Ruth Williamson, MD

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

G707B5C Issued in CA

Practice address

625 S Fair Oaks Ave Ste 100
Pasadena, CA 91105-2640

Phone

(626) 397-5149

Fax

(310) 397-2147

NPI assigned

Oct 26, 2006

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 1

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

Radiation Oncology

Education

University of Southern California Keck School of Medicine, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cedars-Sinai Medical Care FoundationGroup PAC ID 0941106645, 1,684 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Huntington Hospital Hospital, Pasadena, CA, CCN 050438
• Usc Verdugo Hills Hospital Hospital, Glendale, CA, CCN 050124
• City of Hope Helford Clinical Research Hospital Hospital, Duarte, CA, CCN 050146

Merit-based Incentive Payment System (MIPS)

Final score

89.14 of 100Reported as group

Quality

84.79

Promoting interoperability

99

Improvement activities

40

Cost

73.15

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rwilliamson419010@direct.cshs.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.

• Cedars-Sinai Medical Care Foundation

  • Specialist
  • Los Angeles, CA
  • NPI 1316984388
  Medicare reassignment Care Compare group NPD
• City of Hope Medical Foundation

  • Hematology & Oncology Physician
  • Duarte, CA
  • NPI 1871886366

  Radiation Oncology

  Medicare reassignment NPD
• Huntington Radiation Medical Group

  • Specialist
  • Pasadena, CA
  • NPI 1780766758
  NPD Authorized official
• Pasadena Hospital Association, LTD.

  • Psychiatric Hospital Unit
  • Pasadena, CA
  • NPI 1437121142
  NPD (past)

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

• City of Hope National Medical Center

  • General Acute Care Hospital
  • Duarte, CA
  • NPI 1750358297
  Care Compare affiliation
• Pasadena Hospital Association, LTD

  • General Acute Care Hospital
  • Pasadena, CA
  • NPI 1407828429
  Care Compare affiliation
• Usc Verdugo Hills Hospital

  • General Acute Care Hospital
  • Glendale, CA
  • NPI 1033716147
  Care Compare affiliation

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

{
    "created_epoch": "1161820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1665619200000",
    "number": "1952486912",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4140 W 190TH ST",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905045513"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "625 S FAIR OAKS AVE STE 100",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911052640",
            "telephone_number": "626-397-5149",
            "fax_number": "310-397-2147"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "100 W California Blvd",
            "address_purpose": "LOCATION",
            "city": "Pasadena",
            "state": "CA",
            "postal_code": "911053010",
            "country_code": "US",
            "telephone_number": "626-397-5149",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "RUTH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-10-26",
        "last_updated": "2022-10-13",
        "certification_date": "2022-10-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "CA",
            "license": "G707B5C",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "GR0087110",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Tracey Williams, RN
• Travon Williams
• Gloria Marie Williamson, REGISTERED DIETITIAN
• Latoya Michelle Williamson, LPT
• Monikeo Tek Williamson, FNP-BC
• Kama Willis-Jamison
• Valerie Lynn Willis, MSN, RN, PNP, CNS
• Lisa Anne Willmon, MFT
• Tasha Tennell Willoughby
• Willpower Recovery Center Inc

• Radiation Oncology Physician in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Radiation Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 13, 2022; 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.