Pediatric ObesityPostoperative ComplicationsScoliosis
Jennifer Leong
NPI1265674998PAC ID4789856444
- Medicare services, 2024
- 327
- Medicare patients, 2024
- 133
- Part D claims, 2024
- 235
- Publications
- 15
- Clinical trials
- 1
- Practice address
- 311 E 79th St, New York, NY 10075
- Practice phone
- Call (212) 996-6633
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Upper East Side Gastroenterology
Surgery Center - Not Medicare-Certified · New York, New York
Find Jennifer Leong's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Jennifer Leong is a hepatology physician in New York, New York
Jennifer Leong practices at Upper East Side Gastroenterology in New York, New York.
Jennifer Leong's NPI, 1265674998, was assigned on March 26, 2009. Jennifer Leong graduated from New York University School of Medicine in 2004. Jennifer Leong holds New York license 243325.
NPI and contact details
- NPI
- 1265674998NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789856444
- NPI enumeration date
- March 26, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (212) 996-6633
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Jennifer Leong practices at Upper East Side Gastroenterology in New York, New York
Jennifer Leong's primary practice is Upper East Side Gastroenterology, at 311 E 79th St, New York, NY 10075. The practice phone is (212) 996-6633.
- Upper East Side Gastroenterology311 E 79th St, New York, NY 10075Phone(212) 996-6633
Source: Dmand AI Affiliation Data
Jennifer Leong is affiliated with 4 sites of care and 3 medical groups
Jennifer Leong's primary practice is Upper East Side Gastroenterology in New York, New York. The medical group on file is New York Gastroenterology Associates. Dmand AI also links Jennifer Leong to 3 more group practices and clinics and 2 medical groups, each named with a free account. Jennifer Leong's employer is on file too: a surgery center (asc).
Upper East Side GastroenterologyPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Jennifer Leong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jennifer Leong practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Upper East Side Gastroenterology | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Jennifer Leong is one of 34 hepatology physicians in New York
Hepatology is Jennifer Leong's primary specialty in the NPI Registry, under taxonomy code 207RI0008X. Jennifer Leong is licensed in New York.
Specialties and state licenses
- Hepatology, New YorkPrimary
Hepatology physicians near Jennifer Leong
Counts of hepatology physicians 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
Jennifer Leong billed Medicare for 327 services in 2024
CMS data shows 327 Medicare services from Jennifer Leong across 5 procedure codes in 2024, for 133 Medicare patients. Medicare paid $34,508 for them. Every service was in an office.
Medicare services, 2024327
Medicare patients133
Paid by Medicare$34,508
Procedure codes5
Jennifer Leong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2182024: 26823%
- Imaging
- 2023: 462024: 5928%
- Other services
- 2023: 342024: 0100%
Jennifer Leong compared with the New York median for hepatology physicians, 2024
- Jennifer Leong
- New York median
- Medicare services
- 327vs 327Close to median
- Medicare patients
- 133vs 17022% below
- Part D claims
- 140vs 145Close to median
Medians across 33 hepatology physicians in New York with Dmand AI profiles that report each measure.
Jennifer Leong'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.
Need commercial claims for Jennifer Leong?
Medicare shows one payer. Book a meeting to get commercial claims data for Jennifer Leong and other hepatology physicians in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Jennifer Leong treated 133 Medicare patients in 2024, average age 73
CMS counts 133 Medicare patients who saw Jennifer Leong in 2024. The largest group is 65 to 74, with 70 patients. 75% of them have high cholesterol, and 66% have high blood pressure. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Jennifer Leong's median patient age at 50, with 55% women.
Medicare patients, 2024133
Average age73
Average risk score1.11
Jennifer Leong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Jennifer Leong's Medicare patients by sex, 2024
- Women10075%
- Men3325%
Chronic conditions among Jennifer Leong's Medicare patients, 2024
- High cholesterol75%
- High blood pressure66%
- Arthritis53%
- Diabetes40%
- Osteoporosis32%
- Mood disorders31%
- Ischemic heart disease29%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Jennifer Leong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women55%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Jennifer Leong wrote 235 Medicare Part D claims in 2024
In 2024, Jennifer Leong wrote 235 Medicare Part D claims for 55 patients. 77% of them were for generic drugs. CMS names the drug for 140 of them, across 8 drugs with 11 or more claims each, at $38,629 in total drug cost. In 2023, CMS named 100 claims across 7 drugs.
Part D claims, 2024235
Drugs named by CMS8
Total drug cost$38,629
Part D patients55
Jennifer Leong's Part D claims by kind of drug, 2024
- Generic181 claims77%
- Brand-name54 claims23%
Jennifer Leong'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 Jennifer Leong's Part D claims, 2024
- Antibiotics6%15 of 235 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: 1002024: 14040%
Drugs named by CMS: 8 in 2024, 7 in 2023.
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
Jennifer Leong scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Jennifer Leong for performance year 2024, reported as part of a group. Jennifer Leong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Jennifer Leong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Jennifer Leong's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
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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Jennifer Leong has 15 publications on record
Dmand AI links 15 papers to Jennifer Leong, published from 2012 to 2024. 2021 was the busiest year, with 3. The most frequent topics are Carcinoma, Hepatocellular, Hepatitis B virus and Liver Neoplasms. Jennifer Leong's most frequent co-authors are Mindie Hoai Nguyen, MD, Myron Eliot Schwartz, MD and Gene Young Im, MD.
Papers15
Years published2012 to 2024
Jennifer Leong's papers by year, 2012 to 2024
Topics Jennifer Leong writes about most
- Carcinoma, Hepatocellular
- Hepatitis B virus
- Liver Neoplasms
- Liver Transplantation
- Antiviral Agents
- Hepacivirus
- Hepatitis B
- Hepatitis C
Jennifer Leong's most frequent co-authors
- Mindie Hoai Nguyen, MD5 shared papers
- Myron Eliot Schwartz, MD4 shared papers
- Gene Young Im, MD3 shared papers
Recent publications by Jennifer Leong
Antiviral AgentsCarcinoma, HepatocellularHepacivirus
JBJS Case Connect
Anti-Bacterial AgentsArthritisKnee Joint
AlanineAlanine TransaminaseDNA, Viral
See who Jennifer Leong researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Jennifer Leong works with, so you can find a warm path to the right hepatology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Jennifer Leong has worked on 1 clinical trial
Dmand AI links Jennifer Leong to 1 clinical trial. 1 is still active or recruiting. Open Payments lists research payments to Jennifer Leong that name 1 trial.
Investigators on the most trials with Jennifer Leong
- Antonios Arvelakis, MD1 shared trial
- Michael P. Curry, MD1 shared trial
- Sander S. Florman, MD1 shared trial
Recent clinical trials with Jennifer Leong
Molecular Assessment and Profiling of Liver Transplant Recipients (opens in a new tab)
Active, not recruiting
LiverCare
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Jennifer Leong received $16,728 in industry payments from 2018 to 2025
CMS Open Payments shows 86 general payments to Jennifer Leong from 17 drug and device companies from 2018 to 2025. Speaker and faculty fees make up the largest share, 67% of the total. Novo Nordisk Inc paid the most, $14,934. It also lists 2 research payments totaling $4,857 from 2024 to 2025, naming 1 clinical trial.
General payments to Jennifer Leong by program year, 2018 to 2025
General payments to Jennifer Leong by kind, 2018 to 2025
$16.7Kin total
- Speaker and faculty fees$11,27167%
- Food and beverage$2,29414%
- Consulting fees$1,82011%
- Travel and lodging$1,3438%
Companies that paid Jennifer Leong the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Jennifer Leong graduated from New York University School of Medicine
Jennifer Leong graduated from New York University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Jennifer Leong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors 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-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Jennifer Leong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Jennifer Leong's NPI number?
Jennifer Leong's NPI number is 1265674998. It was assigned on March 26, 2009, and it is active in the NPI Registry.
What does Jennifer Leong specialize in?
Jennifer Leong is a hepatology physician in New York, New York. The primary specialty in the NPI Registry is Hepatology Physician (taxonomy code 207RI0008X).
Where does Jennifer Leong practice?
Jennifer Leong practices at 311 E 79th St, New York, NY 10075. Jennifer Leong's primary practice is Upper East Side Gastroenterology in New York, New York. Dmand AI also links Jennifer Leong to 3 group practices and clinics and 2 medical groups.
What is Jennifer Leong's office phone number?
The practice phone on file for Jennifer Leong is (212) 996-6633.
What is Jennifer Leong's medical license number?
Jennifer Leong holds New York license 243325.
What medical group is Jennifer Leong part of?
Jennifer Leong is linked to New York Gastroenterology Associates. Dmand AI links Jennifer Leong to 2 more medical groups.
Does Jennifer Leong accept Medicare?
Yes. CMS data shows Jennifer Leong billed Medicare for 327 services in 2024, and Jennifer Leong accepts Medicare assignment.
Does Jennifer Leong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Jennifer Leong as offering telehealth services.
What is Jennifer Leong's MIPS score?
Jennifer Leong's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Jennifer Leong see?
CMS counts 133 Medicare patients who saw Jennifer Leong in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Jennifer Leong bill to Medicare?
In 2024, Jennifer Leong's most billed Medicare services were office visit, established patient (99214), ultrasound (76981) and office visit, established patient (99213).
Where did Jennifer Leong go to medical school?
Jennifer Leong graduated from New York University School of Medicine in 2004.
What drugs does Jennifer Leong prescribe most?
In 2024 Medicare Part D data, Jennifer Leong's most prescribed drugs by claims were Ursodiol, Omeprazole and Metformin HCl.
Has Jennifer Leong received payments from drug or device companies?
CMS Open Payments shows $16,728 in general payments to Jennifer Leong from 17 companies from 2018 to 2025. The largest total came from Novo Nordisk Inc.
How long has Jennifer Leong been practicing?
Jennifer Leong graduated from medical school in 2004, 22 years ago.
Does Jennifer Leong do research?
Dmand AI links 15 publications to Jennifer Leong, published from 2012 to 2024. Jennifer Leong has worked on 1 clinical trial.
Who does Jennifer Leong publish with?
Jennifer Leong's most frequent co-authors are Mindie Hoai Nguyen, MD (5 shared papers), Myron Eliot Schwartz, MD (4 shared papers) and Gene Young Im, MD (3 shared papers).
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