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

Individual provider Ophthalmology Physician · NPI 1306885918

Dr. John Leon Marquardt, MD is an Ophthalmology Physician in Mansfield, Ohio. Licensed in Ohio. Registered with an NPI since 2006.

Licensed in
OH
In the registry since
2006
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

466 S Trimble Rd
Mansfield, OH 44906-3416
Phone: (419) 756-8000
Fax: (419) 756-7100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 35035303 (OH)

Record details

NPI number1306885918
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESJuly 13, 2026

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