NPIMap

Individual provider Active NPI

Paul Thomas Merchant, MD

  • Nephrology Physician
  • La Crosse, WI
National Provider Identifier
1427554153
Registry record updated Aug 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
84040-20 Issued in WI
Practice address
1836 South Ave
La Crosse, WI 54601-5429
Phone
(608) 782-7300
NPI assigned
Apr 2, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 4, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X 35.147903 OH
Nephrology Physician 207RN0300X 84040-20 WI Primary

Addresses

Primary practice location

1836 South Ave
La Crosse, WI 54601-5429

Mailing address

1836 South Ave
La Crosse, WI 54601-5429
Phone (608) 782-7300

Other practice location 1

9500 Euclid Ave # Q7
Cleveland, OH 44195-2364
Phone (216) 444-5040

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240701003894 WI Practitioner - Internal MedicinePractitioner - Nephrology 3375890429 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Nephrology
Education
Medical College of Wisconsin, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Gundersen Lutheran Medical Center IncGroup PAC ID 2163331414, 888 clinicians
Gundersen Clinic LTDGroup PAC ID 9638082779, 422 clinicians

Practice addresses (Care Compare)

1836 S Ave
La Crosse, WI 54601-5429
Phone (608) 783-7300

505 Gopher Dr
Tomah, WI 54660-4513
Phone (608) 372-4111

Hospital & facility affiliations

  • Gundersen Lutheran Renal Dialysis - Onalaska Dialysis facility, Onalaska, WI, CCN 523528
  • Gundersen Lutheran Renal Dialysis - la Crosse Dialysis facility, La Crosse, WI, CCN 522313
  • Gundersen Lutheran Medical Center Hospital, La Crosse, WI, CCN 520087
  • Aspirus Rhinelander Hospital Hospital, Rhinelander, WI, CCN 520019
  • Winona Health Services Hospital, Winona, MN, CCN 240044
  • Aspirus Wausau Hospital Hospital, Wausau, WI, CCN 520030
  • Gundersen St Josephs Hospital and Clinics Hospital, Hillsboro, WI, CCN 521304

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Aspirus Medical Group, Inc. Current Accepting new patients
The Howard Young Medical Center, Inc. Current Accepting new patients
Gundersen Clinic LTD CurrentSince Sep 25, 2025 Accepting new patients
Aspirus Wausau Hospital, Inc. Current Accepting new patients
Gundersen Lutheran Express Care, Inc CurrentSince Sep 25, 2025 Accepting new patients
Gundersen Lutheran Medical Center, Inc Nephrology CurrentSince Sep 2, 2025 Accepting new patients
Gundersen Lutheran Medical Center, Inc CurrentSince Sep 2, 2025 Accepting new patients
Aspirus Medford Hospital & Clinics, Inc. Current Accepting new patients
Langlade Hospital - Hotel Dieu of St Joseph of Antigo Wisconsin Current Accepting new patients
Gundersen Lutheran Medical Center Inc Current Accepting new patients
Gundersen Lutheran Medical Center Inc Past Accepting new patients

Locations

1830 State Highway 9
Ste 100
Decorah, IA 52101
Phone (563) 382-3140

29980 Network Pl
Chicago, IL 60673

112 E 5th Ave
Antigo, WI 54409
Phone (715) 623-2331

402 W Lake St
Friendship, WI 53934
Phone (608) 339-3331

1836 South Ave
La Crosse, WI 54601
Phone (608) 788-8102

1910 South Ave
La Crosse, WI 54601
Phone (608) 775-2287

135 S Gibson St
Medford, WI 54451
Phone (715) 748-8100

610 E Taylor St
Prairie du Chien, WI 53821
Phone (608) 326-6466

5409 Vern Holmes Dr
Stevens Point, WI 54482
Phone (715) 342-1015

505 Gopher Dr
Tomah, WI 54660
Phone (608) 372-2181

333 Pine Ridge Blvd
Ste 185
Wausau, WI 54401
Phone (715) 847-0477

333 Pine Ridge Blvd
Wausau, WI 54401
Phone (715) 847-2160

4005 Community Center Dr
Weston, WI 54476
Phone (715) 241-5400

240 Maple St
Woodruff, WI 54568
Phone (715) 356-8000

Interoperability endpoints

  • Direct secure messaging: pmerchant1087160@direct.emplifyhealth.org

Organizations & group practices 11

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.

Hospital & facility affiliations 37

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 37

NPI Registry JSON

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

{
    "created_epoch": "1522627200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754265600000",
    "number": "1427554153",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-782-7300"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "9500 Euclid Ave # Q7",
            "address_purpose": "LOCATION",
            "city": "Cleveland",
            "state": "OH",
            "postal_code": "441952364",
            "country_code": "US",
            "telephone_number": "216-444-5040",
            "fax_number": "216-636-4492",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MERCHANT",
        "first_name": "PAUL",
        "middle_name": "THOMAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-02",
        "last_updated": "2025-08-04",
        "certification_date": "2025-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "OH",
            "license": "35.147903",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WI",
            "license": "84040-20",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in La Crosse, WI

Sources for this page

Verify at the official NPI Registry.