Quick answers
- Does Stephanie A. Nonas accept Medicare assignment?
- Yes. Medicare's clinician data says Stephanie A. Nonas 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 Stephanie A. Nonas see?
- In 2024, CMS data shows 51 Original Medicare patients and 128 services for Stephanie A. Nonas. This counts Original Medicare only and measures volume, not quality.
- What is Stephanie A. Nonas's NPI number?
- 1871631051. 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 Stephanie A. Nonas, 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 | 51 |
|---|---|
| Services billed to Medicare | 128 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Critical care, first 30-74 minutes (99291)63 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)15 services
- Test to measure expiratory airflow and volume (94010)11 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 pressure73%
- High cholesterol65%
- Arthritis49%
- Atrial fibrillation33%
- Diabetes29%
- Anxiety29%
Hospitals where Stephanie A. Nonas works
Medicare's Facility Affiliation Data lists Stephanie A. Nonas 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.
- OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380009
Practice locations
Addresses where Stephanie A. Nonas is enrolled with Medicare (CMS data updated October 2, 2026).
- 15700 SW Greystone CtBeaverton, OR 97006
- 3181 SW Sam Jackson Park RdPortland, OR 97239 (503) 494‑8311
Group practices
Medicare enrollment lists Stephanie A. Nonas as a member of this group (CMS data updated October 2, 2026).
- University Professional Services1,724 clinicians in the group
Specialties
Other pulmonologists in Beaverton
Clinicians with the same Medicare primary specialty in Beaverton, OR — not a recommendation.
Other clinicians in University Professional Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871631051 |
| 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