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

Dr. Marc Jonathan Mellion, DO

Individual provider Diagnostic Radiology Physician · NPI 1669645974

Dr. Marc Jonathan Mellion, DO practises Diagnostic Radiology in Dayton, Ohio. Graduated from Ohio Medical University in 2002, 24 years ago. Practices with University Hospitals Medical Group Inc, a 2,242-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
24
Trained at
Ohio Medical University
Licensed in
OH
In the registry since
2008
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

405 W Grand Ave
Dayton, OH 45405-4720 Not confirmed with CMS for 18 years — call before visiting
Phone: (937) 723-3248
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 34.008478 (OH)

Record details

NPI number1669645974
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 8, 2008
Last updated in NPPESApril 8, 2008

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOHIO MEDICAL UNIVERSITY
Graduated 2002 (24 years in practice)
Group practice University Hospitals Medical Group Inc — 2242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,587
Services billed 2,195 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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.

Food and Beverage $135 6 payments · 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. Those with a page here are linked.

  • Lake Health Hospital · Concord, OH
  • Parma Community General Hospital Hospital · Parma, OH · listed as Parma Community General Hospital Association
  • Uh Cleveland Medical Center Hospital · Cleveland, OH · listed as Cleveland VA Medical Center
  • University Hospitals - Elyria Medical Center Hospital · Elyria, OH
  • University Hospitals Portage Medical Center Hospital · Ravenna, OH

Colleagues at University Hospitals Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2242 clinicians in the practice; 12 are shown here.

Other providers in Dayton