Doctor profile · Federal record

Dr. Kathleen Horst, M.D.

Radiation Oncology Physician (CMS: Radiation Oncology) · Stanford, CA

  • NPI 1144385386
  • Accepts Medicare
  • MIPS 75.5 / 100 · 2023
  • 27 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
875 Blake Wilbur Dr, Cc-G221A
Stanford, CA 94305
(650) 736-7715
fax (650) 725-8231
Mailing address
875 Blake Wilbur Dr, Cc-G221A
Palo Alto, CA 943042205

Credentials & registration

NPPES · NUCC
NPI registered
December 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State license (1)
California #A72961

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144385386. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,099
Distinct HCPCS
10
Medicare allowed
$106,777
HCPCS Description Services Patients Avg allowed
77334 Design and construction of complex radiation treatment device 250 54 $72
77300 Calculation of radiation therapy dose 212 51 $39
77427 Radiation treatment management, 5 treatment sessions 122 57 $223
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 95 31 $24
99212 Established patient office or other outpatient visit, 10-19 minutes 59 52 $41
77263 Complex radiation therapy planning 55 52 $197
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 51 44 $45
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 51 47 $98
77295 3d radiation therapy planning 49 47 $269
99204 New patient office or other outpatient visit, 45-59 minutes 39 39 $153

In context: peer comparison

Among 12 peers in Stanford Radiation Oncology Physician, average services per provider: 76. This provider delivers 14× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Kathleen Horst's medical specialty?
Dr. Kathleen Horst practices Radiation Oncology Physician in Stanford, CA.
Where does Dr. Kathleen Horst practice?
Dr. Kathleen Horst practices at 875 Blake Wilbur Dr, Stanford, CA 94305. Office phone: 6507367715.
What is Dr. Kathleen Horst's NPI?
Dr. Kathleen Horst's National Provider Identifier (NPI) is 1144385386, issued by NPPES.
Does Dr. Kathleen Horst accept Medicare assignment?
Yes. Dr. Kathleen Horst accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kathleen Horst commonly perform?
Top Medicare-reported procedures in 2023: Design and construction of complex radiation treatment device (HCPCS 77334); Calculation of radiation therapy dose (HCPCS 77300); Radiation treatment management, 5 treatment sessions (HCPCS 77427). Source: CMS Medicare Physician & Other Practitioners file.