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

Dr. Kasey SIU, DO

Individual provider Internal Medicine Physician · NPI 1447811559

Dr. Kasey SIU, DO is an Internal Medicine in Downey, California. Qualified in 2019, 7 years ago. Practices with PIH Health Physicians, a 614-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2019
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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

11500 Brookshire Ave
Downey, CA 90241-4917
Phone: (562) 904-5000
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 20A20152 (CA)

Record details

NPI number1447811559
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 28, 2019
Last updated in NPPESOctober 10, 2025
Certification dateOctober 10, 2025
Mailing address11500 Brookshire Ave, Downey, CA 90241-4917

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Pih Health Physicians — 614 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Downey