Marcia Joyce Li, MD - Medicare Internal Medicine in Union City, CA

Marcia Joyce Li, MD is a medicare enrolled "Internal Medicine" physician in Union City, California. She went to Saint Louis University School Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Internal Medicine. 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) 454-1000.

Marcia Joyce Li is licensed to practice in California (license number A70274) 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 1144308909.

Contact Information

Marcia Joyce Li, MD
3553 Whipple Rd,
Union City, CA 94587-1507
(510) 454-1000
Not Available

Map and Direction




Physician's Profile

Full NameMarcia Joyce Li
GenderFemale
SpecialityInternal Medicine
Experience26 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:
  • Marcia Joyce Li attended and graduated from Saint Louis University School Of Medicine in 1998
  NPI Data:
  • NPI Number: 1144308909
  • Provider Enumeration Date: 11/01/2006
  • Last Update Date: 12/20/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 3072792076
  • Enrollment ID: I20110124000306

Medical Identifiers

Medical identifiers for Marcia Joyce Li such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144308909NPI-NPPES
00A702740MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A70274 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Kaiser Foundation Hospital - San LeandroSan leandro, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Permanente Medical Group Inc89219102258376

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. Marcia Joyce Li 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. Marcia Joyce Li 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
Marcia Joyce Li, MD
3553 Whipple Rd,
Union City, CA 94587-1507

Ph: (510) 454-1000
Marcia Joyce Li, MD
3553 Whipple Rd,
Union City, CA 94587-1507

Ph: (510) 454-1000

Reviews and Comments


Internal Medicine Doctors in Union City, CA

Jayasudha S Palavalli, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    
Anjana Vinayak Harnoor, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-675-4013    
Eric S. Brondfield, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3553 Whipple Road, Union City, CA 94587
Phone: 510-784-4000    
Jaishree Acharya, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    
Pamela Wong Nitsos, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Rd, Union City, CA 94587
Phone: 510-454-1000    
Dr. Lauren Yokomizo,
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3553 Whipple Road, Building B, Station 6, Union City, CA 94587
Phone: 212-263-5506    
Alan Curtis Jung, M.D.
Internal 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.