Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Robert E. Ferris, DO

Sees patients in Washington, DC · Laurel, MD · District of Columbia, Maryland

Summary

Robert E. Ferris, DO (Internal Medicine) is enrolled with Medicare at 2 practice locations in Washington, DC and Laurel, MD. NPI 1144590415. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Robert E. Ferris, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
34Years since medical school (graduated 1992)
MaleGender (as listed)
MedStar Medical Group II LLCGroup practice

Quick answers

Where does Robert E. Ferris see patients?
Medicare's clinician data lists 2 practice locations, including Washington, DC and Laurel, MD. Call before your visit to confirm the address.
What is Robert E. Ferris's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Robert E. Ferris accept Medicare assignment?
Yes. Medicare's clinician data says Robert E. Ferris 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.
Does Robert E. Ferris offer telehealth?
Medicare's clinician data says Robert E. Ferris offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Robert E. Ferris?
(202) 429-2401, as listed in official Medicare / NPI Registry data.
What is Robert E. Ferris's NPI number?
1144590415. 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 Robert E. Ferris is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Robert E. Ferris as a member of this group (CMS data updated 2026-10-02).

  • MedStar Medical Group II LLC3,767 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

CredentialDO
Graduation year1992
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1144590415
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