Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ferdinand J. Korneli, DO

Individual provider Internal Medicine Physician · NPI 1225054943

Ferdinand J. Korneli, DO practises Internal Medicine in Grayling, Michigan. Graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1988, 38 years ago. Practices with Munson Healthcare Grayling, a 64-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
38
Trained at
Des Moines University of Osteopathic Medicine and Health Sciences
Licensed in
MI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1200 W North Down River Rd Ste C
Grayling, MI 49738-8024
Phone: (989) 344-5910
Fax: (231) 935-3463
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1250 E Michigan Ave, Grayling, MI 49738-7074 — (989) 348-0550
  • 1100 E Michigan Ave, Grayling, MI 49738-1312 — (989) 348-5461
  • 1321 S Mount Tom Rd, Mio, MI 48647-9518 — (989) 275-1200

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 5101010337 (MI)

Record details

NPI number1225054943
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESOctober 11, 2026
Certification dateDecember 21, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolDES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated 1988 (38 years in practice)
Group practice Munson Healthcare Grayling — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Education $44 3 payments · educational material or training, not a fee
Food and Beverage $24 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Munson Healthcare Grayling

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 64 clinicians in the practice; 12 are shown here.

Other providers in Grayling