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

Dr. Lillian Tseng, MD

Individual provider Internal Medicine Physician · NPI 1619016169

Dr. Lillian Tseng, MD is an Internal Medicine in Walnut Creek, California. Graduated from Vanderbilt University School of Medicine in 2004, 22 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
22
Trained at
Vanderbilt University School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1515 Newell Ave
Walnut Creek, CA 94596-5120
Phone: (925) 295-4000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A92629 (CA)

Record details

NPI number1619016169
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 5, 2007
Last updated in NPPESDecember 13, 2021
Mailing address1515 Newell Ave, Walnut Creek, CA 94596-5120

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCRITICAL CARE (INTENSIVISTS), PULMONARY DISEASE
Medical schoolVANDERBILT UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Walnut Creek