Ruth Williamson, MD - Medicare in Pasadena, CA

Ruth Williamson, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in Pasadena, California. Her current practice location is 625 S Fair Oaks Ave Ste 100, Pasadena, California. You can reach out to her office (for appointments etc.) via phone at (626) 397-5149.

Ruth Williamson is licensed to practice in California (license number G707B5C) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1952486912.

Contact Information

Ruth Williamson, MD
625 S Fair Oaks Ave Ste 100,
Pasadena, CA 91105-2640
(626) 397-5149
(310) 397-2147

Map and Direction




Physician's Profile

Full NameRuth Williamson
GenderFemale
Speciality
Experience Years
Location625 S Fair Oaks Ave Ste 100, Pasadena, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ruth Williamson attended and graduated from in
  NPI Data:
  • NPI Number: 1952486912
  • Provider Enumeration Date: 10/26/2006
  • Last Update Date: 10/13/2022
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for Ruth Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1952486912NPI-NPPES
GR0087110MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology G707B5C (California)Primary

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Ruth Williamson is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Ruth Williamson, MD
4140 W 190th St,
Torrance, CA 90504-5513

Ph: () -
Ruth Williamson, MD
625 S Fair Oaks Ave Ste 100,
Pasadena, CA 91105-2640

Ph: (626) 397-5149

Reviews and Comments


Radiology Doctors in Pasadena, CA

Dr. Richard A. Reed, MEDICAL DOCTOR
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Dr. Luis Balmore Gutierrez, M.D.
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Dr. Ramona Kyaw, M.D.
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Dr. Warren Wai Lam, MEDICAL DOCTOR
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Practice Location: 100 W California Blvd, Pasadena, CA 91105
Phone: 626-397-5139    Fax: 626-447-1058
Dr. Pia Lindstrom Luedtke, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 100 W California Blvd, Huntington Memorial Hospital, Pasadena, CA 91105
Phone: 626-397-5139    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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