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Radiation Oncology

Hilary P. Bagshaw, MD

Works at hospitals in Fort Bragg, CA · Monterey, CA · San Luis Obispo, CA … · California

Summary

Dr. Hilary P. Bagshaw, MD is a radiation oncologist at 300 Pasteur Dr, Stanford, CA 94305. Phone: (650) 723-4000. Accepts Medicare assignment. In 2024, Hilary P. Bagshaw had 364 Original Medicare patients and 2,181 services. NPI 1487943916. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Hilary P. Bagshaw, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Hilary P. Bagshaw accept Medicare assignment?
Yes. Medicare's clinician data says Hilary P. Bagshaw accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Hilary P. Bagshaw see?
In 2024, CMS data shows 364 Original Medicare patients and 2,181 services for Hilary P. Bagshaw. This counts Original Medicare only and measures volume, not quality.
What is Hilary P. Bagshaw's NPI number?
1487943916. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Hilary P. Bagshaw, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients364
Services billed to Medicare2,181
Different services or procedures37
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Calculation of radiation therapy dose (77300)471 services
  2. Ct guidance for insertion of radiation therapy fields (77014)464 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)215 services
  4. Radiation treatment management, 5 treatment sessions (77427)137 services
  5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)115 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • High cholesterol74%
  • High blood pressure64%
  • Arthritis33%
  • Ischemic heart disease32%
  • Diabetes21%

Hospitals where Hilary P. Bagshaw works

Medicare's Facility Affiliation Data lists Hilary P. Bagshaw at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Hilary P. Bagshaw is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Hilary P. Bagshaw as a member of this group (CMS data updated October 2, 2026).

  • Stanford Health Care3,122 clinicians in the group

Specialties

Find other Radiation Oncology doctors in California →

Other radiation oncologists in Stanford

Clinicians with the same Medicare primary specialty in Stanford, CA — not a recommendation.

All radiation oncologists in Stanford →

Other clinicians in Stanford Health Care

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolTemple University School Of Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1487943916
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians