NPIMap

Individual provider Active NPI

Joseph A Krenzer, DO

  • Anatomic Pathology & Clinical Pathology Physician
  • Madison, WI
National Provider Identifier
1699269753
Registry record updated Apr 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X
License
MED-PHYS-LIC-143621 Issued in MT
Practice address
18 Yarrow Cir
Madison, WI 53719-4421
Phone
(406) 690-2019
NPI assigned
Jun 21, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 7, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X MED-PHYS-LIC-143621 MT Primary
Clinical Pathology/Laboratory Medicine Physician 207ZP0105X 75962 WI

Addresses

Primary practice location

18 Yarrow Cir
Madison, WI 53719-4421

Mailing address

18 Yarrow Cir
Madison, WI 53719-4421

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MT
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
I20240814001350 MT Practitioner - Pathology 9335496058 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Billings ClinicGroup PAC ID 6002993516, 814 clinicians

Practice addresses (Care Compare)

2800 10TH Ave N
Billings, MT 59101-0703
Phone (406) 657-4000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
83.32 of 100Reported as group
Quality
87.78
Promoting interoperability
77
Improvement activities
40
Cost
75.8

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MED-PHYS-LIC-143621MTMDAnatomic Pathology & Clinical Pathology Physician
75962WIMDClinical Pathology/Laboratory Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Billings Clinic CurrentSince Aug 5, 2024 Accepting new patients
Billings Clinic Anatomic Pathology & Clinical Pathology Current Accepting new patients
University of Wisconsin Medical Foundation, Inc CurrentSince Jul 1, 2023 Accepting new patients
University of Wisconsin Medical Foundation, Inc CurrentSince Jul 1, 2023 Accepting new patients
Billings Clinic CurrentSince Aug 5, 2024 Accepting new patients
Billings Clinic Past Accepting new patients

Locations

2800 10th Ave N
Billings, MT 59101
Phone (406) 248-3290

600 Highland Ave
Madison, WI 53792
Phone (608) 263-0325

7974 Uw Health Ct
Middleton, WI 53562
Phone (608) 829-5270

Organizations & group practices 6

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 16

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

View all 16

NPI Registry JSON

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

{
    "created_epoch": "1529539200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1699269753",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18 YARROW CIR",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537194421"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18 YARROW CIR",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537194421",
            "telephone_number": "406-690-2019"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRENZER",
        "first_name": "JOSEPH",
        "middle_name": "A",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-06-21",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "MT",
            "license": "MED-PHYS-LIC-143621",
            "primary": true
        },
        {
            "code": "207ZP0105X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology/Laboratory Medicine",
            "state": "WI",
            "license": "75962",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Madison, WI

Sources for this page

Verify at the official NPI Registry.