Quick answers
- Does Gregg M. Szerlip accept Medicare assignment?
- Yes. Medicare's clinician data says Gregg M. Szerlip 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 Gregg M. Szerlip see?
- In 2024, CMS data shows 176 Original Medicare patients and 1,734 services for Gregg M. Szerlip. This counts Original Medicare only and measures volume, not quality.
- What is Gregg M. Szerlip's NPI number?
- 1629128780. 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 Gregg M. Szerlip, 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 | 176 |
|---|---|
| Services billed to Medicare | 1,734 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, propofol, 10 mg (J2704)1,344 services
- Infusion, normal saline solution, 250 cc (J7050)87 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)53 services
- Anesthesia for nerve block and injection procedure, prone position (01992)42 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)39 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%
- Arthritis64%
- Diabetes43%
- Ischemic heart disease36%
- Depression27%
Practice locations
Addresses where Gregg M. Szerlip is enrolled with Medicare (CMS data updated October 2, 2026).
- 141 Washington Ave, Suite 204Lawrence, NY 11559 (516) 341‑0990
- 7010 Austin St, Suite 101Forest Hills, NY 11375 (516) 652‑8119
- 8708 Justice Ave, Suite 14Elmhurst, NY 11373 (718) 507‑8866
Group practices
Medicare enrollment lists Gregg M. Szerlip as a member of these groups (CMS data updated October 2, 2026).
- New Day Medical PC26 clinicians in the group
- South Island Gastroenterology Associates PC7 clinicians in the group
Specialties
Other anesthesiologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in New Day Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Nova Southeastern College Of Osteo Medicine |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629128780 |
| 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