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Anesthesiology

Breeana J. Johng, MD

Works at hospitals in Germantown, MD · Silver Spring, MD · Maryland

Summary

Dr. Breeana J. Johng, MD is an anesthesiologist at 11210 Old Georgetown Rd, Rockville, MD 20852. Phone: (301) 881-7770. Accepts Medicare assignment. NPI 1366016347. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 11210 Old Georgetown Rd, Rockville, MD 20852 · Directions (2 more locations)
  • Phone: (301) 881‑7770
  • Medicare: Accepts Medicare assignment
  • Hospitals: Holy Cross Germantown Hospital, Holy Cross Hospital
  • Group practice: First Colonies Anesthesia Associates, LLC
  • Medical school: George Washington University School Of Medicine · graduated 2021 (5 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Breeana J. Johng, 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 Breeana J. Johng accept Medicare assignment?
Yes. Medicare's clinician data says Breeana J. Johng 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.
What is Breeana J. Johng's NPI number?
1366016347. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Breeana J. Johng works

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

Group practices

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

  • First Colonies Anesthesia Associates, LLC326 clinicians in the group

Specialties

Find other Anesthesiology doctors in Maryland →

Other anesthesiologists in Rockville

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

All anesthesiologists in Rockville →

Other clinicians in First Colonies Anesthesia Associates, LLC

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

Clinician information

CredentialMD
Medical schoolGeorge Washington University School Of Medicine
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1366016347
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians