NELSON BARCELON MD
NPI 1003928441
Anesthesiology in Northport, NY
About Nelson Barcelon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NELSON BARCELON MD (NPI 1003928441) is an individual anesthesiology provider in Northport, New York, licensed in New York (246401-1) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1991).
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
Nelson Barcelon 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 Reassignment
Medicare enrollment records show Nelson Barcelon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
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 5
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORTHPORT, NY 11768
NORTHPORT, NY 11768
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 Nelson Barcelon's NPI number?
The NPI number for Nelson Barcelon is 1003928441. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Nelson Barcelon located?
Nelson Barcelon practices at 79 Middleville Rd, Northport, NY 11768. The listed phone number is (631) 261-4400.
What is Nelson Barcelon's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Nelson Barcelon enrolled in Medicare?
Yes. Nelson Barcelon 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 Nelson Barcelon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nelson Barcelon reassigns Medicare benefits to Optum Medical Care, P.C. (Mount Kisco, 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 Nelson Barcelon'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 Nelson Barcelon was last updated on April 11, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Nelson Barcelon, MD · NPI 1003928441
Anesthesiology physician in Northport, New York. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1003928441 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 246401-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 79 MIDDLEVILLE RD, Northport, NY 11768-2200
- **Phone:** (631) 261-4400 · **Fax:** (631) 266-6712
## 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:** Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1991
## Record status
- **NPPES last updated:** April 11, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1003928441) · Data from the CMS NPPES public registry.