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

Dr. James Harkless Duncan, DO

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1235216847

Dr. James Harkless Duncan, DO is a Family Practice in West Portsmouth, Ohio. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1976, 50 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
50
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
OH
In the registry since
2006
Specialties on file
2
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

22442 State Route 73
West Portsmouth, OH 45663-6365
Phone: (740) 858-6656
Fax: (740) 858-5413
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 34-00-2558 (OH)
Addiction Medicine (Family Medicine) Physician Taxonomy 207QA0401X · Licence 34002558 (OH)

Record details

NPI number1235216847
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedNovember 1, 2006
Last updated in NPPESSeptember 11, 2018

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1976 (50 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare