Dr. Dennis K Ryan , MD
Ophthalmology • La Crosse, WI
Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. Dennis Ryan has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. Dennis Ryan, MD was a registered Ophthalmology practicing in La Crosse, WI. Throughout an active medical career spanning 21 years, Dr. Ryan provided care at the practice location at 1836 SOUTH AVE until profile deactivation on 2026-07-30.
Practice Location & Contact Primary Location
1836 South Ave
La Crosse, WI 546015429
Specialty Benchmarks & Practice Insights
Comparative analytics for Ophthalmology in La Crosse, WI
Practicing in La Crosse, WI (464 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 207W00000X
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.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Psychologist
Doctor of Psychology (Psy.D.)
Surgery
Nurse Practitioner - Adult Health
Advanced Practice Nurse Prescriber
Orthopaedic Surgery
Registered Nurse - Addiction (Substance Use Disorder)
Registered Nurse
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on July 30, 2026
NPI status registered as active in NPPES database
Registered at 1836 SOUTH AVE, LA CROSSE, WI 546015429 (Tel: 6087827300)
Registered at 1836 SOUTH AVE, LA CROSSE, WI 546015429 (Tel: 6087827300)
Recorded as DENNIS RYAN, MD
Ophthalmology (License #19157 in WI)
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
1836 South Ave
La Crosse, WI 546015429
Phone: 6087827300
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