Individual provider Active NPI

Laura J Prosperi, CNM

  • Advanced Practice Midwife
  • La Crosse, WI
National Provider Identifier
1386625150
Registry record updated Jul 8, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Advanced Practice MidwifeTaxonomy code 367A00000X
License
137179 Issued in WI
Practice address
800 West Ave S
La Crosse, WI 54601-8806
Phone
(608) 782-9760
NPI assigned
Nov 9, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 8, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Advanced Practice Midwife 367A00000X 137179 WI Primary

Addresses

Primary practice location

800 West Ave S
La Crosse, WI 54601-8806

Mailing address

PO Box 860912
Minneapolis, MN 55486-0912
Phone (507) 284-2511

Other practice location 1

1025 Marsh St
Mankato, MN 56001-4752
Phone (507) 625-4031

Other names 1

  • Laura J Harkness Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address lharkness26170@ehrdirect.mayoclinicmsg.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI, MN2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20040428000169 WI Practitioner - Certified Nurse Midwife (CNM) 0648267021 Reassigns benefits to 1 organization
I20250911002084 MN Practitioner - Certified Nurse Midwife (CNM) 0648267021 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Nurse Midwife (CNM)
Education
Other, 2024
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mayo Clinic Health System-Southwest Wisconsin Region IncGroup PAC ID 0345152443, 539 clinicians

Practice addresses (Care Compare)

800 E Blackhawk Ave
Prairie Du Chien, WI 53821-1698
Phone (608) 326-0808

800 W Ave S
La Crosse, WI 54601-8806
Phone (608) 785-0940

Hospital & facility affiliations

  • Mayo Clinic Health System-Franciscan Medical Center Inc Hospital, La Crosse, WI, CCN 520004

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Nurse Midwife

State licenses

LicenseStateTypeSpecialty
137179WIMDAdvanced Practice Midwife

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Oct 1, 2005 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Oct 1, 2005 Accepting new patients
Mayo Clinic Health System-Southwest Minnesota Region CurrentSince Aug 1, 2025 Accepting new patients
Mayo Clinic Health System-Southwest Minnesota Region CurrentSince Aug 1, 2025 Accepting new patients

Locations

901 Montgomery St
Decorah, IA 52101
Phone (319) 382-2911

1025 Marsh St
Mankato, MN 56001
Phone (507) 345-2623

200 1st St SW
Rochester, MN 55905
Phone (507) 266-4850

1400 Bellinger St
Eau Claire, WI 54703
Phone (715) 838-3311

800 West Ave S
La Crosse, WI 54601
Phone (608) 372-5951

800 E Blackhawk Ave
Prairie du Chien, WI 53821
Phone (608) 326-0808

310 W Main St
Sparta, WI 54656
Phone (608) 269-1700

325 Butts Ave
Tomah, WI 54660
Phone (608) 372-5951

Interoperability endpoints

  • Direct secure messaging: lharkness26170@ehrdirect.mayoclinicmsg.org

Organizations & group practices 4

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 1

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

NPI Registry JSON

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

{
    "created_epoch": "1131494400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783468800000",
    "number": "1386625150",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 860912",
            "city": "MINNEAPOLIS",
            "state": "MN",
            "postal_code": "554860912",
            "telephone_number": "507-284-2511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 WEST AVE S",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546018806",
            "telephone_number": "608-782-9760"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1025 Marsh St",
            "address_purpose": "LOCATION",
            "city": "Mankato",
            "state": "MN",
            "postal_code": "560014752",
            "country_code": "US",
            "telephone_number": "507-625-4031",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PROSPERI",
        "first_name": "LAURA",
        "middle_name": "J",
        "credential": "CNM",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-11-09",
        "last_updated": "2026-07-08",
        "certification_date": "2026-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367A00000X",
            "taxonomy_group": "",
            "desc": "Advanced Practice Midwife",
            "state": "WI",
            "license": "137179",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "lharkness26170@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "800 West Ave S",
            "city": "La Crosse",
            "state": "WI",
            "country_code": "US",
            "postal_code": "546018806",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "LAURA",
            "last_name": "HARKNESS",
            "middle_name": "J",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in La Crosse, WI

Sources for this page

Verify at the official NPI Registry.