Dr Katherine Williams, MD - Medicare Internal Medicine in Saint Helena, CA

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Dr Katherine Williams, MD is a medicare enrolled "Internal Medicine" physician in Saint Helena, California. She went to University Of California, San Francisco School Of Medicine and graduated in 1984 and has 42 years of diverse experience with area of expertise as Internal Medicine. Her current practice location is 2800 St. Helena Highway North, Saint Helena, California. You can reach out to her office (for appointments etc.) via phone at (707) 758-5936.

Dr Katherine Williams is licensed to practice in California (license number G57420) and she also participates in the medicare program. She may accept medicare assignments (which means she may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and her NPI Number is 1710371463.

Contact Information

Dr Katherine Williams, MD
2800 St. Helena Highway North,
Saint Helena, CA 94574
(707) 758-5936
Not Available

Map and Direction




Physician's Profile

Full NameDr Katherine Williams
GenderFemale
SpecialityInternal Medicine
Experience42 Years
Location2800 St. Helena Highway North, Saint Helena, California
Accepts Medicare AssignmentsMay be. She may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Katherine Williams attended and graduated from University Of California, San Francisco School Of Medicine in 1984
  NPI Data:
  • NPI Number: 1710371463
  • Provider Enumeration Date: 03/20/2015
  • Last Update Date: 03/20/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 4880177864
  • Enrollment ID: I20260309003307

Medical Identifiers

Medical identifiers for Dr Katherine Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1710371463NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G57420 (California)Primary

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 Katherine Williams allows following entities to bill medicare on her behalf.
Entity NameSignify Health Medical Associates of California PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124685169
PECOS PAC ID: 8325370570
Enrollment ID: O20191022000320

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 Katherine 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 Katherine Williams, MD
Po Box 82,
Saint Helena, CA 94574-0082

Ph: (707) 758-5936		Dr Katherine Williams, MD
2800 St. Helena Highway North,
Saint Helena, CA 94574

Ph: (707) 758-5936

Reviews and Comments


Internal Medicine Doctors in Saint Helena, CA

Douglas Philip Tapper, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 10 Woodland Rd, Saint Helena, CA 94574
Phone: 707-963-6399    Fax: 707-967-5915
Nazir J. Habib, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Woodland Rd, Saint Helena, CA 94574
Phone: 707-963-6399    Fax: 707-967-5915
Dr. Hirofumi Hashimoto, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Woodland Rd, Saint Helena, CA 94574
Phone: 707-963-6399    
Dr. Mary Newkirk, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Woodland Rd, Saint Helena, CA 94574
Phone: 707-963-6399    Fax: 707-967-5915
Mrs. Susan Judith Eisenberg, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 6 Woodland Rd Ste 304, Saint Helena, CA 94574
Phone: 707-963-7200    
Dr. Gordon Sweeney, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Woodland Rd, Saint Helena, CA 94574
Phone: 707-963-6399    Fax: 707-697-5915
Monica S Divakaruni, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 999 Adams St Ste 106, Saint Helena, CA 94574
Phone: 707-963-4997    

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.