Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Michael R Donnally, MD

Individual provider Cardiovascular Disease Physician · NPI 1245359520

Michael R Donnally, MD is a Cardiovascular Disease (Cardiology) in Marysville, Ohio. Graduated from University of Toledo College of Medicine in 2004, 22 years ago. Practices with Osu Internal Medicine LLC, a 1,145-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
22
Trained at
University of Toledo College of Medicine
Licensed in
OH
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

500 London Ave
Marysville, OH 43040-3570
Phone: (937) 642-5490
Fax: (937) 578-2800
Show map & directions

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

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 35.089324 (OH)

Record details

NPI number1245359520
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2007
Last updated in NPPESApril 30, 2026
Certification dateApril 30, 2026
Mailing address700 Ackerman Rd Ste 2120, Columbus, OH 43202-1559

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TOLEDO COLLEGE OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Osu Internal Medicine Llc — 1145 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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