Mark L Ritzinger, OD

Primary specialty

OptometristTaxonomy code 152W00000X

License

1550 035 Issued in WI

Practice address

711 N Main St
River Falls, WI 54022-3502

Phone

(715) 425-7235

Fax

(715) 425-2140

NPI assigned

Oct 13, 2005

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Ritzinger Optometric Clinic SC

  • Optometrist
  • River Falls, WI
  • NPI 1316907835
  NPD (past) Authorized official
• Ritzinger Optometric Clinic SC

  • Optometrist
  • Hudson, WI
  • NPI 1407816929
  NPD (past) Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1129161600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1649268673",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 209",
            "address_2": "711 N MAIN ST",
            "city": "RIVER FALLS",
            "state": "WI",
            "postal_code": "540220209",
            "telephone_number": "715-425-7235",
            "fax_number": "715-425-2140"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "711 N MAIN ST",
            "city": "RIVER FALLS",
            "state": "WI",
            "postal_code": "540223502",
            "telephone_number": "715-425-7235",
            "fax_number": "715-425-2140"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RITZINGER",
        "first_name": "MARK",
        "middle_name": "L",
        "name_prefix": "Dr.",
        "credential": "OD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-13",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "WI",
            "license": "1550 035",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "38562400",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Nora Edith Reid, MS, CCC-SLP
• Teri (Theresa) M Renslow
• Restorative Health Group Inc
• Cheryl Patricia Ritter, OCCUPATIONAL THERAPI
• Ritzinger Optometric Clinic SC
• River Falls CBRF II, LLC
• River Falls CBRF, LLC
• River Falls Chiropractic, Inc
• River Falls Convalescent Center, Inc.
• River Falls Dental Assoc LTD

• Optometrist in River Falls, WI
• Providers in River Falls, WI by specialty
• Optometrist in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.