What is Christopher Leung's specialty?

Christopher Leung (NPI 1538257464) is a Medicare-billing provider whose primary specialty is Gastroenterology in Stoneham, MA.

Where does Christopher Leung practice?

Christopher Leung practices in Stoneham, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1538257464.

How much does Medicare pay Christopher Leung?

Christopher Leung (NPI 1538257464) received approximately $97K in total Medicare Part B payments, serving 503 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1538257464

Christopher LeungM.D.

GastroenterologyStoneham, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

828

Unique beneficiaries

—

Total services

958

Distinct HCPCS

Medicare payment

$91K

Peer benchmark

Total Medicare services vs. 483 Gastroenterology providers in MA — above median (cohort median 638).

PRESCRIBING · PART D · 2024

Total Rx claims

742

Beneficiaries

—

Total drug cost

$81K

Distinct drugs

Brand share

17.9%

Top prescribed drugs

Omeprazole259 claims

Pantoprazole Sodium157 claims

Famotidine62 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl51 claims

Sucralfate45 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$135

Payment records

By payment type

Food and Beverage$135

Top paying entities

Food and Beverage$135

REFERRAL NETWORK

Where Christopher Leung's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 18 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Irina Dubinchik Pathology · Burlington, MA	36	80
LEE, PETER	32	69
David Kwon Diagnostic Radiology · Greensboro, NC	29	56
Joshua Stein Diagnostic Radiology · Melrose, MA	24	49
WOOD, DIANA	20	43
David Criss Cardiology · Melrose, MA	17	70
Erica Brooks Internal Medicine · Melrose, MA	16	32
Joseph Pennacchio Hematology-Oncology · Stoneham, MA	16	51
Katherine Bourne Anesthesiology · Newburyport, MA	15	31
Matthew Haverkamp Anesthesiology · Westwood, MA	14	30
Salil Midha Internal Medicine · Melrose, MA	14	27
Alison Mulcahey Certified Registered Nurse Anesthetist (CRNA) · Fort Myers, FL	13	30

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events