May Y Mar, DO - Medicare Family Practice in Union City, CA

May Y Mar, DO is a medicare enrolled "Family Medicine" physician in Union City, California. She went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 2015 and has 9 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Permanente Medical Group Inc and her current practice location is 3553 Whipple Rd, Union City, California. You can reach out to her office (for appointments etc.) via phone at (510) 675-4010.

May Y Mar is licensed to practice in California (license number 20A20198) 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 1194110908.

Contact Information

May Y Mar, DO
3553 Whipple Rd,
Union City, CA 94587-1507
(510) 675-4010
Not Available

Map and Direction




Physician's Profile

Full NameMay Y Mar
GenderFemale
SpecialityFamily Practice
Experience9 Years
Location3553 Whipple Rd, Union City, 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:
  • May Y Mar attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 2015
  NPI Data:
  • NPI Number: 1194110908
  • Provider Enumeration Date: 03/30/2015
  • Last Update Date: 12/13/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 1456641851
  • Enrollment ID: I20230317002256

Medical Identifiers

Medical identifiers for May Y Mar such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194110908NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine OP60831174 (Washington)Secondary
207Q00000XFamily Medicine 20A20198 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Permanente Medical Group Inc89219102258285

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. May Y Mar allows following entities to bill medicare on her behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710

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. May Y Mar 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
May Y Mar, DO
3553 Whipple Rd,
Union City, CA 94587-1507

Ph: (510) 675-4010
May Y Mar, DO
3553 Whipple Rd,
Union City, CA 94587-1507

Ph: (510) 675-4010

Reviews and Comments


Family Medicine Doctors in Union City, CA

Dr. Son Lam Duc Nguyen, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    
Dr. Tam T Nguyen, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 33077 Alvarado Niles Rd, Union City, CA 94587
Phone: 510-248-1018    Fax: 510-605-6055
Antonina Bondyasheva, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    
Abby Wang, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 3555 Whipple Rd Bldg B, Union City, CA 94587
Phone: 510-602-1311    
Isabel Christina Tejeda, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-675-4668    Fax: 510-675-2154
Dr. Rudolph M Chang, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    

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.