Peter Cahill, MD
NPI 1144389123 · Geriatric Medicine (Internal Medicine) Physician · Denver, CO
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Cahill, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Denver, CO (NPI 1144389123).
Provider details
- NPI number
- 1144389123
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0032931 (CO)
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 tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 54 | 34 |
| Oxycodone Hcl | 32 | 30 |
| Furosemide | 31 | 28 |
| Gabapentin | 24 | 17 |
| Levothyroxine Sodium | 24 | 13 |
| Amlodipine Besylate | 21 | 11 |
| Pantoprazole Sodium | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-06
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Frequently asked questions
- What is Peter Cahill's NPI number?
- Peter Cahill's National Provider Identifier (NPI) is 1144389123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Cahill's specialty?
- Peter Cahill is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Cahill located?
- Peter Cahill's practice location on file with NPPES is 10350 E Dakota Ave, Denver, CO 80247-1314.
- What is Peter Cahill's phone number?
- The practice phone number listed in the NPPES registry for Peter Cahill is (303) 338-4545.
- Does Peter Cahill accept Medicare?
- Peter Cahill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Cahill's NPI active?
- Yes — Peter Cahill's NPI (1144389123) is active in the NPPES registry as of the last update on 2026-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.