NPIMap

Individual provider Active NPI

Rebekkah Warren Frunzac, MD, PHD

  • Surgery Physician
  • Rochester, MN
National Provider Identifier
1033497169
Registry record updated Dec 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
License
55504 Issued in MN
Practice address
200 1St St SW
Rochester, MN 55905-0001
Phone
(507) 284-2511
NPI assigned
Jul 22, 2011
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 12, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X 103296 WI
Surgery Physician 208600000X 55504 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

700 West Ave S
La Crosse, WI 54601-8806
Phone (608) 785-0940

Other names 1

  • Rebekkah Lynn Warren Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address rfrunzac28587@ehrdirect.mayoclinicmsg.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MN, WI2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20120813000758 MN Practitioner - General Surgery 0547416265 Reassigns benefits to 5 organizations
I20251223003832 WI Practitioner - General Surgery 0547416265 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

404 W Fountain St
Albert Lea, MN 56007-2437
Phone (507) 373-2384

700 W Ave S
La Crosse, WI 54601-4783
Phone (608) 785-0940

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy55
Hernia repair - groin (open)1-10
Mastectomy1-10
Upper gastrointestinal (GI) endoscopy for acid reflux40
Removal of tissue1-10
Skin biopsy1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
55504MNMDSurgery Physician
103296WIMDSurgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic Health System-Southeast Minnesota Region CurrentSince Aug 24, 2016 Accepting new patients
Mayo Clinic Health System-Southwest Minnesota Region Current Accepting new patients
Mayo Clinic Health System-Southeast Minnesota Region CurrentSince Aug 24, 2016 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Dec 2, 2025 Accepting new patients
Mayo Clinic Current Accepting new patients
Mayo Clinic Health System-Lake City CurrentSince Oct 28, 2019 Accepting new patients
Mayo Clinic CurrentSince Jul 14, 2012 Accepting new patients
Mayo Clinic CurrentSince Jul 14, 2012 Accepting new patients
Mayo Clinic Health System-Southwest Minnesota Region CurrentSince Oct 1, 2025 Accepting new patients
Mayo Clinic Health System-Southwest Minnesota Region CurrentSince Oct 1, 2025 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Dec 2, 2025 Accepting new patients

Locations

404 W Fountain St
Albert Lea, MN 56007
Phone (507) 377-6285

500 W Grant St
Lake City, MN 55041
Phone (651) 345-3321

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

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

501 State St N
Waseca, MN 56093
Phone (507) 835-1210

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

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

Interoperability endpoints

  • Direct secure messaging: rfrunzac28587@ehrdirect.mayoclinicmsg.org

Organizations & group practices 11

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 4

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": "1311292800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765497600000",
    "number": "1033497169",
    "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": "700 West Ave S",
            "address_purpose": "LOCATION",
            "city": "La Crosse",
            "state": "WI",
            "postal_code": "546018806",
            "country_code": "US",
            "telephone_number": "608-785-0940",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FRUNZAC",
        "first_name": "REBEKKAH",
        "middle_name": "WARREN",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-07-22",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "WI",
            "license": "103296",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MN",
            "license": "55504",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "rfrunzac28587@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": "REBEKKAH",
            "last_name": "WARREN",
            "middle_name": "LYNN",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Rochester, MN

Sources for this page

Verify at the official NPI Registry.