Only Human Mental Health LLC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

Legal business name

ONLY HUMAN MENTAL HEALTH LLC

Practice address

221 W Webster Ave Ste 303
Muskegon, MI 49440-1294

Phone

(231) 335-1630

Fax

(231) 259-4359

NPI assigned

Sep 29, 2025

Organization subpart

No

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

Authorized official

Name

Jack Louis Kaczmarczyk Jr., FNP-BC, PMHNP-BCNPI 1427752401

Title

Owner

Phone

(616) 402-7777

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MI

Enrollment records 1

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Jack Louis Kaczmarczyk Jr., PMHNP-BC, FNP-BC

  • Psychiatric/Mental Health Nurse Practitioner
  • Muskegon, MI
  • NPI 1427752401
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1759104000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1779840000000",
    "number": "1962375451",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "221 W WEBSTER AVE STE 303",
            "city": "MUSKEGON",
            "state": "MI",
            "postal_code": "494401294",
            "telephone_number": "231-335-1630",
            "fax_number": "231-259-4359"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "221 W WEBSTER AVE STE 303",
            "city": "MUSKEGON",
            "state": "MI",
            "postal_code": "494401294",
            "telephone_number": "231-335-1630",
            "fax_number": "231-259-4359"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ONLY HUMAN MENTAL HEALTH LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-09-29",
        "last_updated": "2026-05-27",
        "certification_date": "2026-05-27",
        "status": "A",
        "authorized_official_last_name": "KACZMARCZYK",
        "authorized_official_first_name": "JACK",
        "authorized_official_middle_name": "LOUIS",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "616-402-7777",
        "authorized_official_name_suffix": "Jr.",
        "authorized_official_credential": "FNP-BC, PMHNP-BC"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Linda Jean Olson
• John Nicholas Oltean, DO
• Adnan Qasim Omran, DMD
• Timothy Oneill, DO
• Michael Oneka, DO
• Carol Opalek, NP
• Optalis Muskegon Opco, LLC
• Optics Plus LLC
• Ionut A Oravitan, MD
• Cassandra Grace Orr, PA-C

• Psychiatric/Mental Health Nurse Practitioner in Muskegon, MI
• Providers in Muskegon, MI by specialty
• Psychiatric/Mental Health Nurse Practitioner in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.