Individual provider Active NPI

Samuel John Ahrenholz, MD

  • Diagnostic Radiology Physician
  • Rochester, MN
National Provider Identifier
1275376535
Registry record updated Aug 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
80587 Issued in MN
Practice address
200 1St St SW
Rochester, MN 55905-0001
Phone
(507) 284-2511
NPI assigned
Jun 14, 2024
Last updated
Aug 5, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 5, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X 80587 MN Primary

Addresses

Primary practice location

200 1St St SW
Rochester, MN 55905-0001

Mailing address

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

Other practice location 1

1415 Woodland Ave Ste 140
Des Moines, IA 50309-3203
Phone (515) 241-6266

Other names 1

  • Sam Ahrenholz Other name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address sahrenholz2518524@ehrdirect.mayoclinicmsg.org

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250814000175 MN Practitioner - Diagnostic Radiology 3274078845 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
University of Iowa, RJ & L Carver College of Medicine, 2024
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mayo ClinicGroup PAC ID 6507778255, 4,829 clinicians

Practice addresses (Care Compare)

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

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
80587MNMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic CurrentSince Jul 23, 2025 Accepting new patients
Mayo Clinic CurrentSince Jul 23, 2025 Accepting new patients
Mayo Clinic Current Accepting new patients

Locations

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

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1718323200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754352000000",
    "number": "1275376535",
    "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": "200 1ST ST SW",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559050001",
            "telephone_number": "507-284-2511"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1415 Woodland Ave Ste 140",
            "address_purpose": "LOCATION",
            "city": "Des Moines",
            "state": "IA",
            "postal_code": "503093203",
            "country_code": "US",
            "telephone_number": "515-241-6266",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "AHRENHOLZ",
        "first_name": "SAMUEL",
        "middle_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-06-14",
        "last_updated": "2025-08-05",
        "certification_date": "2025-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MN",
            "license": "80587",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "sahrenholz2518524@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "200 1st St SW",
            "city": "Rochester",
            "state": "MN",
            "country_code": "US",
            "postal_code": "559050001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "SAM",
            "last_name": "AHRENHOLZ",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Rochester, MN

Sources for this page

Verify at the official NPI Registry.