Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Yong-Yong Tam, MD

Individual provider Emergency Medicine Physician · NPI 1831150853

Dr. Yong-Yong Tam, MD practises Emergency Medicine in Alameda, California. Graduated from Harvard Medical School in 1976, 50 years ago. Practices with Alameda Health System, a 601-clinician group and accepts Medicare assignment. Licensed in California and Massachusetts.

Years since qualifying
50
Trained at
Harvard Medical School
Licensed in
CA, MA
In the registry since
2006
Specialties on file
2
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

2070 Clinton Ave Alameda Hospital
Alameda, CA 94501-4399
Phone: (510) 482-0558
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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 G34363 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 41264 (MA)

Record details

NPI number1831150853
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2006
Last updated in NPPESJanuary 12, 2018

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1976 (50 years in practice)
Group practice Alameda Health System — 601 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients249
Services billed 302 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Alameda Hospital Hospital · Alameda, CA · listed as City of Alameda Health Care District
  • El Camino Health Hospital · Mountain View, CA

Colleagues at Alameda Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 601 clinicians in the practice; 12 are shown here.

Other providers in Alameda