Quick answers
- Does Sophia R. Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Sophia R. Larson 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 Sophia R. Larson see?
- In 2024, CMS data shows 969 Original Medicare patients and 2,025 services for Sophia R. Larson. This counts Original Medicare only and measures volume, not quality.
- What is Sophia R. Larson's NPI number?
- 1295113108. 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 Sophia R. Larson, 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 | 969 |
|---|---|
| Services billed to Medicare | 2,025 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)507 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)166 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)140 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)140 services
- Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)129 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 cholesterol75%
- Arthritis46%
- Ischemic heart disease45%
- Atrial fibrillation37%
- Heart failure30%
Hospitals where Sophia R. Larson works
Medicare's Facility Affiliation Data lists Sophia R. Larson 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.
- Blue Mountain HospitalJohn Day, OR · Critical Access Hospital · Emergency services: listed by Medicare · CCN 381305
- St Charles MadrasMadras, OR · Critical Access Hospital · Emergency services: listed by Medicare · CCN 381324
- St Charles Medical Center - BendBend, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380047
- St Charles Medical Center PrinevillePrineville, OR · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 381313
Practice locations
Addresses where Sophia R. Larson is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 13; the Medicare profile lists all.
- 1245 NW 4th St, 101 Surg SpeciRedmond, OR 97756 (541) 548‑7761
- 1253 NW Canal Blvd, Adv Illness ManagRedmond, OR 97756 (541) 706‑5880
- 1315 NW 4th StRedmond, OR 97756 (541) 706‑4200
- 211 NW Larch Ave, Family CareRedmond, OR 97756 (541) 548‑2164
- 2245 NW Shevlin Park RdBend, OR 97703 (541) 382‑3344
Group practices
Medicare enrollment lists Sophia R. Larson as a member of this group (CMS data updated October 2, 2026).
- St Charles Health System Inc377 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Oregon →
Other cardiologists in Redmond
Clinicians with the same Medicare primary specialty in Redmond, OR — not a recommendation.
Other clinicians in St Charles Health System Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295113108 |
| 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