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

Dr. John Duffy Dewalt, DO

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1508869702

Dr. John Duffy Dewalt, DO is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Logan, Ohio. Practices as a sole proprietor. Licensed in Ohio.

Licensed in
OH
In the registry since
2005
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 →

Practice location Address checks out

144 E Main St
Logan, OH 43138
Phone: (740) 385-1881
Fax: (740) 385-1875
Show map & directions

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

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 34002686D (OH)

Record details

NPI number1508869702
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 23, 2005
Last updated in NPPESJanuary 13, 2016
Mailing address144 E Main St, Logan, OH 43138