Tammy Yue Chen, MD - Medicare Family Practice in Oakland, CA

Tammy Yue Chen, MD is a medicare enrolled "Family Medicine" physician in Oakland, California. She graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Asian Health Services and her current practice location is 818 Webster St, Oakland, California. You can reach out to her office (for appointments etc.) via phone at (510) 986-6830.

Tammy Yue Chen is licensed to practice in California (license number A90848) 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 1093887721.

Contact Information

Tammy Yue Chen, MD
818 Webster St,
Oakland, CA 94607-4220
(510) 986-6830
(510) 986-6890

Map and Direction




Physician's Profile

Full NameTammy Yue Chen
GenderFemale
SpecialityFamily Practice
Experience42 Years
Location818 Webster St, Oakland, 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:
  • Tammy Yue Chen graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1093887721
  • Provider Enumeration Date: 11/15/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 4789746611
  • Enrollment ID: I20081230000568

Medical Identifiers

Medical identifiers for Tammy Yue Chen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1093887721NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine A90848 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Alta Bates Summit Medical CenterOakland, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Asian Health Services024427102169

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. Tammy Yue Chen allows following entities to bill medicare on her behalf.
Entity NameAsian Health Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841331402
PECOS PAC ID: 0244271021
Enrollment ID: O20050523000209

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. Tammy Yue Chen 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
Tammy Yue Chen, MD
818 Webster St,
Oakland, CA 94607-4220

Ph: (510) 986-6830
Tammy Yue Chen, MD
818 Webster St,
Oakland, CA 94607-4220

Ph: (510) 986-6830

Reviews and Comments


Family Medicine Doctors in Oakland, CA

Phuong Duc Dang, MD
Family Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 145 International Blvd, Oakland, CA 94606
Phone: 510-465-4422    Fax: 510-465-1466
Lisa Renee Montang, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1030 International Blvd, Oakland, CA 94601
Phone: 510-238-5400    Fax: 510-238-5437
Asano Floy Fertig, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1515 Fruitvale Ave, Oakland, CA 94601
Phone: 510-535-6300    Fax: 510-535-5802
Dr. Brent K. Sugimoto, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 275 W Macarthur, Oakland, CA 94611
Phone: 510-752-1000    Fax: 925-370-5142
Mr. Yuyang Mei, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 818 Webster St, Oakland, CA 94607
Phone: 510-986-6800    Fax: 510-986-6896
Valerie A. Mcfarlane, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 275 W Macarthur Blvd, Oakland, CA 94611
Phone: 510-752-1000    
Monique Thiry-zaragoza, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1030 International Blvd, Oakland, CA 94606
Phone: 510-238-5400    Fax: 510-238-5437

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.