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Radiation Oncology

Colton J. Ladbury, MD

Sees patients in Duarte, CA · California

Summary

Dr. Colton J. Ladbury, MD is a radiation oncologist at 1500 Duarte Rd, Duarte, CA 91010. Phone: (626) 256-4673. Accepts Medicare assignment. In 2024, Colton J. Ladbury had 62 Original Medicare patients and 519 services. NPI 1891256756. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 1500 Duarte Rd, Duarte, CA 91010 · Directions
  • Phone: (626) 256‑4673
  • Medicare: Accepts Medicare assignment
  • Group practice: City of Hope Medical Foundation
  • Medical school: University Of Colorado School Of Medicine, Aurora · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Colton J. Ladbury, 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 Colton J. Ladbury accept Medicare assignment?
Yes. Medicare's clinician data says Colton J. Ladbury 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 Colton J. Ladbury see?
In 2024, CMS data shows 62 Original Medicare patients and 519 services for Colton J. Ladbury. This counts Original Medicare only and measures volume, not quality.
What is Colton J. Ladbury's NPI number?
1891256756. 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 Colton J. Ladbury, 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 patients62
Services billed to Medicare519
Different services or procedures35
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Ct guidance for insertion of radiation therapy fields (77014)99 services
  2. Calculation of radiation therapy dose (77300)65 services
  3. Design and construction of complex radiation treatment device (77334)46 services
  4. Complex radiation therapy planning (77263)32 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)23 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).

  • High blood pressure75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)73%
  • High cholesterol66%
  • Arthritis31%
  • Ischemic heart disease24%
  • Diabetes21%

Practice locations

Addresses where Colton J. Ladbury is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Colton J. Ladbury as a member of this group (CMS data updated October 2, 2026).

  • City of Hope Medical Foundation982 clinicians in the group

Specialties

Find other Radiation Oncology doctors in California →

Other radiation oncologists in Duarte

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

All radiation oncologists in Duarte →

Other clinicians in City of Hope Medical Foundation

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

Clinician information

CredentialMD
Medical schoolUniversity Of Colorado School Of Medicine, Aurora
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1891256756
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians