Benjamin Trefilek, MD
NPI 1487187365 · Internal Medicine Physician · Denver, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Trefilek, MD is a Internal Medicine Physician provider in Denver, CO (NPI 1487187365).
Provider details
- NPI number
- 1487187365
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 103 | 36 |
| Amlodipine Besylate | 68 | 28 |
| Omeprazole | 49 | 17 |
| Gabapentin | 39 | 16 |
| Fluticasone Propionate | 38 | 16 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 37 | — |
| Carvedilol | 34 |
Practice location
Mailing address
Additional practice locations (1)
- 301 W 6th AveDenver, CO 80204-5182Phone: (303) 436-6000
Registry dates
- Enumerated
- 2017-04-06
- Last updated
- 2024-05-14
- Certified
- 2024-05-14
Frequently asked questions
- What is Benjamin Trefilek's NPI number?
- Benjamin Trefilek's National Provider Identifier (NPI) is 1487187365, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Trefilek's specialty?
- Benjamin Trefilek is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Trefilek located?
- Benjamin Trefilek's practice location on file with NPPES is 777 Bannock St, Denver, CO 80204-4597.
- What is Benjamin Trefilek's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Trefilek is (303) 602-0000.
- Does Benjamin Trefilek accept Medicare?
- Benjamin Trefilek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Trefilek's NPI active?
- Yes — Benjamin Trefilek's NPI (1487187365) is active in the NPPES registry as of the last update on 2024-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.