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Radiation Oncology

Varun K. Chowdhry, MD

Works at hospitals in Buffalo, NY · Olean, NY · New York

Summary

Dr. Varun K. Chowdhry, MD is a radiation oncologist at 1415 Buffalo St, Olean, NY 14760. Phone: (716) 373-7134. Accepts Medicare assignment. In 2024, Varun K. Chowdhry had 90 Original Medicare patients and 1,019 services. NPI 1023342060. 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.

  • Specialty: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 1415 Buffalo St, Olean, NY 14760 · Directions (3 more locations)
  • Phone: (716) 373‑7134
  • Medicare: Accepts Medicare assignment
  • Hospitals: Kaleida Health, Olean General Hospital
  • Group practice: Roswell Park Cancer Institute (+1 more)
  • Medical school: graduated 2009 (17 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Varun K. Chowdhry, 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 Varun K. Chowdhry accept Medicare assignment?
Yes. Medicare's clinician data says Varun K. Chowdhry 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 Varun K. Chowdhry see?
In 2024, CMS data shows 90 Original Medicare patients and 1,019 services for Varun K. Chowdhry. This counts Original Medicare only and measures volume, not quality.
What is Varun K. Chowdhry's NPI number?
1023342060. 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 Varun K. Chowdhry, 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 patients90
Services billed to Medicare1,019
Different services or procedures35
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)194 services
  2. Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)178 services
  3. Ct guidance for insertion of radiation therapy fields (77014)103 services
  4. Calculation of radiation therapy dose (77300)59 services
  5. Continuing radiation therapy consultation per week (77336)52 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%
  • High cholesterol75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • Arthritis37%
  • Diabetes31%
  • Ischemic heart disease27%

Hospitals where Varun K. Chowdhry works

Medicare's Facility Affiliation Data lists Varun K. Chowdhry 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.

  • Kaleida HealthBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330005
  • Olean General HospitalOlean, NY · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 330103

Practice locations

Addresses where Varun K. Chowdhry is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Varun K. Chowdhry as a member of these groups (CMS data updated October 2, 2026).

  • Roswell Park Cancer Institute488 clinicians in the group
  • Olean General Hospital90 clinicians in the group

Specialties

Find other Radiation Oncology doctors in New York →

Other radiation oncologists in Olean

Clinicians with the same Medicare primary specialty in Olean, NY — not a recommendation.

All radiation oncologists in Olean →

Other clinicians in Roswell Park Cancer Institute

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

Clinician information

CredentialMD
Graduation year2009 (17 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1023342060
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