Quick answers
- Which hospitals does John Leung work at?
- Medicare's official clinician data lists John Leung at 1 hospital: Beth Israel Deaconess Hospital - Needham. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Leung see patients?
- Medicare's clinician data lists 2 practice locations, including Boston, MA. Call before your visit to confirm the address.
- What is John Leung's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Allergy/Immunology.
- Does John Leung accept Medicare assignment?
- Yes. Medicare's clinician data says John Leung accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John Leung offer telehealth?
- Medicare's clinician data says John Leung offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John Leung?
- (617) 804-6767, as listed in official Medicare / NPI Registry data.
- What is John Leung's NPI number?
- 1447328711. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Leung works
Medicare's Facility Affiliation Data lists John Leung at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beth Israel Deaconess Hospital - NeedhamNeedham, MA · Acute Care Hospital · CCN 220083
Practice locations
Addresses where John Leung is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Nassau St, Unit 1906Boston, MA 02111 (617) 804‑6767
- 75 Kneeland St, Fl 1Boston, MA 02111 (617) 804‑6767
Group practices
Medicare enrollment lists John Leung as a member of this group (CMS data updated 2026-10-02).
- Boston Food Allergy Center LLC Bi Network4 clinicians in the group
Specialties
- Gastroenterologyprimary
- Allergy/Immunologyalso
Other gastroenterologists in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447328711 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians