Robert C McMahon, OD

Primary specialty

OptometristTaxonomy code 152W00000X

License

1471 Issued in MN

Practice address

106 E 2ND St
Winona, MN 55987-3410

Phone

(507) 454-4640

NPI assigned

May 25, 2006

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.

• Gundersen Clinic LTD

  • Clinic/Center
  • La Crosse, WI
  • NPI 1851343115
  NPD (past)
• Gundersen Lutheran Express Care, Inc

  • Clinic/Center
  • La Crosse, WI
  • NPI 1043446974
  NPD (past)
• Gundersen Lutheran Medical Center, Inc.

  • Community Based Hospice Care Agency
  • La Crosse, WI
  • NPI 1013943893
  NPD (past)
• South Texas Eye Associates

  • Ophthalmology Physician
  • Victoria, TX
  • NPI 1932181641
  NPD (past)

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

{
    "created_epoch": "1148515200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1598711400",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-782-7300",
            "fax_number": "608-775-4429"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "106 E 2ND ST",
            "city": "WINONA",
            "state": "MN",
            "postal_code": "559873410",
            "telephone_number": "507-454-4640"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMAHON",
        "first_name": "ROBERT",
        "middle_name": "C",
        "credential": "OD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "MN",
            "license": "1471",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "38629600",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Miranda Ann McDannold
• Gabriella Pearl McDowell
• Dennis J McEntaffer, P.T.
• Anastasia Love McFarlane
• Destiny McGeough
• Robert E McManimon Moe, BS, ADC-T
• Raquela McManimon-Myers
• Molly Christine McNulty
• Meisel Chiropractic Center, PA
• Scott A. Meisel, D.C.

• Optometrist in Winona, MN
• Providers in Winona, MN by specialty
• Optometrist in Minnesota

• 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.