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

Katherine Mattson Halper, MD

Individual provider Internal Medicine Physician · NPI 1669112413

Katherine Mattson Halper, MD is a Hospitalist in Los Angeles, California. Graduated from University of Southern California Keck School of Medicine in 2022, 4 years ago. Licensed in California.

Years since qualifying
4
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA
In the registry since
2022
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

757 Westwood Plz Ste 7501
Los Angeles, CA 90095-7419
Phone: (310) 267-9643
Fax: (310) 267-3840
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A190864 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A190864 (CA)

Record details

NPI number1669112413
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2022
Last updated in NPPESJuly 9, 2026
Certification dateJuly 9, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE, PEDIATRIC MEDICINE
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Accepts Medicare assignment Not indicated

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