Leon Mclean, MD
NPI 1457495806 · Gastroenterology Physician · Derry, NH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leon Mclean, MD is a Gastroenterology Physician provider in Derry, NH (NPI 1457495806).
Provider details
- NPI number
- 1457495806
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- NH17841 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
901 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 308 | $126 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 154 | $246 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 96 | $69 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 83 | $100 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 83 | $90 |
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 |
|---|---|---|
| Pantoprazole Sodium | 152 | 68 |
| Omeprazole | 59 | 23 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 49 | 45 |
| Famotidine | 33 | 14 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 32 | 29 |
| Esomeprazole Magnesium | 23 | — |
| Balsalazide Disodium | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23,498 across 60 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-19
- Last updated
- 2017-03-08
Frequently asked questions
- What is Leon Mclean's NPI number?
- Leon Mclean's National Provider Identifier (NPI) is 1457495806, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leon Mclean's specialty?
- Leon Mclean is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Leon Mclean located?
- Leon Mclean's practice location on file with NPPES is 6 Tsienneto Rd Ste 301, Derry, NH 03038-1584.
- What is Leon Mclean's phone number?
- The practice phone number listed in the NPPES registry for Leon Mclean is (603) 432-8802.
- Does Leon Mclean accept Medicare?
- Leon Mclean is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leon Mclean's NPI active?
- Yes — Leon Mclean's NPI (1457495806) is active in the NPPES registry as of the last update on 2017-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.