Quick answers
- Does Kathleen K. Sieg accept Medicare assignment?
- Yes. Medicare's clinician data says Kathleen K. Sieg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Kathleen K. Sieg's NPI number?
- 1700426491. 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 Kathleen K. Sieg is enrolled with Medicare (CMS data updated October 2, 2026).
- 10488 W Centennial Rd, Suite 301Littleton, CO 80127 (720) 773‑0833
Group practices
Medicare enrollment lists Kathleen K. Sieg as a member of this group (CMS data updated October 2, 2026).
- Rooted in Rehabilitation LLC2 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, Colorado →
Other physical therapists in Littleton
Clinicians with the same Medicare primary specialty in Littleton, CO — not a recommendation.
Clinician information
| School | University Of Colorado School Of Medicine, Aurora |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700426491 |
| 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