Quick answers
- Does Cynthia S. Tremblay accept Medicare assignment?
- Yes. Medicare's clinician data says Cynthia S. Tremblay 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.
- How many Medicare patients does Cynthia S. Tremblay see?
- In 2024, CMS data shows 32 Original Medicare patients and 159 services for Cynthia S. Tremblay. This counts Original Medicare only and measures volume, not quality.
- What is Cynthia S. Tremblay's NPI number?
- 1215305263. 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 Cynthia S. Tremblay, 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 | 32 |
|---|---|
| Services billed to Medicare | 159 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Evaluation of neuropsychological test, each additional hour (96133)82 services
- Exam of neurobehavioral status, first hour (96116)32 services
- Evaluation of neuropsychological test, first hour (96132)32 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 blood pressure75%
- High cholesterol72%
- Arthritis59%
- Depression53%
- Alzheimer's disease or dementia44%
- Anxiety41%
Hospitals where Cynthia S. Tremblay works
Medicare's Facility Affiliation Data lists Cynthia S. Tremblay at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- St Luke's Regional Medical CenterBoise, ID · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 130006
Practice locations
Addresses where Cynthia S. Tremblay is enrolled with Medicare (CMS data updated October 2, 2026).
- 600 N Robbins Rd, Suite 100Boise, ID 83702 (208) 489‑4331
- 608 W Hays StBoise, ID 83702 (208) 381‑5970
- 610 W Hays StBoise, ID 83702
Group practices
Medicare enrollment lists Cynthia S. Tremblay as a member of this group (CMS data updated October 2, 2026).
- St Lukes Clinic-Treasure Valley LLC1,173 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Boise
Clinicians with the same Medicare primary specialty in Boise, ID — not a recommendation.
Other clinicians in St Lukes Clinic-Treasure Valley LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2013 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215305263 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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