Colin Mcmahon, MD
NPI 1427015650 · Internal Medicine Physician · Lockport, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colin Mcmahon, MD is a Internal Medicine Physician provider in Lockport, NY (NPI 1427015650).
Provider details
- NPI number
- 1427015650
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 186388 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
487 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 172 | $112 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 89 | $164 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 84 | $108 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 57 | $74 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 52 | $77 |
| Critical Care, First 30-74 Minutes99291 | 19 | $200 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 76 | 75 |
| Prednisone | 51 | 49 |
| Spironolactone | 22 | 22 |
| Empagliflozinbrand: Jardiance | 22 | 21 |
| Apixabanbrand: Eliquis | 21 | 19 |
| Azithromycin | 20 | 16 |
| Atorvastatin Calcium | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2020-04-03
- Certified
- 2020-04-03
Frequently asked questions
- What is Colin Mcmahon's NPI number?
- Colin Mcmahon's National Provider Identifier (NPI) is 1427015650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colin Mcmahon's specialty?
- Colin Mcmahon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Colin Mcmahon located?
- Colin Mcmahon's practice location on file with NPPES is 521 East Ave, Lockport, NY 14094-3201.
- What is Colin Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Colin Mcmahon is (716) 514-5700.
- Does Colin Mcmahon accept Medicare?
- Colin Mcmahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Colin Mcmahon's NPI active?
- Yes — Colin Mcmahon's NPI (1427015650) is active in the NPPES registry as of the last update on 2020-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.