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

Jon E Mark, OD

Individual provider Optometrist · NPI 1508869942

Jon E Mark, OD is an Optometry in Warsaw, Indiana. Graduated from Indiana University - School of Optometry in 1986, 40 years ago. Practices with Grossnickle Eye Center Inc, a 12-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
40
Trained at
Indiana University - School of Optometry
Licensed in
IN
In the registry since
2005
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

2251 Dubois Dr
Warsaw, IN 46580-3212
Phone: (574) 269-2777
Fax: (574) 371-4697
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 18002230A (IN)

Record details

NPI number1508869942
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMay 31, 2005
Last updated in NPPESJuly 8, 2007
Mailing address2251 Dubois Dr, Warsaw, IN 46580-3212

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolINDIANA UNIVERSITY - SCHOOL OF OPTOMETRY
Graduated 1986 (40 years in practice)
Group practice Grossnickle Eye Center Inc — 12 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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