Melissa Marie Hamachek, PMHNP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

18684-33 Issued in WI

Practice address

1048 Glory Rd Ste a
Green Bay, WI 54304-5664

Phone

(920) 238-8155

Fax

(920) 214-1259

NPI assigned

Jul 10, 2026

Last updated

Jul 10, 2026By the provider in NPPES

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

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.

• Bay Psychiatry of Wisconsin LLC

  • Psychiatric/Mental Health Nurse Practitioner
  • Egg Harbor, WI
  • NPI 1376438135
  NPD (past)

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

{
    "created_epoch": "1783641600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783641600000",
    "number": "1619896099",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1048 GLORY RD STE A",
            "city": "GREEN BAY",
            "state": "WI",
            "postal_code": "543045664",
            "telephone_number": "920-238-8155",
            "fax_number": "920-214-1259"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1048 GLORY RD STE A",
            "city": "GREEN BAY",
            "state": "WI",
            "postal_code": "543045664",
            "telephone_number": "920-238-8155",
            "fax_number": "920-214-1259"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "30 N 18th Ave Ste 10B",
            "address_purpose": "LOCATION",
            "city": "Sturgeon Bay",
            "state": "WI",
            "postal_code": "542353207",
            "country_code": "US",
            "telephone_number": "920-238-8155",
            "fax_number": "920-214-1259",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMACHEK",
        "first_name": "MELISSA",
        "middle_name": "MARIE",
        "credential": "PMHNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-07-10",
        "last_updated": "2026-07-10",
        "certification_date": "2026-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "WI",
            "license": "18684-33",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Eric J Hallquist, MD
• Steven Alan Halsey, MD
• Kristen Ashley Haltom, RN
• Heather Ann Halverson, APNP
• Nicole M Halverson
• Daniel J Hamersky
• Todd Lee Hamilton, PSY.D.
• Melanie Hammerbeck, DDS
• Pamela Kay Hammock, APRN, FNP-BC
• Rexann Hammons, LPN

• Psychiatric/Mental Health Nurse Practitioner in Green Bay, WI
• Providers in Green Bay, WI by specialty
• Psychiatric/Mental Health Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.