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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. MARK L RITZINGER OD
NPI 1649268673
Optometrist in River Falls, WI

Active since October 13, 2005
711 N MAIN ST, RIVER FALLS, WI 54022(715) 425-7235(715) 425-2140 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Mar 7, 2023 (2 updates tracked since 2023).

About Dr. Mark L Ritzinger Od NPPES

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

DR. MARK L RITZINGER OD (NPI 1649268673) is an individual optometrist in River Falls, Wisconsin, licensed in Wisconsin (1550 035) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1649268673
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. MARK L RITZINGERCredential: OD
Location Address711 N MAIN STRiver Falls, WI 54022-3502
Mailing AddressPo Box 209, 711 N Main StRiver Falls, WI 54022-0209 · (715) 425-7235 · Fax (715) 425-2140
Phone(715) 425-7235
Fax(715) 425-2140
Sole ProprietorNo
Enumeration DateOctober 13, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1649268673 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in WI · 1550 035
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
711 N MAIN ST, River Falls, WI 54022
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Other Identifiers 1

Medicaid38562400WI

Other Providers at the Same Location NPPES 2

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

DR. JULIE KNABEL LEE OD
Optometrist
711 N MAIN ST
RIVER FALLS, WI 54022
Pierce County (715) 425-7235
RITZINGER OPTOMETRIC CLINIC SC
Optometrist
711 N MAIN ST
RIVER FALLS, WI 54022
Pierce County (715) 425-7235

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 Mark Ritzinger's NPI number?

The NPI number for Mark Ritzinger is 1649268673. It was assigned to this individual provider in the NPPES registry on October 13, 2005.

Where is Mark Ritzinger located?

Mark Ritzinger practices at 711 N Main St, River Falls, WI 54022. The listed phone number is (715) 425-7235.

What is Mark Ritzinger's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

When was this NPI record last updated?

The NPPES record for Mark Ritzinger was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.