Quick answers
- Where does Mary E. Theis see patients?
- Medicare's clinician data lists 2 practice locations, including Terre Haute, IN and Evanston, IL. Call before your visit to confirm the address.
- What is Mary E. Theis's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does Mary E. Theis accept Medicare assignment?
- Medicare's clinician data says Mary E. Theis may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Mary E. Theis?
- (847) 677-7022, as listed in official Medicare / NPI Registry data.
- What is Mary E. Theis's NPI number?
- 1366808974. 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 Mary E. Theis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1307 Watertree RdTerre Haute, IN 47803
- 9343 Drake AveEvanston, IL 60203 (847) 677‑7022
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Terre Haute
Clinicians with the same Medicare primary specialty in Terre Haute, IN — not a recommendation.
Clinician information
| Graduation year | 1977 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1366808974 |
| 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