Quick answers
- Where does Mark Chu see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY. Call before your visit to confirm the address.
- What is Mark Chu's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Mark Chu accept Medicare assignment?
- Medicare's clinician data says Mark Chu may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Mark Chu?
- (212) 219-8031, as listed in official Medicare / NPI Registry data.
- What is Mark Chu's NPI number?
- 1588755565. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark Chu is enrolled with Medicare (CMS data updated 2026-10-02).
- 13 -17 Elizabeth St, Suite 608New York, NY 10013 (212) 219‑8031
- 13 -17 Elizabeth Street, Suite 608New York, NY 10013
Group practices
Medicare enrollment lists Mark Chu as a member of this group (CMS data updated 2026-10-02).
- Downtown Gastroenterology Associates PC4 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1588755565 |
| 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
- 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