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

Dr. Janet Griffith Marnejon, DO

Individual provider Adult Medicine Physician · NPI 1114003001

Dr. Janet Griffith Marnejon, DO is an Adult Medicine Physician in Columbiana, Ohio. Licensed in Ohio. Registered with an NPI since 2006.

Licensed in
OH
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 →

Practice location Address checks out

225 E State Route 14 Ste 102
Columbiana, OH 44408-8490
Phone: (330) 482-2903
Fax: (330) 482-3690
Show map & directions

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

Specialties & licences

Adult Medicine Physician (primary) Taxonomy 207QA0505X · Licence 34.004937 (OH)

Record details

NPI number1114003001
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 31, 2006
Last updated in NPPESOctober 25, 2016
Mailing address225 E State Route 14, Ste 102, Columbiana, OH 44408-8490