McKenzie Leigh Nikonovich, PMHNP-BC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

209.034755 Issued in IL

Practice address

6805 State Route 162 Ste 201
Maryville, IL 62062-8530

Phone

(618) 288-5019

NPI assigned

Feb 17, 2026

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 IL

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, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Southern Illinois Associates LLCGroup PAC ID 2961489992, 16 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/17590/brand/1/csg/1/fhir/r4
• FHIR API: https://fhir4.healow.com/fhir/r4/AFHDDD

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.

• Southern Illinois Associates LLC

  • Psychiatry Physician
  • Maryville, IL
  • NPI 1962427856
  Medicare reassignment Care Compare group NPD
• Psychiatric Urgent Care LLC

  • Urgent Care Clinic/Center
  • Maryville, IL
  • NPI 1134843451
  NPD

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

{
    "created_epoch": "1771286400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771286400000",
    "number": "1518810852",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6805 STATE ROUTE 162 STE 201",
            "city": "MARYVILLE",
            "state": "IL",
            "postal_code": "620628530",
            "telephone_number": "618-288-5019"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6805 STATE ROUTE 162 STE 201",
            "city": "MARYVILLE",
            "state": "IL",
            "postal_code": "620628530",
            "telephone_number": "618-288-5019"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIKONOVICH",
        "first_name": "MCKENZIE",
        "middle_name": "LEIGH",
        "credential": "PMHNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-02-17",
        "last_updated": "2026-02-17",
        "certification_date": "2026-02-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "IL",
            "license": "209.034755",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Naylor Periodontics, P.C.
• Melia Neill
• Sajjan K Nemani, MD
• Whitney Nichols, DOCTOR
• Sanjay K Nigam, MD
• Nobbe Family Chiropractic, Inc.
• Kristin Elizabeth Nobbe-Bloemer, D.C.
• Hailey Nosalik, PHYSICIAN ASSISTANT
• Richard M Novak, DC, CCST
• Novamed Eye Surgery Center of Maryville, LLC (Eyes of Illinois Surgery Center of Maryville)

• Psychiatric/Mental Health Nurse Practitioner in Maryville, IL
• Providers in Maryville, IL by specialty
• Psychiatric/Mental Health Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 17, 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.