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Internal Medicine

Joseph Muller, MD

Sees patients in Washington, DC · District of Columbia

Summary

Joseph Muller, MD (Internal Medicine) is enrolled with Medicare at 3 practice locations in Washington, DC. NPI 1033505342. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(202) 388‑7891 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Joseph Muller, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

3Practice locations
Internal MedicinePrimary specialty
YesAccepts Medicare assignment
11Years since medical school (graduated 2015)
MaleGender (as listed)
Unity Health Care Inc.Group practice

Quick answers

Where does Joseph Muller see patients?
Medicare's clinician data lists 3 practice locations, including Washington, DC. Call before your visit to confirm the address.
What is Joseph Muller's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Joseph Muller accept Medicare assignment?
Yes. Medicare's clinician data says Joseph Muller accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Joseph Muller?
(202) 388-7891, as listed in official Medicare / NPI Registry data.
What is Joseph Muller's NPI number?
1033505342. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Joseph Muller is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Joseph Muller as a member of this group (CMS data updated 2026-10-02).

  • Unity Health Care Inc.151 clinicians in the group

Specialties

Find other Internal Medicine doctors in District of Columbia →

Other internal medicine doctors in Washington

Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.

All internal medicine doctors in Washington →

Clinician information

CredentialMD
Graduation year2015
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1033505342
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians