Gina Ratzlow, APNP

Primary specialty

Primary Care Nurse PractitionerTaxonomy code 363LP2300X

License

196508 Issued in WI

Practice address

5800 W. Layton Ave
Greenfield, WI 53220

Phone

(262) 532-3067

NPI assigned

Oct 17, 2019

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gpetersen335174@direct.froedtert.com

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.

• Froedtert &the Medical College of Wisconsin Community Physicians, Inc.

  • Internal Medicine Physician
  • Menomonee Falls, WI
  • NPI 1568787448
  Medicare reassignment NPD
• The Medical College of Wisconsin, Inc.

  • Internal Medicine Physician
  • Milwaukee, WI
  • NPI 1699720086
  Medicare reassignment NPD
• Froedtert &the Medical College of Wisconsin Community Physicians, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Wauwatosa, WI
  • NPI 1154947224
  NPD
• Prohealth Medical Group Inc.

  • Pediatrics Physician
  • Waukesha, WI
  • NPI 1356322440
  NPD

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

{
    "created_epoch": "1571270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786752000000",
    "number": "1730722166",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9200 W WISCONSIN AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532263522",
            "telephone_number": "414-805-3666"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5800 W. LAYTON AVE",
            "city": "GREENFIELD",
            "state": "WI",
            "postal_code": "53220",
            "telephone_number": "262-532-3067"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "9200 W Wisconsin Ave",
            "address_purpose": "LOCATION",
            "city": "Milwaukee",
            "state": "WI",
            "postal_code": "532263522",
            "country_code": "US",
            "telephone_number": "414-805-3666",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RATZLOW",
        "first_name": "GINA",
        "credential": "APNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-10-17",
        "last_updated": "2026-08-15",
        "certification_date": "2026-08-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP2300X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Primary Care",
            "state": "WI",
            "license": "196508",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "WI",
            "license": "196508",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Desiree Rafel, LPN
• Eric Shawn Ramos Jr., DMD
• Priti Rana, DO
• Spencer Lee Randazzo, DO
• Rapid Medical Suppies
• Christine M Reardon, DPM
• Georgiana Rebic, PTA
• Rehab Choice Incorporated
• Rehabcare Group East, LLC
• Rehabclinics Galaxy Inc

• Primary Care Nurse Practitioner in Greenfield, WI
• Providers in Greenfield, WI by specialty
• Primary Care Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.