Cynthia Billmeyer Clark, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

G53191 Issued in CA

Practice address

4000 Civic Center Dr
San Rafael, CA 94903-4171

Phone

(209) 342-2300

Fax

(209) 524-4240

NPI assigned

Oct 17, 2005

Last updated

Jul 13, 2026By the provider in NPPES

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

Other identifiers 2

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1023063542
  Medicare reassignment NPD
• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • Greenbrae, CA
  • NPI 1417975319
  NPD
• Cep America-California

  • Emergency Medicine Physician
  • Murrieta, CA
  • NPI 1588552848
  NPD

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

{
    "created_epoch": "1129507200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1144219767",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4301 NORTHSTAR WAY",
            "city": "MODESTO",
            "state": "CA",
            "postal_code": "953569262",
            "telephone_number": "209-342-2300",
            "fax_number": "209-524-4240"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4000 CIVIC CENTER DR",
            "city": "SAN RAFAEL",
            "state": "CA",
            "postal_code": "949034171",
            "telephone_number": "209-342-2300",
            "fax_number": "209-524-4240"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CLARK",
        "first_name": "CYNTHIA",
        "middle_name": "BILLMEYER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-10-17",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "G53191",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "00G531910",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G531910",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Deirdra Joy Claiborne, L.AC.
• J. David Claiborne, MD
• Angela Clare
• Clarity Telehealth of Florida
• Clarity-James Medical Services Corp
• Eugenia Clark, M.A. ED., BCBA
• Jennifer Alexandria Clark
• Julianna Frances Clark
• Wade Clark, PHARM.D.
• Claudine Katherine Clarke, M. S.

• Emergency Medicine Physician in San Rafael, CA
• Providers in San Rafael, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.