Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jon E Mark, O.D.
Optometrist in Warsaw, IN · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508869942
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Registry record
Entity type Individual (Type 1)
Name Jon E Mark
Credential O.D.
Sex Male
Practice address 2251 Dubois Dr, Warsaw, IN, 46580
Phone (574) 269-2777
Fax (574) 371-4697
Enumeration date May 31, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Jon Mark?
The National Provider Identifier (NPI) for Jon Mark is 1508869942, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jon Mark practice?
The practice location on file with NPPES is in Warsaw, IN. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → David Ryser Ophthalmology Physician · Warsaw, IN NPI 1528061363 Christopher Knight Ophthalmology Physician · Warsaw, IN NPI 1659374205 Kevin Hickman Optometrist · Warsaw, IN NPI 1609879030 Bruce Grossnickle Ophthalmology Physician · Warsaw, IN NPI 1518960921 Dennis Miller Optometrist · Warsaw, IN NPI 1003819442 Grossnickle Eye Center, Inc. Ophthalmology Physician · Warsaw, IN NPI 1265436125 Ann Buikema Wiarda Ophthalmology Physician · Warsaw, IN NPI 1538146246 Kathleen Snyder Certified Registered Nurse Anesthetist · Warsaw, IN NPI 1679525927
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.