BRIAN SLEPIAN MD
NPI 1649288507
Anesthesiology in Smithtown, NY
About Brian Slepian Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRIAN SLEPIAN MD (NPI 1649288507) is an individual anesthesiology provider in Smithtown, New York, licensed in New York (1856194) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Brian Slepian Md 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
3Medicare enrollment records show Brian Slepian reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Smithtown, NY 11787
- Reassigned Medicare billing, New York enrollment
- 12 clinicians in this Medicare group
Jericho, NY 11753
- Reassigned Medicare billing, New York enrollment
- 413 clinicians in this Medicare group
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 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 4
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SMITHTOWN, NY 11787
SMITHTOWN, NY 11787
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 Brian Slepian's NPI number?
The NPI number for Brian Slepian is 1649288507. It was assigned to this individual provider in the NPPES registry on August 4, 2006.
Where is Brian Slepian located?
Brian Slepian practices at 989 W Jericho Tpke, Smithtown, NY 11787. The listed phone number is (631) 864-7100.
What is Brian Slepian's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Brian Slepian enrolled in Medicare?
Yes. Brian Slepian 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 Brian Slepian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Slepian reassigns Medicare benefits to 3 organizations: Manhattan Medical Practice PC (Smithtown, NY), Optum Urgent Care, PLLC (Jericho, NY) and Optum Medical Care, P.C. (Mount Kisco, NY). 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 Brian Slepian'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 Brian Slepian was last updated on June 25, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Brian Slepian, MD · NPI 1649288507
Anesthesiology physician in Smithtown, New York. Individual provider, active in the CMS NPPES registry since August 4, 2006.
## Identity
- **NPI:** 1649288507 (Entity type: Individual)
- **Enumerated:** August 4, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 1856194 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 989 W JERICHO TPKE, Smithtown, NY 11787
- **Phone:** (631) 864-7100 · **Fax:** (631) 864-7129
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Manhattan Medical Practice PC (NPI 1699922294, Smithtown, NY); Optum Urgent Care, PLLC (NPI 1285975797, Jericho, NY); Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1987
## Record status
- **NPPES last updated:** June 25, 2008
- **Other identifiers:** Medicare PIN BS011G2410 (NY); Other 050050677 (NY); Medicare UPIN F20927; and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1649288507) · Data from the CMS NPPES public registry.