NPIMap

Individual provider Active NPI

Bashar A Omari, MD

  • Nephrology Physician
  • La Crosse, WI
National Provider Identifier
1265592372
Registry record updated Jan 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
36005-20 Issued in WI
Practice address
700 West Ave S
La Crosse, WI 54601
Phone
(608) 785-0940
NPI assigned
Dec 11, 2006
Last updated
Jan 14, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 14, 2026

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 36005 WI
Nephrology Physician 207RN0300X 36005-20 WI Primary

Addresses

Primary practice location

700 West Ave S
La Crosse, WI 54601

Mailing address

PO Box 1510
Eau Claire, WI 54702-1510
Phone (608) 785-0940

Other practice location 1

1000 N Oak Ave
Marshfield, WI 54449-5702
Phone (715) 387-5511 ext. 715

Other practice location 2

1305 Woodman Rd
Janesville, WI 53545-1068
Phone (607) 741-4181

Other practice location 3

1305 Woodman Rd
Janesville, WI 53545-1068
Phone (607) 741-4181

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
I20040228000529 WI Practitioner - Nephrology 7416844022 Reassigns benefits to 7 organizations
Practice locations: Janesville, WI

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Other, 1991
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mercy Health System CorporationGroup PAC ID 7416860440, 749 clinicians
MCHS Hospitals IncGroup PAC ID 5698071173, 1,195 clinicians
Aspirus Medical Group, Inc.Group PAC ID 1052223625, 272 clinicians

Practice addresses (Care Compare)

1000 Mineral Point Ave
Janesville, WI 53548-2940
Phone (608) 756-6000

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

333 Pine Ridge Blvd
Wausau, WI 54401-4102
Phone (715) 847-0477

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
36005WIMDNephrology Physician
36005-20WIMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
MCHS Hospitals Inc Current Accepting new patients
Mercy Health System Corporation Current Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Nov 16, 2018 Accepting new patients
Aspirus Wausau Hospital, Inc. CurrentSince Feb 1, 2021 Accepting new patients
Aspirus Wausau Hospital, Inc. CurrentSince Feb 1, 2021 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. Current Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Feb 16, 2015 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Nov 16, 2018 Accepting new patients
MCHS Hospitals Inc CurrentSince Dec 2, 2021 Accepting new patients
Mercy Health System Corporation CurrentSince Apr 1, 2002 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. Current Accepting new patients
Aspirus Medical Group, Inc. Current Accepting new patients
Mercy Health System Corporation CurrentSince Apr 1, 2002 Accepting new patients
Aspirus Medical Group, Inc. Nephrology CurrentSince Feb 1, 2021 Accepting new patients
Aspirus Wausau Hospital, Inc. Current Accepting new patients
Aspirus Medical Group, Inc. CurrentSince Feb 1, 2021 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Feb 16, 2015 Accepting new patients
Marshfield Clinic Inc CurrentSince Dec 2, 2021 Accepting new patients
MCHS Hospitals Inc CurrentSince Dec 2, 2021 Accepting new patients

Locations

29624 Network Pl
Chicago, IL 60673
Phone (608) 741-7652

29980 Network Pl
Chicago, IL 60673

3501 Golf Rd
Eau Claire, WI 54701
Phone (715) 858-4200

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

1000 Mineral Point Ave
Janesville, WI 53548
Phone (608) 261-6868

700 West Ave S
La Crosse, WI 54601
Phone (608) 791-4156

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

1000 N Oak Ave
Marshfield, WI 54449
Phone (715) 387-5111

705 E Taylor St
Prairie du Chien, WI 53821
Phone (608) 357-2000

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

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

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

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

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

Interoperability endpoints

  • Direct secure messaging: bashar.omari@marshfieldclinichealthsystem.cernerdirect.com
  • Direct secure messaging: bomari159295@direct.aspirus.org
  • FHIR API: https://fhir-myrecord.cerner.com/r4/67ff075a-8289-4f2d-a8eb-5dc1f0d954ab/

Organizations & group practices 20

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

View all 20

Hospital & facility affiliations 21

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

View all 21

NPI Registry JSON

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

{
    "created_epoch": "1165795200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768348800000",
    "number": "1265592372",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1510",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547021510",
            "telephone_number": "608-785-0940"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "700 WEST AVE S",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "54601",
            "telephone_number": "608-785-0940"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1000 N Oak Ave",
            "address_purpose": "LOCATION",
            "city": "Marshfield",
            "state": "WI",
            "postal_code": "544495702",
            "country_code": "US",
            "telephone_number": "715-387-5511 x715",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1305 Woodman Rd",
            "address_purpose": "LOCATION",
            "city": "Janesville",
            "state": "WI",
            "postal_code": "535451068",
            "country_code": "US",
            "telephone_number": "607-741-4181",
            "fax_number": "608-741-2369",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1305 Woodman Rd",
            "address_purpose": "LOCATION",
            "city": "Janesville",
            "state": "WI",
            "postal_code": "535451068",
            "country_code": "US",
            "telephone_number": "607-741-4181",
            "fax_number": "608-741-2369",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OMARI",
        "first_name": "BASHAR",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-12-11",
        "last_updated": "2026-01-14",
        "certification_date": "2026-01-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WI",
            "license": "36005",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WI",
            "license": "36005-20",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in La Crosse, WI

Sources for this page

Verify at the official NPI Registry.