Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. James Hsiao, MD

Individual provider Emergency Medicine Physician · NPI 1306022959

Dr. James Hsiao, MD practises Emergency Medicine in LA Mesa, California. Graduated from University of Maryland School of Medicine in 2004, 22 years ago. Practices with Team Physicians of Northern California Medical Group Inc, a 87-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
22
Trained at
University of Maryland School of Medicine
Licensed in
CA, NY
In the registry since
2008
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

5555 Grossmont Center Dr
LA Mesa, CA 91942-3019 Not confirmed with CMS for 17 years — call before visiting
Phone: (410) 206-6613
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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 A104525 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 239509 (NY)

Record details

NPI number1306022959
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 14, 2008
Last updated in NPPESNovember 25, 2008

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Team Physicians Of Northern California Medical Group Inc — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients657
Services billed 1,073 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Team Physicians of Northern California Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 87 clinicians in the practice; 12 are shown here.

Other providers in LA Mesa