internal Medicine Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; 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.