William Trask, D.O.
NPI 1184706608 · Anesthesiology Physician · Boulder, CO
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Trask, D.O. is a Anesthesiology Physician provider in Boulder, CO (NPI 1184706608).
Provider details
- NPI number
- 1184706608
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OL20000111 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
135 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 78 | $113 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 31 | $58 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 26 | $263 |
Typical Medicare-allowed amounts for these services range $58–$263 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 12040 Ne 128th StMail Stop #69Kirkland, WA 98034-3013Phone: (425) 899-3455Fax: (425) 899-3478
Registry dates
- Enumerated
- 2006-10-20
- Last updated
- 2019-03-02
Frequently asked questions
- What is William Trask's NPI number?
- William Trask's National Provider Identifier (NPI) is 1184706608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Trask's specialty?
- William Trask is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Trask located?
- William Trask's practice location on file with NPPES is 4747 Arapahoe Ave, Boulder, CO 80303-1131.
- What is William Trask's phone number?
- The practice phone number listed in the NPPES registry for William Trask is (303) 415-2532.
- Does William Trask accept Medicare?
- William Trask is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Trask's NPI active?
- Yes — William Trask's NPI (1184706608) is active in the NPPES registry as of the last update on 2019-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.