Winona Tan, MD - Medicare Obstetrics/gynecology in Palo Alto, CA

Winona Tan, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Palo Alto, California. She went to University Of California, San Francisco School Of Medicine and graduated in 1993 and has 31 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Sutter Bay Medical Foundation and her current practice location is 795 El Camino Real, Palo Alto, California. You can reach out to her office (for appointments etc.) via phone at (650) 853-2917.

Winona Tan is licensed to practice in California (license number G80084) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1003904350.

Contact Information

Winona Tan, MD
795 El Camino Real,
Palo Alto, CA 94301-2302
(650) 853-2917
Not Available

Map and Direction




Physician's Profile

Full NameWinona Tan
GenderFemale
SpecialityObstetrics/gynecology
Experience31 Years
Location795 El Camino Real, Palo Alto, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Winona Tan attended and graduated from University Of California, San Francisco School Of Medicine in 1993
  NPI Data:
  • NPI Number: 1003904350
  • Provider Enumeration Date: 10/11/2006
  • Last Update Date: 03/04/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 4385703305
  • Enrollment ID: I20081105000896

Medical Identifiers

Medical identifiers for Winona Tan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003904350NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology G80084 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Sutter Bay Medical Foundation42845387782941

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. Winona Tan allows following entities to bill medicare on her behalf.
Entity NameSutter Bay Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013950807
PECOS PAC ID: 4284538778
Enrollment ID: O20031125000909

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. Winona Tan 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
Winona Tan, MD
325 Distel Cir,
Los Altos, CA 94022-1408

Ph: (650) 853-2917
Winona Tan, MD
795 El Camino Real,
Palo Alto, CA 94301-2302

Ph: (650) 853-2917

Reviews and Comments


Obstetrics & Gynecology Doctors in Palo Alto, CA

Dr. Edward Lee Cohen, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 3801 Miranda Ave, #112, Palo Alto, CA 94304
Phone: 650-493-5000    
Dr. Leah Sharon Millheiser, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 900 Blake Wilbur Dr, Palo Alto, CA 94304
Phone: 650-498-6004    
Dr. Amy E Judy, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 770 Welch Rd, Palo Alto, CA 94304
Phone: 650-498-4069    
Dr. Sanaa Hasan Suharwardy, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 725 Welch Rd, Palo Alto, CA 94304
Phone: 650-497-8000    
Dr. Olga Halszka Kciuk, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 453 Quarry Road, Dept Of Obgyn, Mail Code 5317, Palo Alto, CA 94304
Phone: 650-725-5720    
Elizabeth Swenson, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 795 El Camino Real, Palo Alto, CA 94301
Phone: 650-321-4121    

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.