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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JOHN LEON MARQUARDT M.D.
NPI 1306885918
Ophthalmology in Mansfield, OH

Active since June 06, 2006
466 S TRIMBLE RD, MANSFIELD, OH 44906(419) 756-8000(419) 756-7100 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Leon Marquardt M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN LEON MARQUARDT M.D. (NPI 1306885918) is an individual ophthalmology provider in Mansfield, Ohio, licensed in Ohio (35035303) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1306885918
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameDR. JOHN LEON MARQUARDTCredential: M.D.
Location Address466 S TRIMBLE RDMansfield, OH 44906-3416
Mailing Address466 S Trimble RdMansfield, OH 44906-3416 · (419) 756-8000 · Fax (419) 756-7100
Phone(419) 756-8000
Fax(419) 756-7100
Sole ProprietorNo
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1306885918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in OH · 35035303
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
466 S TRIMBLE RD, Mansfield, OH 44906
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Other Identifiers 5

Other000000128144OH · Anthem Bc/bs
Medicaid0269892OH
Other4277845OH · Aetna
Other0800182OH · United Healthcare
Other341171920001OH · Cigna

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OHIO EYE ASSOCIATES, INC.
Clinic/Center (Ambulatory Surgical)
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
OHIO EYE SURGEONS, INC
Ophthalmology
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
DR. RICHARD E SELSER JR. MD
Ophthalmology
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
DR. JONATHAN M SKARIE M.D., PH.D.
Ophthalmology
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
DR. LISA MING CHUNG M.D.
Ophthalmology
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
DR. RICHARD FOSTER MARQUARDT O.D.
Optometrist
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000
JOBETH ANN FINNEGAN
Hearing Instrument Specialist
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 774-3413
OHIO EYE ASSOCIATES, INC.
Ophthalmology
466 S TRIMBLE RD
MANSFIELD, OH 44906
Richland County (419) 756-8000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Marquardt's NPI number?

The NPI number for John Marquardt is 1306885918. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is John Marquardt located?

John Marquardt practices at 466 S Trimble Rd, Mansfield, OH 44906. The listed phone number is (419) 756-8000.

What is John Marquardt's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

When was this NPI record last updated?

The NPPES record for John Marquardt was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.