Quick answers
- Does Shahab Aftahi accept Medicare assignment?
- Yes. Medicare's clinician data says Shahab Aftahi 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 Shahab Aftahi see?
- In 2024, CMS data shows 245 Original Medicare patients and 409 services for Shahab Aftahi. This counts Original Medicare only and measures volume, not quality.
- What is Shahab Aftahi's NPI number?
- 1881656783. 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 Shahab Aftahi, 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 | 245 |
|---|---|
| Services billed to Medicare | 409 |
| Different services or procedures | 38 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)75 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)41 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)41 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)29 services
- Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)24 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%
- Arthritis56%
- Ischemic heart disease43%
- Chronic kidney disease41%
- Diabetes33%
Hospitals where Shahab Aftahi works
Medicare's Facility Affiliation Data lists Shahab Aftahi 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.
- Chandler Regional Medical CenterChandler, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030036
- Good Samaritan Regional Medical CenterCorvallis, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380014
- Samaritan Albany General HospitalAlbany, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380022
- St Josephs Hospital and Medical CenterPhoenix, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030024
Practice locations
Addresses where Shahab Aftahi is enrolled with Medicare (CMS data updated October 2, 2026).
- 3600 NW Samaritan DrCorvallis, OR 97330
- 3600 NW Samaritan Dr, Suite 227Corvallis, OR 97330 (541) 768‑1261
- 500 W Thomas Rd, Suite 100Phoenix, AZ 85013 (602) 406‑5483
Group practices
Medicare enrollment lists Shahab Aftahi as a member of these groups (CMS data updated October 2, 2026).
- SJHMC Physician Services646 clinicians in the group
- Good Samaritan Hospital Corvallis380 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Corvallis
Clinicians with the same Medicare primary specialty in Corvallis, OR — not a recommendation.
Other clinicians in SJHMC Physician Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881656783 |
| 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