JL
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Leung, Gastroenterologist in Boston, MA?
Dr. John Leung, MD is a Gastroenterologist, who primarily practices in Boston, MA with 1 additional practice location. He is board certified. Dr. Leung graduated from University of Michigan Medical School. Dr. Leung is fluent in English and Cantonese, and is currently seeing new patients. Dr. Leung’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Leung’s office.
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 call our office at 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
Unknown
View All Insurances
Where is Dr. Leung's office located?
What is Dr. Leung's NPI number?An 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
What is Dr. John Leung's specialty?
Dr. Leung is a Gastroenterologist near Boston, MA.
What does a Gastroenterologist do?
An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.
Is this Dr. John Leung affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Leung is affiliated with Beth Israel Deaconess Hospital-Needham which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Gastroenterologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Leung accepting new patients in Boston, MA?
Yes, Dr. John Leung is accepting new patients at this time.
Does Dr. John Leung offer online booking?
Please contact Dr. Leung's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Leung?
Please contact Dr. Leung's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Leung have?
Dr. John Leung is certified by the American Board of Internal Medicine.
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