Quick answers
- Does Abhinav Tiwari accept Medicare assignment?
- Yes. Medicare's clinician data says Abhinav Tiwari 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 Abhinav Tiwari see?
- In 2024, CMS data shows 252 Original Medicare patients and 596 services for Abhinav Tiwari. This counts Original Medicare only and measures volume, not quality.
- What is Abhinav Tiwari's NPI number?
- 1225411598. 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 Abhinav Tiwari, 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 | 252 |
|---|---|
| Services billed to Medicare | 596 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)117 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)114 services
- Biopsy of large bowel using a flexible endoscope (45380)91 services
- Injection beneath lining of large bowel using a flexible endoscope (45381)29 services
- Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (43249)27 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 pressure69%
- High cholesterol65%
- Arthritis40%
- Anxiety28%
- Diabetes27%
- Depression27%
Hospitals where Abhinav Tiwari works
Medicare's Facility Affiliation Data lists Abhinav Tiwari 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.
- Bay Area HospitalCoos Bay, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380090
- Peace Harbor Medical CenterFlorence, OR · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 381316
- Sacred Heart Medical Center - RiverbendSpringfield, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380102
Practice locations
Addresses where Abhinav Tiwari is enrolled with Medicare (CMS data updated October 2, 2026).
- 3333 Riverbend DrSpringfield, OR 97477 (541) 222‑6000
- 3355 Riverbend Dr, Suite 400Springfield, OR 97477 (541) 222‑2402
- 3377 Riverbend DrSpringfield, OR 97477 (541) 222‑6000
- 4010 Aerial WayEugene, OR 97402
Group practices
Medicare enrollment lists Abhinav Tiwari as a member of this group (CMS data updated October 2, 2026).
- PeaceHealth Medical Group255 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Springfield
Clinicians with the same Medicare primary specialty in Springfield, OR — not a recommendation.
Other clinicians in PeaceHealth Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1225411598 |
| 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