Quick answers
- Does Tammy Hillegeist accept Medicare assignment?
- Medicare's clinician data says Tammy Hillegeist may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Tammy Hillegeist's NPI number?
- 1922931583. 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 Tammy Hillegeist is enrolled with Medicare (CMS data updated October 2, 2026).
- 29222 Rancho Viejo Rd, Suite 127San Juan Capistrano, CA 92675
- 8008 Ashlane Way, Suite 120Spring, TX 77382
Specialties
Find other clinicians: Occupational Therapist in Private Practice, California →
Other occupational therapists in San Juan Capistrano
Clinicians with the same Medicare primary specialty in San Juan Capistrano, CA — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1922931583 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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