Thomas Therrien, D.O.
NPI 1831284520 · Emergency Medicine Physician · Windsor, CO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Therrien, D.O. is a Emergency Medicine Physician provider in Windsor, CO (NPI 1831284520).
Provider details
- NPI number
- 1831284520
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- A-1785-13 (NM)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
312 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 222 | $169 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 72 | $117 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 18 | $69 |
Typical Medicare-allowed amounts for these services range $69–$169 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dexamethasone | 24 | 23 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 22 | 22 |
| Ondansetronbrand: Ondansetron Odt | 22 | 22 |
| Doxycycline Hyclate | 18 | 17 |
| Cephalexin | 16 | 16 |
| Famotidine | 15 | 12 |
| Prednisone | 15 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2026-03-26
- Certified
- 2026-03-26
Frequently asked questions
- What is Thomas Therrien's NPI number?
- Thomas Therrien's National Provider Identifier (NPI) is 1831284520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Therrien's specialty?
- Thomas Therrien is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Therrien located?
- Thomas Therrien's practice location on file with NPPES is 413 Whitney Hbr, Windsor, CO 80550-6163.
- What is Thomas Therrien's phone number?
- The practice phone number listed in the NPPES registry for Thomas Therrien is (937) 478-5934.
- Does Thomas Therrien accept Medicare?
- Thomas Therrien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Therrien's NPI active?
- Yes — Thomas Therrien's NPI (1831284520) is active in the NPPES registry as of the last update on 2026-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.