Mark J Tamsen, MD - Medicare Emergency Medicine in San Diego, CA

Mark J Tamsen, MD is a medicare enrolled "Emergency Medicine" physician in San Diego, California. He went to University Of Arizona College Of Medicine and graduated in 1979 and has 45 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Emergency Care Dynamics Inc and his current practice location is 3434 Midway Dr Ste 1002, San Diego, California. You can reach out to his office (for appointments etc.) via phone at (619) 225-6200.

Mark J Tamsen is licensed to practice in California (license number G64400) 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 1346241452.

Contact Information

Mark J Tamsen, MD
3434 Midway Dr Ste 1002,
San Diego, CA 92110-4924
(619) 225-6200
(619) 225-6208

Map and Direction




Physician's Profile

Full NameMark J Tamsen
GenderMale
SpecialityEmergency Medicine
Experience45 Years
Location3434 Midway Dr Ste 1002, San Diego, 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 J Tamsen attended and graduated from University Of Arizona College Of Medicine in 1979
  NPI Data:
  • NPI Number: 1346241452
  • Provider Enumeration Date: 08/10/2005
  • Last Update Date: 12/16/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 2163595752
  • Enrollment ID: I20080715000485

Medical Identifiers

Medical identifiers for Mark J Tamsen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346241452NPI-NPPES
00G644000MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine G64400 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Emergency Care Dynamics Inc64068467652

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 J Tamsen allows following entities to bill medicare on his behalf.
Entity NameEmergency Care Dynamics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710989793
PECOS PAC ID: 6406846765
Enrollment ID: O20130208000087

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 J Tamsen 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 J Tamsen, MD
Po Box 370630,
San Diego, CA 92137-0630

Ph: (619) 225-6200
Mark J Tamsen, MD
3434 Midway Dr Ste 1002,
San Diego, CA 92110-4924

Ph: (619) 225-6200

Reviews and Comments


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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.