Christopher Leung, M.D.
NPI 1538257464 · Gastroenterology Physician · Stoneham, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Leung, M.D. is a Gastroenterology Physician provider in Stoneham, MA (NPI 1538257464).
Provider details
- NPI number
- 1538257464
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 230438 (MA)
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
958 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 317 | $103 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 149 | $260 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 141 | $17 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 105 | $110 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 259 | 94 |
| Pantoprazole Sodium | 157 | 56 |
| Famotidine | 62 | 16 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 51 | 46 |
| Sucralfate | 45 | 15 |
| Linaclotidebrand: Linzess | 40 | 13 |
| Dicyclomine Hcl | 25 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2015-01-21
Frequently asked questions
- What is Christopher Leung's NPI number?
- Christopher Leung's National Provider Identifier (NPI) is 1538257464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Leung's specialty?
- Christopher Leung is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Leung located?
- Christopher Leung's practice location on file with NPPES is 51 Montvale Ave, Stoneham, MA 02180-2417.
- What is Christopher Leung's phone number?
- The practice phone number listed in the NPPES registry for Christopher Leung is (781) 213-5200.
- Does Christopher Leung accept Medicare?
- Christopher Leung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Leung's NPI active?
- Yes — Christopher Leung's NPI (1538257464) is active in the NPPES registry as of the last update on 2015-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.