Dr Robert Michael Williams, MD, PHD - Medicare Medical Oncology in Beverly Hills, CA

Dr Robert Michael Williams, MD, PHD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Beverly Hills, California. He went to Harvard Medical School and graduated in 1974 and has 50 years of diverse experience with area of expertise as Medical Oncology. His current practice location is 269 S Beverly Dr, Suite 588, Beverly Hills, California. You can reach out to his office (for appointments etc.) via phone at (310) 270-7194.

Dr Robert Michael Williams is licensed to practice in California (license number G75542) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1033155874.

Contact Information

Dr Robert Michael Williams, MD, PHD
269 S Beverly Dr, Suite 588,
Beverly Hills, CA 90212-3851
(310) 270-7194
(925) 828-0734

Map and Direction




Physician's Profile

Full NameDr Robert Michael Williams
GenderMale
SpecialityMedical Oncology
Experience50 Years
Location269 S Beverly Dr, Beverly Hills, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Robert Michael Williams attended and graduated from Harvard Medical School in 1974
  NPI Data:
  • NPI Number: 1033155874
  • Provider Enumeration Date: 06/21/2006
  • Last Update Date: 07/27/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 2961528047
  • Enrollment ID: I20100927000301

Medical Identifiers

Medical identifiers for Dr Robert Michael Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1033155874NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology G75542 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Doctors Medical CenterModesto, CAHospital

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Robert Michael Williams allows following entities to bill medicare on his behalf.
Entity NameNorthern California Cancer Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447539374
PECOS PAC ID: 1658543186
Enrollment ID: O20111005000759

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. Dr Robert Michael Williams 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
Dr Robert Michael Williams, MD, PHD
269 S Beverly Dr, Suite 588,
Beverly Hills, CA 90212-3851

Ph: (310) 270-7194
Dr Robert Michael Williams, MD, PHD
269 S Beverly Dr, Suite 588,
Beverly Hills, CA 90212-3851

Ph: (310) 270-7194

Reviews and Comments


Internal Medicine Doctors in Beverly Hills, CA

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Phone: 310-274-0657    Fax: 310-274-6083
Dr. Raymond Zimmer, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 8501 Wilshire #150, Beverly Hills, CA 90211
Phone: 310-358-3496    Fax: 310-247-9614

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.