Justin P Mcwilliams, MD - Medicare Interventional Radiology in Los Angeles, CA

Justin P Mcwilliams, MD is a medicare enrolled "Radiology - Vascular & Interventional Radiology" physician in Los Angeles, California. He went to University Of California, Geffen School Of Medicine and graduated in 2003 and has 21 years of diverse experience with area of expertise as Interventional Radiology. He is a member of the group practice Ucla Radiology Medical Group and his current practice location is 757 Westwood Plz, 2nd Floor, Suite 2125c, Los Angeles, California. You can reach out to his office (for appointments etc.) via phone at (310) 301-6800.

Justin P Mcwilliams is licensed to practice in California (license number A90982) 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 1437292331.

Contact Information

Justin P Mcwilliams, MD
757 Westwood Plz, 2nd Floor, Suite 2125c,
Los Angeles, CA 90095-8358
(310) 301-6800
(310) 794-9035

Map and Direction




Physician's Profile

Full NameJustin P Mcwilliams
GenderMale
SpecialityInterventional Radiology
Experience21 Years
Location757 Westwood Plz, Los Angeles, 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:
  • Justin P Mcwilliams attended and graduated from University Of California, Geffen School Of Medicine in 2003
  NPI Data:
  • NPI Number: 1437292331
  • Provider Enumeration Date: 02/14/2007
  • Last Update Date: 12/17/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 2466466081
  • Enrollment ID: I20060202000413

Medical Identifiers

Medical identifiers for Justin P Mcwilliams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437292331NPI-NPPES
00A909820MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0204XRadiology - Vascular & Interventional Radiology A90982 (California)Primary
2085R0202XRadiology - Diagnostic Radiology A90982 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ronald Reagan Ucla Medical CenterLos angeles, CAHospital
Santa Monica - Ucla Med Ctr & Orthopaedic HospitalSanta monica, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ucla Radiology Medical Group8921902065182

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. Justin P Mcwilliams allows following entities to bill medicare on his behalf.
Entity NameUcla Radiology Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881670248
PECOS PAC ID: 8921902065
Enrollment ID: O20031120001026
Entity NameSt Francis Radiology Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215085618
PECOS PAC ID: 7113953159
Enrollment ID: O20050712000380
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891110888
PECOS PAC ID: 5294958815
Enrollment ID: O20140528001538
Entity NameMartin Luther King Jr Community Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356899777
PECOS PAC ID: 8628359502
Enrollment ID: O20170109001311

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. Justin P Mcwilliams 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
Justin P Mcwilliams, MD
5767 W Century Blvd Ste 400,
Los Angeles, CA 90045-5631

Ph: () -
Justin P Mcwilliams, MD
757 Westwood Plz, 2nd Floor, Suite 2125c,
Los Angeles, CA 90095-8358

Ph: (310) 301-6800

Reviews and Comments


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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.