Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mark J Tamsen, MD

Individual provider Emergency Medicine Physician · NPI 1346241452

Mark J Tamsen, MD is an Emergency Medicine in San Diego, California. Graduated from University of Arizona College of Medicine in 1979, 47 years ago. Practices with Emergency Care Dynamics Inc, a 2-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
47
Trained at
University of Arizona College of Medicine
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3434 Midway Dr Ste 1002
San Diego, CA 92110-4924
Phone: (619) 225-6200
Fax: (619) 225-6208
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G64400 (CA)

Record details

NPI number1346241452
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 10, 2005
Last updated in NPPESDecember 16, 2020
Certification dateDecember 16, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Emergency Care Dynamics Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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