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Internal Medicine

Ellis A. Johnson, MD

Works at hospitals in Portland, ME · Maine

Summary

Ellis A. Johnson, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Portland, ME. NPI 1215196985. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Ellis A. Johnson, 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
18Years since medical school (graduated 2008)
MaleGender (as listed)
MaineHealthGroup practice

Quick answers

Which hospitals does Ellis A. Johnson work at?
Medicare's official clinician data lists Ellis A. Johnson at 2 hospitals: MaineHealth Maine Medical Center and Northern Light Mercy Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Ellis A. Johnson see patients?
Medicare's clinician data lists 2 practice locations, including Westbrook, ME and Portland, ME. Call before your visit to confirm the address.
What is Ellis A. Johnson's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Ellis A. Johnson accept Medicare assignment?
Yes. Medicare's clinician data says Ellis A. Johnson 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 Ellis A. Johnson offer telehealth?
Medicare's clinician data says Ellis A. Johnson offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Ellis A. Johnson?
(207) 662-1360, as listed in official Medicare / NPI Registry data.
What is Ellis A. Johnson's NPI number?
1215196985. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Ellis A. Johnson works

Medicare's Facility Affiliation Data lists Ellis A. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Ellis A. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Ellis A. Johnson as a member of this group (CMS data updated 2026-10-02).

  • MaineHealth2,633 clinicians in the group

Specialties

Find other Internal Medicine doctors in Maine →

Other internal medicine doctors in Westbrook

Clinicians with the same Medicare primary specialty in Westbrook, ME — not a recommendation.

All internal medicine doctors in Westbrook →

Clinician information

CredentialMD
Graduation year2008
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1215196985
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians