Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Katherine Yah-Ching Lin, DO

Individual provider Internal Medicine Physician · NPI 1427208651

Katherine Yah-Ching Lin, DO is an Internal Medicine in Fontana, California. Qualified in 2007, 19 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2008
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

9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 839-1912
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20A10523 (CA)

Record details

NPI number1427208651
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 24, 2008
Last updated in NPPESOctober 18, 2021
Certification dateOctober 18, 2021
Mailing address21715 Lasso Ln, Walnut, CA 91789-1457

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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