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Radiation Oncology

Byung-Han Rhieu, MD

Works at hospitals in Bronx, NY · Nyack, NY · New York

Summary

Dr. Byung-Han Rhieu, MD is a radiation oncologist at 111 E 210th St, Bronx, NY 10467. May accept Medicare assignment. In 2024, Byung-Han Rhieu had 128 Original Medicare patients and 1,305 services. NPI 1851788772. 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: 111 E 210th St, Bronx, NY 10467 · Directions
  • Medicare: May accept Medicare assignment
  • Hospitals: Montefiore Medical Center, Nyack Hospital
  • Group practice: Montefiore Medical Center
  • Medical school: University Of Pittsburgh School Of Medicine · graduated 2015 (11 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 Byung-Han Rhieu, 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 Byung-Han Rhieu accept Medicare assignment?
Medicare's clinician data says Byung-Han Rhieu may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Byung-Han Rhieu see?
In 2024, CMS data shows 128 Original Medicare patients and 1,305 services for Byung-Han Rhieu. This counts Original Medicare only and measures volume, not quality.
What is Byung-Han Rhieu's NPI number?
1851788772. 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 Byung-Han Rhieu, 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 patients128
Services billed to Medicare1,305
Different services or procedures28
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Calculation of radiation therapy dose (77300)357 services
  2. Ct guidance for insertion of radiation therapy fields (77014)260 services
  3. Design and construction of complex radiation treatment device (77334)165 services
  4. Radiation treatment management, 5 treatment sessions (77427)57 services
  5. Complex radiation therapy planning (77263)43 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 cholesterol66%
  • High blood pressure63%
  • Arthritis28%
  • Diabetes19%
  • Ischemic heart disease19%

Hospitals where Byung-Han Rhieu works

Medicare's Facility Affiliation Data lists Byung-Han Rhieu 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.

  • Montefiore Medical CenterBronx, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330059
  • Nyack HospitalNyack, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330104

Practice locations

Addresses where Byung-Han Rhieu is enrolled with Medicare (CMS data updated October 2, 2026).

  • 111 E 210th StBronx, NY 10467

Group practices

Medicare enrollment lists Byung-Han Rhieu as a member of this group (CMS data updated October 2, 2026).

  • Montefiore Medical Center2,820 clinicians in the group

Specialties

Find other Radiation Oncology doctors in New York →

Other radiation oncologists in Bronx

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

All radiation oncologists in Bronx →

Other clinicians in Montefiore Medical Center

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

Clinician information

CredentialMD
Medical schoolUniversity Of Pittsburgh School Of Medicine
Graduation year2015 (11 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1851788772
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