Dr. Galen Leung, MD

  • Mineola, NY
  • Gastroenterologist
NPI1386056794PAC ID4789087685
Medicare services, 2024
334
Medicare patients, 2024
263
Part D claims, 2024
194
Publications
17
Clinical trials
1
Practice address
259 1st St, Mineola, NY 11501
Practice phone
Call (516) 576-1820
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

NYU Langone Hospitals - Long Island

Mineola, New York

See all 4 affiliations

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Dr. Galen Leung is a gastroenterologist in Mineola, New York

Dr. Leung practices at NYU Langone Hospitals - Long Island in Mineola, New York.

Dr. Leung's NPI, 1386056794, was assigned on May 21, 2014. Dr. Leung holds Pennsylvania license MD474621.

NPI and contact details
Medicare PAC ID
4789087685
NPI enumeration date
May 21, 2014
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(516) 576-1820
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
38
Medical school graduation
2014

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Galen Leung practices at NYU Langone Hospitals - Long Island in Mineola, New York

Dr. Leung's primary practice is NYU Langone Hospitals - Long Island, at 259 1st St, Mineola, NY 11501 in Nassau County. The practice phone is (516) 576-1820.

  • NYU Langone Hospitals - Long Island
    259 1st St, Mineola, NY 11501 · Nassau CountyPhone(516) 576-1820

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Galen Leung is affiliated with 2 sites of care and 2 medical groups

Dr. Leung's primary practice is NYU Langone Hospitals - Long Island in Mineola, New York. Dr. Leung is also affiliated with Tisch Hospital. The medical group on file is NYU Langone Orthopedic Surgery Associates. Dmand AI also links Dr. Leung to 1 more medical group, named with a free account.

See all 4 affiliations for Dr. Leung

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Galen Leung's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leung practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
NYU Langone Hospitals - Long IslandAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Galen Leung is one of 1,583 gastroenterologists in New York

Gastroenterology is Dr. Leung's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Leung is licensed in Pennsylvania.

Specialties and state licenses

  • Gastroenterology, PennsylvaniaPrimaryLicense MD474621 · taxonomy 207RG0100X

Gastroenterologists near Dr. Leung

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Galen Leung billed Medicare for 334 services in 2024

CMS data shows 334 Medicare services from Dr. Leung across 13 procedure codes in 2024, for 263 Medicare patients. Medicare paid $37,805 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024334
Medicare patients263
Paid by Medicare$37,805
Procedure codes13

Dr. Leung's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 1362024: 20450%
Office and hospital visits
2023: 832024: 13057%

Dr. Leung compared with the New York median for gastroenterologists, 2024

  • Dr. Leung
  • New York median
Medicare services
334vs 42121% below
Medicare patients
263vs 23611% above
Part D claims
124vs 38268% below

Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.

Dr. Leung's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Leung

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Galen Leung treated 263 Medicare patients in 2024, average age 71

CMS counts 263 Medicare patients who saw Dr. Leung in 2024. The largest group is 65 to 74, with 129 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Leung's median patient age at 70, with 43% women.

Medicare patients, 2024263
Average age71
Average risk score2.10
Also on Medicaid11%

Dr. Leung's Medicare patients by age, 2024

Dr. Leung's Medicare patients by sex, 2024

  • Women13351%
  • Men13049%

Chronic conditions among Dr. Leung's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis48%
  4. Diabetes41%
  5. Ischemic heart disease36%
  6. Chronic kidney disease29%
  7. Anxiety27%
  8. Cancer27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Leung's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women43%
  • Men56%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Galen Leung wrote 194 Medicare Part D claims in 2024

In 2024, Dr. Leung wrote 194 Medicare Part D claims for 57 patients. 74% of them were for generic drugs. CMS names the drug for 124 of them, across 5 drugs with 11 or more claims each, at $99,471 in total drug cost. In 2023, CMS named 65 claims across 2 drugs.

Part D claims, 2024194
Drugs named by CMS5
Total drug cost$99,471
Part D patients57

Dr. Leung's Part D claims by kind of drug, 2024

  • Generic143 claims74%
  • Brand-name51 claims26%

Dr. Leung's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Leung's Part D claims, 2024

  • Antibiotics11%21 of 194 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 652024: 12491%

Drugs named by CMS: 5 in 2024, 2 in 2023.

