Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 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
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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

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