DR. DANIEL SLONIEWSKY M.D.
NPI 1992748842
Pediatrics - Pediatric Critical Care Medicine in Stony Brook, NY
About Dr. Daniel Sloniewsky M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DANIEL SLONIEWSKY M.D. (NPI 1992748842) is an individual pediatric critical care medicine provider in Stony Brook, New York, licensed in New York (225204) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Medical University Of South Carolina College Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
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. Daniel Sloniewsky M.d. 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 Reassignment
Medicare enrollment records show Daniel Sloniewsky reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stony Brook, NY 11794
- Reassigned Medicare billing, New York enrollment
- 191 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.
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 Daniel Sloniewsky's NPI number?
The NPI number for Daniel Sloniewsky is 1992748842. It was assigned to this individual provider in the NPPES registry on June 14, 2006.
Where is Daniel Sloniewsky located?
Daniel Sloniewsky practices at University Hospital, L11, Stony Brook, NY 11794. The listed phone number is (631) 444-2725.
What is Daniel Sloniewsky's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.
Is Daniel Sloniewsky enrolled in Medicare?
Yes. Daniel Sloniewsky 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 organization bills Medicare for Daniel Sloniewsky's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Daniel Sloniewsky reassigns Medicare benefits to Stony Brook Children's Service, University Faculty Practice Corporatio (Stony Brook, NY). The 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 Daniel Sloniewsky'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 Daniel Sloniewsky was last updated on April 28, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Daniel Sloniewsky, M.D. · NPI 1992748842
Pediatric Critical Care Medicine physician in Stony Brook, New York. Individual provider, active in the CMS NPPES registry since June 14, 2006.
## Identity
- **NPI:** 1992748842 (Entity type: Individual)
- **Enumerated:** June 14, 2006
- **Primary specialty:** Pediatrics - Pediatric Critical Care Medicine · taxonomy 2080P0203X
- **State license:** 225204 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** UNIVERSITY HOSPITAL, L11, Stony Brook, NY 11794-0001
- **Phone:** (631) 444-2725
## 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:** Stony Brook Children's Service, University Faculty Practice Corporatio (NPI 1083660575, Stony Brook, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical University Of South Carolina College Of Medicine, class of 1996
## Record status
- **NPPES last updated:** April 28, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1992748842) · Data from the CMS NPPES public registry.