Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Jack Louis Kaczmarczyk Jr., PMHNP-BC, FNP-BC

Individual provider Registered Nurse · NPI 1427752401

Jack Louis Kaczmarczyk Jr., PMHNP-BC, FNP-BC is a Nurse Practitioner in Muskegon, Michigan. Qualified in 2023, 3 years ago. Practices with Thrive Counseling LLC, a 1,188-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
3
Licensed in
MI
In the registry since
2023
Specialties on file
3
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.

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Practice location Address checks out

221 W Webster Ave Ste 303
Muskegon, MI 49440-1294
Phone: (231) 335-1630
Fax: (231) 259-4395
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 4704310792 (MI)
Registered Nurse Taxonomy 163W00000X · Licence 4704310792 (MI)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 4704310792 (MI)

Record details

NPI number1427752401
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP-BC , FNP-BC
Sole proprietorNo
NPI enumeratedMarch 27, 2023
Last updated in NPPESJanuary 15, 2026
Certification dateJanuary 15, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Thrive Counseling Llc — 1188 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients86
Services billed 263 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $2,602 171 payments · a meal or drink at a meeting or visit, not a fee
Education $8 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Thrive Counseling LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1188 clinicians in the practice; 12 are shown here.

Other providers in Muskegon