Quick answers
- Does Zvika J. Schreiber accept Medicare assignment?
- Yes. Medicare's clinician data says Zvika J. Schreiber accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Zvika J. Schreiber see?
- In 2024, CMS data shows 1,352 Original Medicare patients and 11,858 services for Zvika J. Schreiber. This counts Original Medicare only and measures volume, not quality.
- What is Zvika J. Schreiber's NPI number?
- 1891966693. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Zvika J. Schreiber, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,352 |
|---|---|
| Services billed to Medicare | 11,858 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)7,074 services
- Special stained specimen slides to examine tissue, initial procedure (88342)2,155 services
- Special stained specimen slides to examine tissue including interpretation and report (88313)1,259 services
- Special stained specimen slides to identify organisms including interpretation and report (88312)1,043 services
- Microscopic genetic analysis of tissue, manual, initial procedure (88368)109 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes52%
- Arthritis52%
- Ischemic heart disease31%
- Anxiety24%
Practice locations
Addresses where Zvika J. Schreiber is enrolled with Medicare (CMS data updated October 2, 2026).
- 1958 Ocean AveBrooklyn, NY 11230 (718) 645‑8901
- 70 N Country Rd, Suite 201Port Jefferson, NY 11777 (631) 331‑0200
- 902 Quentin Rd, Suite 701Brooklyn, NY 11223 (718) 336‑3900
- 9921 4th AveBrooklyn, NY 11209 (718) 336‑3900
Group practices
Medicare enrollment lists Zvika J. Schreiber as a member of these groups (CMS data updated October 2, 2026).
- Gastroenterology Associates of Brooklyn PLLC16 clinicians in the group
- Advanced Medical Group PC5 clinicians in the group
- Advanced Gastroenterology and Endoscopy PC4 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Other clinicians in Gastroenterology Associates of Brooklyn PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891966693 |
| 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 October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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