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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KATHERINE MATTSON HALPER MD
NPI 1669112413
Hospitalist in Los Angeles, CA

Active since March 30, 2022PECOS Enrolled
757 WESTWOOD PLZ STE 7501, LOS ANGELES, CA 90095(310) 267-9643(310) 267-3840 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Katherine Mattson Halper Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE MATTSON HALPER MD (NPI 1669112413) is an individual hospitalist provider in Los Angeles, California, licensed in California (A190864) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2022).

NPPES Registry Identity

NPI1669112413
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameKATHERINE MATTSON HALPERCredential: MD
Location Address757 WESTWOOD PLZ STE 7501Los Angeles, CA 90095-7419
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631
Phone(310) 267-9643
Fax(310) 267-3840
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2022
Enumeration DateMarch 30, 2022
Last NPPES UpdateJuly 9, 2026
NPPES CertifiedJuly 9, 2026
✔ NPI 1669112413 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CA · A190864
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License A190864 (CA)
757 WESTWOOD PLZ STE 7501, Los Angeles, CA 90095
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Mattson Halper Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4486127552
PECOS Enrollment IDI20260622001295
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90095 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ATHEER A RAZZOUK MD
Internal Medicine
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 825-7375
SHIRA MATI PERESS MD
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 267-9643
COREY MORDAS
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 267-9643
JARRED REED MD
Internal Medicine
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 825-8307
DR. RENEE LAKSHMI RAO MD
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 319-4698
DR. RAMSES CESAR DELGADILLO MD
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 267-9643
DANIEL ABRAHAM CANCILLA
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 267-9643
DR. CHRISTIAN JAMES PEOPLES MD
Hospitalist
757 WESTWOOD PLZ STE 7501
LOS ANGELES, CA 90095
Los Angeles County (310) 267-9643

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Halper's NPI number?

The NPI number for Katherine Halper is 1669112413. It was assigned to this individual provider in the NPPES registry on March 30, 2022.

Where is Katherine Halper located?

Katherine Halper practices at 757 Westwood Plz Ste 7501, Los Angeles, CA 90095. The listed phone number is (310) 267-9643.

What is Katherine Halper's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Katherine Halper enrolled in Medicare?

Yes. Katherine Halper is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Katherine Halper was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.