Quick answers
- Which hospitals does David S. Klug work at?
- Medicare's official clinician data lists David S. Klug at 1 hospital: Mount Sinai Beth Israel. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David S. Klug see patients?
- Medicare's clinician data lists 1 practice location in Brooklyn, NY. Call before your visit to confirm the address.
- What is David S. Klug's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does David S. Klug accept Medicare assignment?
- Yes. Medicare's clinician data says David S. Klug 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.
- What is the phone number for David S. Klug?
- (718) 253-1313, as listed in official Medicare / NPI Registry data.
- What is David S. Klug's NPI number?
- 1548334352. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David S. Klug works
Medicare's Facility Affiliation Data lists David S. Klug at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai Beth IsraelNew York, NY · Acute Care Hospital · closed, according to its website · CCN 330169
Practice locations
Addresses where David S. Klug is enrolled with Medicare (CMS data updated 2026-10-02).
- 2020 E 53rd St, Apt BbBrooklyn, NY 11234 (718) 253‑1313
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548334352 |
| 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