Melody Kay Willis, MSN, RN, PMHNP-BC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

2019009372 Issued in MO

Practice address

1420 US Highway 61
Crystal Cty, MO 63028-4108

Phone

(636) 543-2230

Fax

(636) 543-2231

NPI assigned

Feb 4, 2019

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 MO

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

Specialty

Nurse Practitioner

Education

Other, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

St Anthonys Physician Organization Hospitalist Services LCGroup PAC ID 5092980656, 140 clinicians

Mercy Clinic Adult Hospitalists Jefferson LLCGroup PAC ID 8628205598, 58 clinicians

Mercy Aco Clinical Services IncGroup PAC ID 6901188572, 159 clinicians

Mercy Clinic Adult Hospitalists - Washington, LLCGroup PAC ID 3577630540, 31 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Hospital Jefferson Hospital, Crystal City, MO, CCN 260023
• Mercy Hospital South Hospital, Saint Louis, MO, CCN 260077
• Mercy Hospital Washington Hospital, Washington, MO, CCN 260052

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science - Nursing, Nurse Practitioner, Registered Nurse

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mwillis1027028@directc.mercy.net

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.

• Mercy Aco Clinical Services Inc

  • Neurology Physician
  • Chesterfield, MO
  • NPI 1063965093
  Medicare reassignment Care Compare group NPD
• Mercy Clinic Adult Hospitalists - Washington, LLC

  • Hospitalist Physician
  • Washington, MO
  • NPI 1891943429
  Medicare reassignment Care Compare group NPD
• Mercy Clinic Adult Hospitalists- Jefferson, LLC

  • Internal Medicine Physician
  • Festus, MO
  • NPI 1083052492
  Medicare reassignment Care Compare group NPD
• St Anthonys Physician Organization Hospitalist Services, L.C.

  dba Mercy Clinic South Hospitalists

  • Hospitalist Physician
  • Saint Louis, MO
  • NPI 1407216336
  Medicare reassignment Care Compare group NPD
• Mercy Clinic Adult Hospitalists - St. Louis, LLC

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1841235108
  Medicare reassignment NPD
• Mercy East Support Services, LLC

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1225382013
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Mercy Hospital Jefferson

  • General Acute Care Hospital
  • Festus, MO
  • NPI 1508859661
  Care Compare affiliation
• Mercy Hospital South

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1568481984
  Care Compare affiliation
• Mercy Hospitals East Communities

  dba Mercy Hospital Washington

  • General Acute Care Hospital
  • Washington, MO
  • NPI 1285664177
  Care Compare affiliation

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

{
    "created_epoch": "1549238400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785456000000",
    "number": "1336604370",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1420 US HIGHWAY 61",
            "city": "CRYSTAL CTY",
            "state": "MO",
            "postal_code": "630284108",
            "telephone_number": "636-543-2230",
            "fax_number": "636-543-2231"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1420 US HIGHWAY 61",
            "city": "CRYSTAL CTY",
            "state": "MO",
            "postal_code": "630284108",
            "telephone_number": "636-543-2230",
            "fax_number": "636-543-2231"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIS",
        "first_name": "MELODY",
        "middle_name": "KAY",
        "credential": "MSN, RN, PMHNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-02-04",
        "last_updated": "2026-07-31",
        "certification_date": "2026-07-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "MO",
            "license": "2019009372",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jordyne Payne, FNP-BC
• Halie Rianne Scheffler, MSN-FNP
• Richard Martin Silverman, MD
• Mackenzie Taychert, DO
• Rebecca Wakeland
• Johnny Jason Yang, MD

• Psychiatric/Mental Health Nurse Practitioner in Crystal Cty, MO
• Providers in Crystal Cty, MO by specialty
• Psychiatric/Mental Health Nurse Practitioner in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 31, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.