Ann Elizabeth Wittwer, NP

Primary specialty

Adult Health Nurse PractitionerTaxonomy code 363LA2200X

License

1836-033 Issued in WI

Practice address

5000 West National Ave
Yellow Clinic
Milwaukee, WI 53295

Phone

(414) 384-2000

Fax

(414) 398-4198

NPI assigned

Jun 13, 2005

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

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

Credentials

Nurse Practitioner

State licenses

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

{
    "created_epoch": "1118620800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1598769911",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5000 W NATIONAL AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532950001",
            "telephone_number": "414-384-2000",
            "fax_number": "414-398-4198"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5000 WEST NATIONAL AVE",
            "address_2": "YELLOW CLINIC",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "53295",
            "telephone_number": "414-384-2000",
            "fax_number": "414-398-4198"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WITTWER",
        "first_name": "ANN",
        "middle_name": "ELIZABETH",
        "name_prefix": "Mrs.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-06-13",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "WI",
            "license": "1836-033",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jolene C Wittmann, APNP
• Tyler Alexander Wittmann, MD
• Wendy L. Wittmann, WHNP-BC
• Crystal A Wittrock, APNP
• Nicholas Wittry, M.D.
• Scott F Wittwer, PT
• Timothy Jon Wittwer, RN, MSN, FNP
• Kellen Witty
• Anna Wiza, PA-C
• Nicholas Wleklinski

• Adult Health Nurse Practitioner in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Adult Health Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.