William R. Tomkiewicz, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A43022 Issued in CA

Practice address

2200 Ofarrell St
San Francisco, CA 94115-3357

Phone

(415) 833-2000

NPI assigned

Nov 1, 2006

Sex

Male

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 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in HI, CA2 enrollments

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 2

Specialty

Emergency MedicineAlso: Family Practice, Internal Medicine

Education

University of Texas Southwestern Medical School at Dallas, 1982

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Southern California Permanente Medical GroupGroup PAC ID 6002729175, 11,250 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

81.03 of 100Reported as subgroup

Quality

80.86

Promoting interoperability

76

Improvement activities

40

Cost

75.91

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wtomkiewicz171211@direct-ucsfmedicalcenter.org

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.

• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Baldwin Park, CA
  • NPI 1770515280
  Medicare reassignment Care Compare group NPD
• Cep America - California

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1023063542
  Medicare reassignment NPD
• Hawaii Permanente Medical Group Inc

  • Health Maintenance Organization
  • Honolulu, HI
  • NPI 1710945969
  Medicare reassignment NPD
• Cep America - California

  • Emergency Medicine Physician
  • Novato, CA
  • NPI 1124577259
  NPD
• Cep America-California

  • Emergency Medicine Physician
  • Murrieta, CA
  • NPI 1588552848
  NPD
• Regents Univ of California UCSF

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1124439807
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Los Angeles, CA
  • NPI 1043242563
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Santa Clarita, CA
  • NPI 1316409410
  NPD
• Anaheim Global Medical Center, Inc

  • General Acute Care Hospital
  • Anaheim, CA
  • NPI 1790778488
  NPD (past)

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

{
    "created_epoch": "1162339200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750982400000",
    "number": "1962580571",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1800 HARRISON ST FL 7",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946123466",
            "telephone_number": "510-625-6262"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2200 OFARRELL ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941153357",
            "telephone_number": "415-833-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TOMKIEWICZ",
        "first_name": "WILLIAM",
        "middle_name": "R.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-01",
        "last_updated": "2025-06-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A43022",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A430220",
            "state": "CA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "Y",
            "endpointDescription": "Carequality",
            "affiliationName": "Southern California Permanente Medical Group",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "4647 Zion Ave",
            "city": "San Diego",
            "state": "CA",
            "country_code": "US",
            "postal_code": "921202507",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Mawayidna Tiwarika Tombegou, NP
• Crispin Tombo, LCSW
• Nicole Camela Tomboc, PHARM.D.
• Adrian Tomes
• Nobuyo Tomita
• Stephen J. Tomlanovich, MD
• Emily Storm Tomlinson, MD
• Erika Tomlinson, PSYD
• Jennifer Tomlinson, RN, AGNP-C
• Rachel Claire Tomlinson, PHD

• Emergency Medicine Physician in San Francisco, CA
• Providers in San Francisco, 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 Jun 27, 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.