See all prescribing by Dr. Leung

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Galen Leung scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Leung for performance year 2024, reported as part of a group. Dr. Leung accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Leung as offering telehealth. CMS counts 276 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Leung, more than 94% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Leung's MIPS scores, performance year 2024

  • 85of 100Final score
  • 73.6of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 76of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Leung ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
94th percentile276 procedures
Colonoscopy
68th percentile61 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Galen Leung has 17 publications on record

Dmand AI links 17 papers to Dr. Leung, published from 2011 to 2025. 2011 was the busiest year, with 2. The most frequent topics are Pancreaticoduodenectomy, Ampulla of Vater and Common Bile Duct Neoplasms. Dr. Leung has published most often in Clin Gastroenterol Hepatol. Dr. Leung's most frequent co-authors are Marco Del Chiaro, MD, Mark A. Schattner, MD and Juan Carlos C. Bucobo, MD.

Papers17
Years published2011 to 2025

Dr. Leung's papers by year, 2011 to 2025

Topics Dr. Leung writes about most

  • Pancreaticoduodenectomy
  • Ampulla of Vater
  • Common Bile Duct Neoplasms
  • Endoscopic Mucosal Resection
  • Duodenal Neoplasms
  • Gastric Mucosa
  • Mitochondria
  • Mitochondrial Proteins

Dr. Leung's most frequent co-authors

Recent publications by Dr. Leung

See all 17 publications and co-authors

See who Dr. Leung researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leung works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Galen Leung has worked on 1 clinical trial

Dmand AI links Dr. Leung to 1 clinical trial. Conditions studied include Stomach Neoplasms and Stomach Diseases.

Conditions in Dr. Leung's trials

  • Stomach Neoplasms
  • Stomach Diseases

Investigators on the most trials with Dr. Leung

Recent clinical trials with Dr. Leung

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Galen Leung received $10,745 in industry payments from 2021 to 2025

CMS Open Payments shows 79 general payments to Dr. Leung from 10 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 46% of the total. Steris Corporation paid the most, $5,341.

General payments to Dr. Leung by program year, 2021 to 2025

General payments to Dr. Leung by kind, 2021 to 2025

$10.7Kin total
  • Food and beverage$4,99646%
  • Consulting fees$3,75035%
  • Travel and lodging$1,99919%

Companies that paid Dr. Leung the most, 2021 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Leung

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Galen Leung's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Galen Leung

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Galen Leung's NPI number?

Dr. Galen Leung's NPI number is 1386056794. It was assigned on May 21, 2014, and it is active in the NPI Registry.

What kind of doctor is Dr. Galen Leung?

Dr. Galen Leung is a gastroenterologist in Mineola, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Galen Leung practice?

Dr. Leung practices at 259 1st St, Mineola, NY 11501. Dr. Leung's primary practice is NYU Langone Hospitals - Long Island in Mineola, New York. Dmand AI also links Dr. Leung to 1 medical group.

What is Dr. Galen Leung's office phone number?

The practice phone on file for Dr. Leung is (516) 576-1820.

What is Dr. Galen Leung's medical license number?

Dr. Leung holds Pennsylvania license MD474621.

Which hospitals is Dr. Galen Leung affiliated with?

Dr. Leung is affiliated with Tisch Hospital.

What medical group is Dr. Galen Leung part of?

Dr. Leung is linked to NYU Langone Orthopedic Surgery Associates. Dmand AI links Dr. Leung to 1 more medical group.

Does Dr. Galen Leung accept Medicare?

Yes. CMS data shows Dr. Leung billed Medicare for 334 services in 2024, and Dr. Leung accepts Medicare assignment.

Does Dr. Galen Leung offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Leung as offering telehealth services.

What is Dr. Galen Leung's MIPS score?

Dr. Leung's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

Show 7 more questionsShow fewer questions

How many Medicare patients does Dr. Galen Leung see?

CMS counts 263 Medicare patients who saw Dr. Leung in 2024, with an average age of 71.

What services does Dr. Galen Leung bill to Medicare?

In 2024, Dr. Leung's most billed Medicare services were surgery: digestive system (43239), hospital inpatient care (99232) and surgery: digestive system (45385).

What drugs does Dr. Galen Leung prescribe most?

In 2024 Medicare Part D data, Dr. Leung's most prescribed drugs by claims were Omeprazole, Creon and Pantoprazole Sodium.

Has Dr. Galen Leung received payments from drug or device companies?

CMS Open Payments shows $10,745 in general payments to Dr. Leung from 10 companies from 2021 to 2025. The largest total came from Steris Corporation.

How long has Dr. Galen Leung been practicing?

Dr. Leung graduated from medical school in 2014, 12 years ago.

Does Dr. Galen Leung do research?

Dmand AI links 17 publications to Dr. Leung, published from 2011 to 2025. Dr. Leung has worked on 1 clinical trial.

Who does Dr. Galen Leung publish with?

Dr. Leung's most frequent co-authors are Marco Del Chiaro, MD (3 shared papers), Mark A. Schattner, MD (3 shared papers) and Juan Carlos C. Bucobo, MD (2 shared papers).

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