Dr. Benjamin S. Gmelch, MD
Anesthesiology (Anesthesiology Physician)
- Medicare participating
At a glance
- Medical school
- Oregon Health Sciences University School of Medicine (2004)
- Years since graduation
- 22
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 71
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2004Medical school: Oregon Health Sciences University School of Medicine
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Anesthesiology Physician primary
OR license MD161520
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Sacred Heart Medical Center - Riverbend Springfield, OR
- Mckenzie-Willamette Medical Center Springfield, OR
Medical groups
- Northwest Anesthesia Physicians PC (92 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 71
- Services billed
- 103
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Insertion of artery tube for blood sampling or infusion through skin | 12 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $25.70 in total to this clinician.
| Merck Sharp & Dohme LLC | $25.70 |
|---|
| Education | $25.70 |
|---|
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Merck Sharp & Dohme LLC Oct 14, 2025 | Education BRIDION · NEUROSCIENCE · in-kind | $25.70 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.