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Medical Oncology

Gabriel Ghiaur, MD

Works at hospitals in Baltimore, MD · Maryland

Summary

Dr. Gabriel Ghiaur, MD is an oncologist at 5755 Cedar Ln, Columbia, MD 21044. Phone: (410) 502-4340. May accept Medicare assignment. In 2024, Gabriel Ghiaur had 57 Original Medicare patients and 242 services. NPI 1427172865. 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: Oncologist (Medicare lists Medical Oncology)
  • Address: 5755 Cedar Ln, Columbia, MD 21044 · Directions (4 more locations)
  • Phone: (410) 502‑4340
  • Medicare: May accept Medicare assignment
  • Hospital: The Johns Hopkins Hospital
  • Group practice: Johns Hopkins University
  • Medical school: graduated 2001 (25 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Gabriel Ghiaur, 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 Gabriel Ghiaur accept Medicare assignment?
Medicare's clinician data says Gabriel Ghiaur may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Gabriel Ghiaur see?
In 2024, CMS data shows 57 Original Medicare patients and 242 services for Gabriel Ghiaur. This counts Original Medicare only and measures volume, not quality.
What is Gabriel Ghiaur's NPI number?
1427172865. 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 Gabriel Ghiaur, 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 patients57
Services billed to Medicare242
Different services or procedures7
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)169 services
  2. Bone marrow, smear interpretation (85097)30 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)14 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 cholesterol75%
  • High blood pressure74%
  • Arthritis49%
  • Depression32%
  • Anxiety32%
  • Chronic kidney disease28%

Hospitals where Gabriel Ghiaur works

Medicare's Facility Affiliation Data lists Gabriel Ghiaur 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 Gabriel Ghiaur is enrolled with Medicare (CMS data updated October 2, 2026).

  • 5755 Cedar LnColumbia, MD 21044
  • 5759 Cedar LnColumbia, MD 21044
  • 600 N Wolf StBaltimore, MD 21287
  • 600 N Wolfe St, Blalock 266Baltimore, MD 21287 (410) 502‑4340
  • 6201 Greenleigh AveMiddle River, MD 21220

Group practices

Medicare enrollment lists Gabriel Ghiaur as a member of this group (CMS data updated October 2, 2026).

  • Johns Hopkins University2,909 clinicians in the group

Specialties

Find other Medical Oncology doctors in Maryland →

Other oncologists in Columbia

Clinicians with the same Medicare primary specialty in Columbia, MD — not a recommendation.

All oncologists in Columbia →

Other clinicians in Johns Hopkins University

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1427172865
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