Clinicians affiliated with Grossnickle Eye Center Inc

12 clinicians on file with this group · most practice in Warsaw, IN · PAC ID 7810897758

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

12 clinicians affiliated with Grossnickle Eye Center Inc are in the 2024 Medicare Part B data, 6 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Ophthalmology (6) · Optometry (6)

Specialty links go to the specialty in Warsaw, IN.

Clinicians affiliated with Grossnickle Eye Center Inc, 2024

Alphabetical by last name; 12.

NameSpecialtyCity
Christian M Briggs, MDOphthalmologyMuncie, IN
Ann K Buikema Wiarda, MDOphthalmologyWarsaw, IN
Kevin R Hickman, O.D.OptometryWarsaw, IN
Andrew P JankowskiOptometryWarsaw, IN
Christopher D Knight, M.D.OphthalmologyWarsaw, IN
Patrick M Korman, ODOptometryMishawaka, IN
Ann U Madden, ODOptometryWarsaw, IN
Jon E Mark, O.D.OptometryWarsaw, IN
Allison A Pernic, M.D.OphthalmologyWarsaw, IN
Matthew C Ralstin, M.D.OphthalmologyWarsaw, IN
Colin M Ridenour, MDOphthalmologyWarsaw, IN
Gregory F Zink, O.D.OptometryFort Wayne, IN

Practice locations

Listed practice locations in Indiana.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations