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

Internal Medicine

Ferdinand J. Korneli, DO

Works at hospitals in Kalkaska, MI · Cadillac, MI · Grayling, MI … · Michigan

Summary

Dr. Ferdinand J. Korneli, DO is an internal medicine doctor at 1010 W N Down River Rd, Munson Healthcare Grayling Physician Networ, Grayling, MI 49738. Phone: (231) 876-7476. Accepts Medicare assignment. NPI 1225054943. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about Ferdinand J. Korneli, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ferdinand J. Korneli accept Medicare assignment?
Yes. Medicare's clinician data says Ferdinand J. Korneli accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Ferdinand J. Korneli's NPI number?
1225054943. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Ferdinand J. Korneli works

Medicare's Facility Affiliation Data lists Ferdinand J. Korneli at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Ferdinand J. Korneli is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Ferdinand J. Korneli as a member of this group (CMS data updated October 2, 2026).

  • Munson Healthcare Grayling66 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Grayling

Clinicians with the same Medicare primary specialty in Grayling, MI — not a recommendation.

All internal medicine doctors in Grayling →

Other clinicians in Munson Healthcare Grayling

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolDes Moines University Of Osteopathic Medicine And Health Sciences
Graduation year1988 (38 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1225054943
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians