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

Dr. Kenneth W. Lien, MD

Individual provider Allergy Physician · NPI 1396823092

Dr. Kenneth W. Lien, MD is an Allergy/Immunology in Castro Valley, California. Graduated from University of Chicago, Pritzker School of Medicine in 1998, 28 years ago. Accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
28
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

20400 Lake Chabot Rd Ste 304
Castro Valley, CA 94546-5316
Phone: (510) 537-0700
Fax: (510) 537-7795
Show map & directions

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

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence A72098 (CA)

Record details

NPI number1396823092
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 1, 2006
Last updated in NPPESFebruary 3, 2014
Mailing address20400 Lake Chabot Rd Ste 304, Ste. 304, Castro Valley, CA 94546-5316

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Castro Valley