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

Jonathon K Nicholson, MD

Individual provider Adolescent Medicine (Internal Medicine) Physician · NPI 1538167572

Jonathon K Nicholson, MD is a Pediatric Medicine in Defiance, Ohio. Graduated from Medical College of Ohio in 2002, 24 years ago. Licensed in Michigan and Ohio.

Years since qualifying
24
Trained at
Medical College of Ohio
Licensed in
MI, OH
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1400 E 2nd St Ste 100
Defiance, OH 43512-9905
Phone: (419) 783-3226
Show map & directions

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

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 4301104162 (MI)
Adolescent Medicine (Internal Medicine) Physician Taxonomy 207RA0000X · Licence 35080078 (OH)

Record details

NPI number1538167572
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2005
Last updated in NPPESFebruary 28, 2023
Certification dateFebruary 28, 2023
Mailing address1400 E 2nd St Ste 100, Defiance, OH 43512-9905

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolMEDICAL COLLEGE OF OHIO
Graduated 2002 (24 years in practice)
Accepts Medicare assignment Not indicated