Quick answers
- Where does Mark Whitsitt see patients?
- Medicare's clinician data lists 4 practice locations, including Bourbonnais, IL, Grayslake, IL and Lake Zurich, IL. Call before your visit to confirm the address.
- What is Mark Whitsitt's specialty?
- Medicare lists Physical Therapist in Private Practice as the primary specialty.
- Does Mark Whitsitt accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Whitsitt 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 Whitsitt?
- (815) 936-1855, as listed in official Medicare / NPI Registry data.
- What is Mark Whitsitt's NPI number?
- 1275016511. 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 Mark Whitsitt is enrolled with Medicare (CMS data updated 2026-10-02).
- 1275 N Convent St, Suite 3Bourbonnais, IL 60914 (815) 936‑1855
- 500 Ctr StGrayslake, IL 60030 (847) 665‑3018
- 573w Route 22Lake Zurich, IL 60047 (847) 796‑3320
- 724 E Rollins RdRound Lake Beach, IL 60073 (847) 270‑8028
Group practices
Medicare enrollment lists Mark Whitsitt as a member of these groups (CMS data updated 2026-10-02).
- Athletic and Therapeutic Institute of Naperville, LLC241 clinicians in the group
- Athletic and Therapeutic Institute of Bourbonnais, LLC167 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, Illinois →
Other physical therapists in Bourbonnais
Clinicians with the same Medicare primary specialty in Bourbonnais, IL — not a recommendation.
Clinician information
| Graduation year | 2018 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275016511 |
| 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