William Boyce Davis, MD - Medicare Family Medicine in Winters, CA

William Boyce Davis, MD is a medicare enrolled "Family Medicine" physician in Winters, California. His current practice location is 107 Main St, Winters, California. You can reach out to his office (for appointments etc.) via phone at (530) 795-1110.

William Boyce Davis is licensed to practice in California (license number G54959) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1336145689.

Contact Information

William Boyce Davis, MD
107 Main St,
Winters, CA 95694-1930
(530) 795-1110
(530) 795-1115

Map and Direction




Physician's Profile

Full NameWilliam Boyce Davis
GenderMale
SpecialityFamily Medicine
Location107 Main St, Winters, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1336145689
  • Provider Enumeration Date: 06/22/2005
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 1355447004
  • Enrollment ID: I20070426000396

Medical Identifiers

Medical identifiers for William Boyce Davis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336145689NPI-NPPES
G54959OtherCASTATE MEDICAL LICENSE
00G549590MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine G54959 (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. William Boyce Davis 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 Boyce Davis, MD
107 Main St, Po Box 881,
Winters, CA 95694-1930

Ph: (530) 795-1110
William Boyce Davis, MD
107 Main St,
Winters, CA 95694-1930

Ph: (530) 795-1110

Reviews and Comments


Family Medicine Doctors in Winters, CA

Carly Grovhoug, MD
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Phone: 530-795-4591    Fax: 530-795-0315
Dr. Matthew Eagan Rosenberg, MD
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Practice Location: 23 Main St, Winters, CA 95694
Phone: 530-795-4377    
Ms. Jacqueline Michelle Abdalla, M.D.
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Medicare: Medicare Enrolled
Practice Location: 23 Main St, Winters, CA 95694
Phone: 530-795-4377    
Carla J Kakutani, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 111 Main St, Suite B, Winters, CA 95694
Phone: 530-795-4591    Fax: 530-795-0315

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.