Quick answers
- Which hospitals does Mark J. Janicki work at?
- Medicare's official clinician data lists Mark J. Janicki at 1 hospital: Witham Health Services. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Janicki see patients?
- Medicare's clinician data lists 1 practice location in Zionsville, IN. Call before your visit to confirm the address.
- What is Mark J. Janicki's specialty?
- Medicare lists Neurology as the primary specialty.
- Does Mark J. Janicki accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Janicki 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.
- What is the phone number for Mark J. Janicki?
- (765) 485-8000, as listed in official Medicare / NPI Registry data.
- What is Mark J. Janicki's NPI number?
- 1588661409. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark J. Janicki works
Medicare's Facility Affiliation Data lists Mark J. Janicki at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Witham Health ServicesLebanon, IN · Acute Care Hospital · CCN 150104
Practice locations
Addresses where Mark J. Janicki is enrolled with Medicare (CMS data updated 2026-10-02).
- 6085 Heartland Dr, Suite 200Zionsville, IN 46077 (765) 485‑8000
Group practices
Medicare enrollment lists Mark J. Janicki as a member of this group (CMS data updated 2026-10-02).
- Witham Memorial Hospital108 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Indiana
Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588661409 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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