Quick answers
- Does Sienna W. Riley accept Medicare assignment?
- Medicare's clinician data says Sienna W. Riley may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Sienna W. Riley see?
- In 2024, CMS data shows 242 Original Medicare patients and 5,697 services for Sienna W. Riley. This counts Original Medicare only and measures volume, not quality.
- What is Sienna W. Riley's NPI number?
- 1134797178. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sienna W. Riley, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 242 |
|---|---|
| Services billed to Medicare | 5,697 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)1,634 services
- Therapy procedure using manual technique, each 15 minutes (97140)1,459 services
- Therapy procedure using functional activities (97530)1,253 services
- Training for self-care or home management, each 15 minutes (97535)726 services
- Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)441 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis72%
- High blood pressure60%
- Anxiety25%
- Osteoporosis24%
- Ischemic heart disease19%
Practice locations
Addresses where Sienna W. Riley is enrolled with Medicare (CMS data updated October 2, 2026).
- 715 Maltman DrGrass Valley, CA 95945 (530) 272‑7306
Group practices
Medicare enrollment lists Sienna W. Riley as a member of this group (CMS data updated October 2, 2026).
- Body Logic Physical Therapy, P.C.8 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, California →
Other physical therapists in Grass Valley
Clinicians with the same Medicare primary specialty in Grass Valley, CA — not a recommendation.
Other clinicians in Body Logic Physical Therapy, P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1134797178 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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