Dr Michael Ma, MD - Medicare Internal Medicine in San Gabriel, CA

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Dr Michael Ma, MD is a medicare enrolled "Internal Medicine" physician in San Gabriel, California. His current practice location is 933 Walnut St, San Gabriel, California. You can reach out to his office (for appointments etc.) via phone at (626) 372-5922.

Dr Michael Ma is licensed to practice in California (license number A107326) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1891945804.

Contact Information

Dr Michael Ma, MD
933 Walnut St,
San Gabriel, CA 91776-2836
(626) 372-5922
Not Available

Map and Direction




Physician's Profile

Full NameDr Michael Ma
GenderMale
SpecialityInternal Medicine
Location933 Walnut St, San Gabriel, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1891945804
  • Provider Enumeration Date: 09/26/2008
  • Last Update Date: 11/30/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4880729847
  • Enrollment ID: I20100316000229

Medical Identifiers

Medical identifiers for Dr Michael Ma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891945804NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0002XInternal Medicine - Hospice And Palliative Medicine A107326 (California)Secondary
207R00000XInternal Medicine A107326 (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 Michael Ma allows following entities to bill medicare on his behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770515280
PECOS PAC ID: 6002729175
Enrollment ID: O20031110000678
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316979834
PECOS PAC ID: 6002729175
Enrollment ID: O20040126000823

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 Michael Ma 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 Michael Ma, MD
933 Walnut St,
San Gabriel, CA 91776-2836

Ph: (626) 372-5922		Dr Michael Ma, MD
933 Walnut St,
San Gabriel, CA 91776-2836

Ph: (626) 372-5922

Reviews and Comments


Internal Medicine Doctors in San Gabriel, CA

Dr. Aaron I-lun Jeng, MD, MPH
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 438 W Las Tunas Dr, San Gabriel, CA 91776
Phone: 626-289-5454    
Michelle L. Chan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1726 New Ave, San Gabriel, CA 91776
Phone: 626-943-0780    Fax: 626-943-0200
Dr. Greg Shih-han Yen, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 131 E Las Tunas Dr, San Gabriel, CA 91776
Phone: 626-576-8500    Fax: 626-576-8050
Dr. Zhi Zeng, MD
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 316 E Las Tunas Dr Ste 102, San Gabriel, CA 91776
Phone: 626-300-8880    
Dr. James William Golden, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 225 E Las Tunas Dr, San Gabriel, CA 91776
Phone: 626-287-8642    Fax: 626-287-2970
Christine Shen Wong, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 506 W Valley Blvd Ste 100, San Gabriel, CA 91776
Phone: 626-308-3800    
Dr. Jeff Sao, M.D
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 721 El Monte St, San Gabriel, CA 91776
Phone: 626-731-4000    

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.