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Internal Medicine

Brendan G. Henderson, MD

Works at hospitals in Frederick, MD · Maryland

Summary

Dr. Brendan G. Henderson, MD is an internal medicine doctor at 187 Thomas Johnson Dr, Frederick, MD 21702. Accepts Medicare assignment. NPI 1679749923. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 187 Thomas Johnson Dr, Frederick, MD 21702 · Directions (1 more location)
  • Medicare: Accepts Medicare assignment
  • Hospital: Frederick Health Hospital
  • Group practice: Amber Hill Physical Therapy Inc
  • Medical school: Virginia Commonwealth University, School Of Medicine · graduated 2006 (20 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Brendan G. Henderson, 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 Brendan G. Henderson accept Medicare assignment?
Yes. Medicare's clinician data says Brendan G. Henderson 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 Brendan G. Henderson's NPI number?
1679749923. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brendan G. Henderson works

Medicare's Facility Affiliation Data lists Brendan G. Henderson 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.

  • Frederick Health HospitalFrederick, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210005

Practice locations

Addresses where Brendan G. Henderson is enrolled with Medicare (CMS data updated October 2, 2026).

  • 187 Thomas Johnson DrFrederick, MD 21702
  • 187 Thomas Johnson Dr, Suite 6Frederick, MD 21702

Group practices

Medicare enrollment lists Brendan G. Henderson as a member of this group (CMS data updated October 2, 2026).

  • Amber Hill Physical Therapy Inc334 clinicians in the group

Specialties

Find other Internal Medicine doctors in Maryland →

Other internal medicine doctors in Frederick

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

All internal medicine doctors in Frederick →

Other clinicians in Amber Hill Physical Therapy Inc

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

Clinician information

CredentialMD
Medical schoolVirginia Commonwealth University, School Of Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1679749923
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