Quick answers
- Where does Jack L. Kaczmarczyk see patients?
- Medicare's clinician data lists 1 practice location in Grand Rapids, MI. Call before your visit to confirm the address.
- What is Jack L. Kaczmarczyk's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Jack L. Kaczmarczyk accept Medicare assignment?
- Yes. Medicare's clinician data says Jack L. Kaczmarczyk accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Jack L. Kaczmarczyk offer telehealth?
- Medicare's clinician data says Jack L. Kaczmarczyk offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jack L. Kaczmarczyk?
- (231) 888-1681, as listed in official Medicare / NPI Registry data.
- What is Jack L. Kaczmarczyk's NPI number?
- 1427752401. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Jack L. Kaczmarczyk is enrolled with Medicare (CMS data updated 2026-10-02).
- 630 Kenmoor Ave SE, Suite 101bGrand Rapids, MI 49546 (231) 888‑1681
Group practices
Medicare enrollment lists Jack L. Kaczmarczyk as a member of this group (CMS data updated 2026-10-02).
- Thrive Counseling LLC1,196 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427752401 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians