Affiliated with a Castle Connolly Top Hospital
Who is Dr. Leung, Gastroenterologist in Boston, MA?
Castle Connolly Top Doctor
Castle Connolly Top Doctors are doctor-nominated and selected by a physician-led research team.
What are Areas of Expertise for Dr. Leung?
Dr. John Leung, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Leung empowers patients to confidently navigate their health journey, specializing in Allergy, Asthma, Celiac Disease, Food Allergy, Immunology, and comprehensive wellness support. Serving the Boston, MA community, Dr. Leung is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Leung go to medical school and complete their residency?
Medical School: University of Mi Med Sch | University of Michigan Medical School
Is Dr. Leung board certified as a Gastroenterologist?
Yes, Dr. John Leung, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Leung speak?
Dr. Leung and their clinical team can communicate with patients in the following languages:
- Cantonese
- English
What conditions does a Gastroenterologist like Dr. Leung typically treat?
As a Gastroenterologist, Dr. Leung diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Leung. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Allergic Rhinitis
- Allergy
- Nasal allergy
- Chronic allergy symptoms
- Allergic reactions
ICD-10 Codes:
- J3089: Other allergic rhinitis
Also known as:
- Eosinophilic Esophagitis
- EoE
- Allergic Esophagitis
- Eosinophilic Inflammation of Esophagus
ICD-10 Codes:
- K200: Eosinophilic esophagitis
Also known as:
- Widespread Abdominal Pain
- Abdominal Pain
- General stomach pain
- Overall belly pain
- Diffuse abdominal pain
ICD-10 Codes:
- R1084: Generalized abdominal pain
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
What procedures does a Gastroenterologist like Dr. Leung typically perform?
As a Gastroenterologist, Dr. Leung performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Leung. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Colonoscopy with Biopsy
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
CPT Codes:
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
Also known as:
- Upper Endoscopy with Polyp Removal
- EGD with Polypectomy
- Esophagus, Stomach, Duodenum Scope with Removal
- Flexible Endoscopy Tumor Excision
CPT Codes:
- 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
Does Dr. Leung accept my insurance?
Dr. Leung accepts most major insurance plans. Important: Please contact the office before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Leung accept in Boston, MA?
Dr. Leung in Boston, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Blue Cross Blue Shield of Massachusetts
BMC Health System
Cigna Group
CVS Health (formerly Aetna)
Medicare
Molina Healthcare
Network Health
Point32Health
State of Massachusetts
UnitedHealth Group
View All Insurances
Where is Dr. Leung's office located?
What hospitals are Dr. Leung affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Leung has admitting privileges at the following hospitals:
What is Dr. Leung's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Leung's National Provider Identifier (NPI) number is 1447328711.
What common questions do patients ask about Dr. Leung?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Leung