MELISSA J O'SULLIVAN N P
NPI 1083752034
Nurse Practitioner - Adult Health in Rochester, NY
About Melissa J O'sullivan N P NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELISSA J O'SULLIVAN N P (NPI 1083752034) is an individual adult health provider in Rochester, New York, licensed in New York (F300749) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Melissa J O'sullivan N P is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Melissa O'sullivan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rochester, NY 14618
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Western New York Medical Practice PC
- 1,030 clinicians in this Medicare group
Rochester, NY 14607
- Reassigned Medicare billing, New York enrollment
- 2,285 clinicians in this Medicare group
Clifton Springs, NY 14432
- Reassigned Medicare billing, New York enrollment
- 872 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14618 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
ROCHESTER, NY 14618
ROCHESTER, NY 14618
ROCHESTER, NY 14618
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 Melissa O'sullivan's NPI number?
The NPI number for Melissa O'sullivan is 1083752034. It was assigned to this individual provider in the NPPES registry on February 2, 2007.
Where is Melissa O'sullivan located?
Melissa O'sullivan practices at 1870 Winton Rd S Bldg 4 Suite 1, Rochester, NY 14618. The listed phone number is (585) 473-0495.
What is Melissa O'sullivan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Melissa O'sullivan enrolled in Medicare?
Yes. Melissa O'sullivan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Melissa O'sullivan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melissa O'sullivan reassigns Medicare benefits to 3 organizations: Western New York Medical Practice, P.C. (Rochester, NY), Rochester General Hospital (Rochester, NY) and Clifton Springs Sanitarium Co (Clifton Springs, 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 Melissa O'sullivan'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 Melissa O'sullivan was last updated on October 27, 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.
# Melissa J O'sullivan, N P · NPI 1083752034
Adult Health physician in Rochester, New York. Individual provider, active in the CMS NPPES registry since February 2, 2007.
## Identity
- **NPI:** 1083752034 (Entity type: Individual)
- **Enumerated:** February 2, 2007
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** F300749 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1870 WINTON RD S, BLDG 4 SUITE 1, Rochester, NY 14618-3916
- **Phone:** (585) 473-0495 · **Fax:** (585) 442-0750
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Western New York Medical Practice, P.C. (NPI 1891467486, Rochester, NY); Rochester General Hospital (NPI 1760557656, Rochester, NY); Clifton Springs Sanitarium Co (NPI 1366505463, Clifton Springs, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1083752034) · Data from the CMS NPPES public registry.