Quick answers
- Which hospitals does Irwin Grosman work at?
- Medicare's official clinician data lists Irwin Grosman at 1 hospital: New York-Presbyterian Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Irwin Grosman see patients?
- Medicare's clinician data lists 1 practice location in Brooklyn, NY. Call before your visit to confirm the address.
- What is Irwin Grosman's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Irwin Grosman accept Medicare assignment?
- Yes. Medicare's clinician data says Irwin Grosman 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 Irwin Grosman offer telehealth?
- Medicare's clinician data says Irwin Grosman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Irwin Grosman?
- (718) 780-3000, as listed in official Medicare / NPI Registry data.
- What is Irwin Grosman's NPI number?
- 1821059668. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Irwin Grosman works
Medicare's Facility Affiliation Data lists Irwin Grosman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · CCN 330101
Practice locations
Addresses where Irwin Grosman is enrolled with Medicare (CMS data updated 2026-10-02).
- 506 6th StBrooklyn, NY 11215 (718) 780‑3000
Group practices
Medicare enrollment lists Irwin Grosman as a member of this group (CMS data updated 2026-10-02).
- Kings Physician Services PC648 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821059668 |
| 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