Individual provider Active NPI

Darin C Lash, PA

  • Physician Assistant
  • Eau Claire, WI
National Provider Identifier
1548788284
Registry record updated Aug 31, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
4188-23 Issued in WI
Practice address
1221 Whipple St
Eau Claire, WI 54703-5200
Phone
(715) 838-5222
NPI assigned
Sep 1, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 31, 2023

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 4188-23 WI Primary

Addresses

Primary practice location

1221 Whipple St
Eau Claire, WI 54703-5200

Mailing address

200 1St St SW
Rochester, MN 55905-0001
Phone (507) 284-2511

Other practice location 1

711 W Adams St
Black River Falls, WI 54615-2200
Phone (715) 284-5361

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address dlash1336643@ehrdirect.mayoclinicmsg.org

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20171207002297 WI Practitioner - Physician Assistant 2466719976 Reassigns benefits to 9 organizations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
4188-23WIMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Dec 15, 2025 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Aug 31, 2023 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Aug 31, 2023 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Dec 15, 2025 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Dec 15, 2025 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Dec 15, 2025 Accepting new patients
Black River Health Inc CurrentSince Nov 19, 2018 Accepting new patients

Locations

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

1222 E Woodland Ave
Barron, WI 54812
Phone (715) 537-3166

711 W Adams St
Blk River Fls, WI 54615
Phone (715) 284-1302

1501 Thompson St
Bloomer, WI 54724
Phone (715) 568-2000

733 W Clairemont Ave
Eau Claire, WI 54701
Phone (715) 838-3806

1221 Whipple St
Eau Claire, WI 54703
Phone (715) 831-0100

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

2321 Stout Rd
Menomonie, WI 54751
Phone (715) 235-5531

13025 8th St
Osseo, WI 54758
Phone (715) 597-2575

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

Interoperability endpoints

  • Direct secure messaging: dlash1336643@ehrdirect.mayoclinicmsg.org

Organizations & group practices 9

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.

NPI Registry JSON

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

{
    "created_epoch": "1504224000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1693440000000",
    "number": "1548788284",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 1ST ST SW",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559050001",
            "telephone_number": "507-284-2511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 WHIPPLE ST",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547035200",
            "telephone_number": "715-838-5222"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "711 W Adams St",
            "address_purpose": "LOCATION",
            "city": "Black River Falls",
            "state": "WI",
            "postal_code": "546152200",
            "country_code": "US",
            "telephone_number": "715-284-5361",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LASH",
        "first_name": "DARIN",
        "middle_name": "C",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-09-01",
        "last_updated": "2023-08-31",
        "certification_date": "2023-08-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "WI",
            "license": "4188-23",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dlash1336643@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "1221 Whipple St",
            "city": "Eau Claire",
            "state": "WI",
            "country_code": "US",
            "postal_code": "547035200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Eau Claire, WI

Sources for this page

Verify at the official NPI Registry.