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

David Tseng, DO

Individual provider Hospitalist Physician · NPI 1699200709

David Tseng, DO is an Internal Medicine in San Leandro, California. Qualified in 2017, 9 years ago. Practices with Alameda Health System, a 601-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Licensed in
CA
In the registry since
2017
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

13855 E 14th St
San Leandro, CA 94578-2600
Phone: (510) 357-6500
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20A17261 (CA)
Hospitalist Physician Taxonomy 208M00000X · Licence 20A17261 (CA)

Record details

NPI number1699200709
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 26, 2017
Last updated in NPPESJune 15, 2021
Certification dateJune 15, 2021
Mailing address13855 E 14th St, San Leandro, CA 94578-2611

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Alameda Health System — 601 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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