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Internal Medicine

Jon C. Older, DO

Works at hospitals in Houlton, ME · Bar Harbor, ME · Bangor, ME · Maine

Summary

Jon C. Older, DO (Internal Medicine) is listed by Medicare at 3 hospitals in Houlton, ME, Bar Harbor, ME and Bangor, ME. NPI 1073582128. 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 Jon C. Older, 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
30Years since medical school (graduated 1996)
University Of New England, College Of Osteo MedicineMedical school
MaleGender (as listed)
Mount Desert Island HospitalGroup practice (+1 more)

Quick answers

Which hospitals does Jon C. Older work at?
Medicare's official clinician data lists Jon C. Older at 3 hospitals: Houlton Regional Hospital, Mount Desert Island Hospital and Northern Light Eastern Maine Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Jon C. Older see patients?
Medicare's clinician data lists 2 practice locations, including Bar Harbor, ME and Houlton, ME. Call before your visit to confirm the address.
What is Jon C. Older's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Jon C. Older accept Medicare assignment?
Yes. Medicare's clinician data says Jon C. Older 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 Jon C. Older?
(207) 288-5081, as listed in official Medicare / NPI Registry data.
What is Jon C. Older's NPI number?
1073582128. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Jon C. Older works

Medicare's Facility Affiliation Data lists Jon C. Older 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 Jon C. Older is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Jon C. Older as a member of these groups (CMS data updated 2026-10-02).

  • Mount Desert Island Hospital65 clinicians in the group
  • Houlton Regional Hospital60 clinicians in the group

Specialties

Find other Internal Medicine doctors in Maine →

Other internal medicine doctors in Bar Harbor

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

All internal medicine doctors in Bar Harbor →

Clinician information

CredentialDO
Medical schoolUniversity Of New England, College Of Osteo Medicine
Graduation year1996
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1073582128
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