DR. GREGG MATTHEW SZERLIP D.O.
NPI 1629128780
Anesthesiology in Locust Valley, NY
About Dr. Gregg Matthew Szerlip D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGG MATTHEW SZERLIP D.O. (NPI 1629128780) is an individual anesthesiology provider in Locust Valley, New York, licensed in New York (186898) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Nova Southeastern College Of Osteo Medicine (1990).
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Gregg Matthew Szerlip D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
8Medicare enrollment records show Gregg Szerlip reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hicksville, NY 11801
- Reassigned Medicare billing, New York enrollment
- 2 clinicians in this Medicare group
Hicksville, NY 11801
- Reassigned Medicare billing, New York enrollment
Garden City, NY 11530
- Reassigned Medicare billing, New York enrollment
- 59 clinicians in this Medicare group
New Hyde Park, NY 11042
- Reassigned Medicare billing, New York enrollment
- 43 clinicians in this Medicare group
Flushing, NY 11367
- Reassigned Medicare billing, New York enrollment
- 51 clinicians in this Medicare group
Valley Stream, NY 11581
- Reassigned Medicare billing, New York enrollment
- 305 clinicians in this Medicare group
Lawrence, NY 11559
- Reassigned Medicare billing, New York enrollment
- 30 clinicians in this Medicare group
East Setauket, NY 11733
- Reassigned Medicare billing, New York enrollment
- 60 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gregg Szerlip's NPI number?
The NPI number for Gregg Szerlip is 1629128780. It was assigned to this individual provider in the NPPES registry on January 11, 2007.
Where is Gregg Szerlip located?
Gregg Szerlip practices at 21 Kaintuck Ln, Locust Valley, NY 11560. The listed phone number is (516) 331-0557.
What is Gregg Szerlip's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gregg Szerlip enrolled in Medicare?
Yes. Gregg Szerlip is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gregg Szerlip's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregg Szerlip reassigns Medicare benefits to 8 organizations: Health-Pro Medical P.C. (Hicksville, NY), Gms Medical Services, P.C. (Hicksville, NY), Star Suites LLC (Garden City, NY), Nhpe, LLC (New Hyde Park, NY), New Day Medical PC (Flushing, NY) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregg Szerlip's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gregg Szerlip was last updated on September 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Gregg Matthew Szerlip, D.O. · NPI 1629128780
Anesthesiology physician in Locust Valley, New York. Individual provider, active in the CMS NPPES registry since January 11, 2007.
## Identity
- **NPI:** 1629128780 (Entity type: Individual)
- **Enumerated:** January 11, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 186898 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 21 KAINTUCK LN, Locust Valley, NY 11560-2320
- **Phone:** (516) 331-0557
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Health-Pro Medical P.C. (NPI 1407995046, Hicksville, NY); Gms Medical Services, P.C. (NPI 1942350343, Hicksville, NY); Star Suites LLC (NPI 1023588266, Garden City, NY); Nhpe, LLC (NPI 1134665193, New Hyde Park, NY); New Day Medical PC (NPI 1396131272, Flushing, NY); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Nova Southeastern College Of Osteo Medicine, class of 1990
## Record status
- **NPPES last updated:** September 10, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1629128780) · Data from the CMS NPPES public registry.