KATHLEEN CLAIRE HORST M.D.
NPI 1144385386
Radiology - Radiation Oncology in Stanford, CA

Q: What is Kathleen Horst's NPI number?

The NPI number for Kathleen Horst is 1144385386. It was assigned to this individual provider in the NPPES registry on December 27, 2006.

Q: What is Kathleen Horst's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Kathleen Horst was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.

Active since December 27, 2006PECOS EnrolledAccepts Medicare Assignment

76.5/100

CMS Quality Rating

875 BLAKE WILBUR DR, CC-G221A, STANFORD, CA 94305(650) 736-7715(650) 725-8231 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Kathleen Claire Horst M.d. NPPES

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

KATHLEEN CLAIRE HORST M.D. (NPI 1144385386) is an individual radiation oncology provider in Stanford, California, licensed in California (A72961) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (1999).

NPPES Registry Identity

NPI1144385386

Entity TypeIndividualFemale

Primary Taxonomy2085R0001X

Provider Legal NameKATHLEEN CLAIRE HORSTCredential: M.D.

Location Address875 BLAKE WILBUR DR, CC-G221AStanford, CA 94305

Mailing Address875 Blake Wilbur Dr, Cc-g221aPalo Alto, CA 94304-2205 · (650) 736-7715 · Fax (650) 725-8231

Phone(650) 736-7715

Fax(650) 725-8231

Sole ProprietorNo

Medical School CMSStanford University School Of MedicineGraduated 1999

Enumeration DateDecember 27, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1144385386 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in CA · A72961

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

875 BLAKE WILBUR DR, Stanford, CA 94305

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kathleen Claire Horst M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1951376078

PECOS Enrollment IDI20040831001431

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.

Areas of Expertise CMS Part B claims 15

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

299 services73 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

264 services69 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

162 services68 patients

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

92 services53 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

76 services73 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

67 services56 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

66 services62 patients

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 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

65 services62 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

48 services44 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

39 services19 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

37 services37 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

30 services30 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

21 services17 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

18 services16 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

14 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 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

$206.04 typical visit price

range $70.37 – $206.04

Typical copayment $51.51 (range $17.59 – $51.51)

Most-billed visit code 99205

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.5/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.31

Promoting Interoperability

100

Improvement Activities

Cost

43.95

Other Providers at the Same Location NPPES 10

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

LAURA LYNNE ASARO NP

Nurse Practitioner

875 BLAKE WILBUR DR, CLINIC D
STANFORD, CA 94305

Santa Clara County (650) 723-6197

MS. ANN JOHNSON P.A.-C.

Physician Assistant (Medical)

875 BLAKE WILBUR DR
STANFORD, CA 94305

Santa Clara County (650) 721-5448

DR. SCOTT GERARD SOLTYS MD

Radiology (Radiation Oncology)

875 BLAKE WILBUR DR
STANFORD, CA 94305

Santa Clara County (650) 724-1569

DR. NAM KYOUNG CHO M.D., PH.D.

Radiology (Radiation Oncology)

875 BLAKE WILBUR DR
STANFORD, CA 94305

Santa Clara County (650) 723-6661

DR. BILLY W LOO MD, PHD

Radiology (Radiation Oncology)

875 BLAKE WILBUR DR, STANFORD RADIATION ONCOLOGY
STANFORD, CA 94305

Santa Clara County (650) 736-7143

AMREEN HUSAIN MD

Obstetrics & Gynecology

875 BLAKE WILBUR DR, STANFORD CANCER CENTER
STANFORD, CA 94305

Santa Clara County (408) 885-5000

DR. MICHAEL JAY KAPLAN M.D.

Otolaryngology

875 BLAKE WILBUR DR, CC-2225
STANFORD, CA 94305

Santa Clara County (650) 725-5968

HOWARD EUN LEE MD

Internal Medicine (Medical Oncology)

875 BLAKE WILBUR DR, RM CC2232 MC 6501
STANFORD, CA 94305

Santa Clara County (650) 498-6000

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 Kathleen Horst's NPI number?

The NPI number for Kathleen Horst is 1144385386. It was assigned to this individual provider in the NPPES registry on December 27, 2006.

Where is Kathleen Horst located?

Kathleen Horst practices at 875 Blake Wilbur Dr Cc-G221a, Stanford, CA 94305. The listed phone number is (650) 736-7715.

What is Kathleen Horst's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Kathleen Horst enrolled in Medicare?

Yes. Kathleen Horst is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Kathleen Horst was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.