William James Demartini, MD - Medicare Diagnostic Radiology in Greenbrae, CA

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William James Demartini, MD is a medicare enrolled "Radiology - Diagnostic Radiology" physician in Greenbrae, California. He graduated from medical school in 1973 and has 51 years of diverse experience with area of expertise as Diagnostic Radiology. He is a member of the group practice California Advanced Imaging Medical Associates Inc and his current practice location is 250 Bon Air Rd, Greenbrae, California. You can reach out to his office (for appointments etc.) via phone at (415) 925-7301.

William James Demartini is licensed to practice in California (license number G27905) 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 1427091016.

Contact Information

William James Demartini, MD
250 Bon Air Rd,
Greenbrae, CA 94904-1702
(415) 925-7301
Not Available

Map and Direction




Physician's Profile

Full NameWilliam James Demartini
GenderMale
SpecialityDiagnostic Radiology
Experience51 Years
Location250 Bon Air Rd, Greenbrae, 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:
  • William James Demartini graduated from medical school in 1973
  NPI Data:
  • NPI Number: 1427091016
  • Provider Enumeration Date: 06/13/2006
  • Last Update Date: 04/26/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 5799683918
  • Enrollment ID: I20060209000228

Medical Identifiers

Medical identifiers for William James Demartini such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1427091016NPI-NPPES
00G279050MedicaidCA
300121750OtherCARAILROAD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0202XRadiology - Diagnostic Radiology G27905 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Sonoma Valley HospitalSonoma, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
California Advanced Imaging Medical Associates Inc024414422873

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. William James Demartini allows following entities to bill medicare on his behalf.
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063487122
PECOS PAC ID: 5496668410
Enrollment ID: O20031106000503
Entity NameCalifornia Advanced Imaging Medical Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881646909
PECOS PAC ID: 0244144228
Enrollment ID: O20031113000847
Entity NameState Of California - Department Of Developmental Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154372498
PECOS PAC ID: 4082788732
Enrollment ID: O20081114000496

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. William James Demartini 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
William James Demartini, MD
Po Box 6102,
Novato, CA 94948-6102

Ph: (415) 884-3418		William James Demartini, MD
250 Bon Air Rd,
Greenbrae, CA 94904-1702

Ph: (415) 925-7301

Reviews and Comments


Radiology Doctors in Greenbrae, CA

Dennis Steven Orwig, M.D.
Radiology
Medicare: Medicare Enrolled
Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904
Phone: 415-925-7301    
Dr. Natalya Lvoff, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 100a Drakes Landing Road, Suite 140, Greenbrae, CA 94904
Phone: 415-461-4282    
Brian John Salmen, M.D.
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904
Phone: 415-925-7301    
Francine Erna Halberg, MD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 1350 S Eliseo Dr, #100, Greenbrae, CA 94904
Phone: 209-342-2300    Fax: 209-524-4240
Dr. Jay A Kaiser, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 1260 S Eliseo Dr, Suite 100, Greenbrae, CA 94904
Phone: 415-461-9033    Fax: 415-883-8082
Dr. Donna Hoghooghi, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904
Phone: 415-925-7080    
Dr. Philip Kurzman, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904
Phone: 415-884-3418    Fax: 415-883-8082

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.