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

Family Practice

Greg T. Harmston, MD

Works at hospitals in Freeport, IL · Galena, IL · Illinois

Summary

Greg T. Harmston, MD (Family Practice) is listed by Medicare at 2 hospitals in Freeport, IL and Galena, IL. NPI 1679549877. 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 Greg T. Harmston, 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

Family PracticePrimary specialty
YesAccepts Medicare assignment
30Years since medical school (graduated 1996)
Southern Illinois University School Of MedicineMedical school
MaleGender (as listed)
Midwest Medical CenterGroup practice

Quick answers

Which hospitals does Greg T. Harmston work at?
Medicare's official clinician data lists Greg T. Harmston at 2 hospitals: FHN Memorial Hospital and Midwest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Greg T. Harmston see patients?
Medicare's clinician data lists 1 practice location in Galena, IL. Call before your visit to confirm the address.
What is Greg T. Harmston's specialty?
Medicare lists Family Practice as the primary specialty.
Does Greg T. Harmston accept Medicare assignment?
Yes. Medicare's clinician data says Greg T. Harmston 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 Greg T. Harmston?
(815) 777-1340, as listed in official Medicare / NPI Registry data.
What is Greg T. Harmston's NPI number?
1679549877. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Greg T. Harmston works

Medicare's Facility Affiliation Data lists Greg T. Harmston 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 Greg T. Harmston is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Greg T. Harmston as a member of this group (CMS data updated 2026-10-02).

  • Midwest Medical Center36 clinicians in the group

Specialties

Find other Family Practice doctors in Illinois →

Other family doctors in Galena

Clinicians with the same Medicare primary specialty in Galena, IL — not a recommendation.

All family doctors in Galena →

Clinician information

CredentialMD
Medical schoolSouthern Illinois University School Of Medicine
Graduation year1996
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1679549877
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