William Sprague Trask IV, D.O.
NPI 1184706608ActiveIndividual· Anesthesiology· Boulder, CO
Anesthesiology (D.O.) in Boulder, Colorado, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2006). Medicare paid $36,088 for services to 218 patients in 2024.
Overview
| NPI | 1184706608 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Oct 20, 2006 |
| Last updated in NPPES | Sep 14, 2026 |
| Certified by provider | Sep 14, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 49491 | CO |
| Anesthesiology | 207L00000X | OP60150344 | WA |
| Anesthesiology | 207L00000X | OL20000111 | WA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 218 |
|---|---|
| Services billed | 270 across 53 procedure codes |
| Paid by Medicare | $36,088 |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Anesthesiology |
Medical group
- Boulder Valley Anesthesiology, PLLCBoulder, CO · 61 clinicians
Hospital affiliation
- Boulder Community HealthBoulder, CO
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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