Mark Makoto Tanaka, MD - Medicare Emergency Medicine in San Leandro, CA

Mark Makoto Tanaka, MD is a medicare enrolled "Emergency Medicine" physician in San Leandro, California. He went to University Of California, San Francisco School Of Medicine and graduated in 1999 and has 25 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Permanente Medical Group Inc and his current practice location is 2500 Merced St, San Leandro, California. You can reach out to his office (for appointments etc.) via phone at (510) 454-1000.

Mark Makoto Tanaka is licensed to practice in California (license number A83467) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1104904960.

Contact Information

Mark Makoto Tanaka, MD
2500 Merced St,
San Leandro, CA 94577-4201
(510) 454-1000
Not Available

Map and Direction




Physician's Profile

Full NameMark Makoto Tanaka
GenderMale
SpecialityEmergency Medicine
Experience25 Years
Location2500 Merced St, San Leandro, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mark Makoto Tanaka attended and graduated from University Of California, San Francisco School Of Medicine in 1999
  NPI Data:
  • NPI Number: 1104904960
  • Provider Enumeration Date: 11/01/2006
  • Last Update Date: 12/09/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 0648177055
  • Enrollment ID: I20031215000564

Medical Identifiers

Medical identifiers for Mark Makoto Tanaka such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1104904960NPI-NPPES
00A834670MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A83467 (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. Mark Makoto Tanaka allows following entities to bill medicare on his 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. Mark Makoto Tanaka 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
Mark Makoto Tanaka, MD
2500 Merced St,
San Leandro, CA 94577-4201

Ph: (510) 454-1000
Mark Makoto Tanaka, MD
2500 Merced St,
San Leandro, CA 94577-4201

Ph: (510) 454-1000

Reviews and Comments


Emergency Medicine Doctors in San Leandro, CA

Chin-hsiang Feng,
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Merced St, San Leandro, CA 94577
Phone: 510-518-5598    
Dr. Grace Mindy Lee, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 2500 Merced St, San Leandro, CA 94577
Phone: 510-454-1000    Fax: 203-688-5599
Dr. Vibha Kundi Gupta, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Merced St, San Leandro, CA 94577
Phone: 517-648-0339    
Allison Boyd, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Merced St, San Leandro, CA 94577
Phone: 510-454-1000    
Dr. Bing Chung Shen, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 2500 Merced St, San Leandro, CA 94577
Phone: 510-454-1000    
Anthony Michael Montefusco Iv,
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 13855 E 14th St, San Leandro, CA 94578
Phone: 209-342-2300    Fax: 209-524-4240

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.