MS. MARSHA DESROSIERS PMHNP-BC
NPI 1033866496
Nurse Practitioner - Psychiatric/Mental Health in Uniondale, NY
About Ms. Marsha Desrosiers Pmhnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARSHA DESROSIERS PMHNP-BC (NPI 1033866496) is an individual psychiatric/mental health provider in Uniondale, New York, licensed in New York (404053) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Ms. Marsha Desrosiers Pmhnp-bc 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 Marsha Desrosiers reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Uniondale, NY 11556
- Reassigned Medicare billing, New York enrollment
- 2 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11556 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
UNIONDALE, NY 11556
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 Marsha Desrosiers's NPI number?
The NPI number for Marsha Desrosiers is 1033866496. It was assigned to this individual provider in the NPPES registry on March 7, 2022.
Where is Marsha Desrosiers located?
Marsha Desrosiers practices at 405 Rxr Plz, Uniondale, NY 11556. The listed phone number is (516) 509-3742.
What is Marsha Desrosiers's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Marsha Desrosiers enrolled in Medicare?
Yes. Marsha Desrosiers 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 Marsha Desrosiers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marsha Desrosiers reassigns Medicare benefits to Blackstone Np In Psychiatry PLLC (Uniondale, 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 Marsha Desrosiers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marsha Desrosiers accept?
Health plans from Oscar Health list Marsha Desrosiers as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Marsha Desrosiers was last updated on January 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Ms. Marsha Desrosiers, PMHNP-BC · NPI 1033866496
Psychiatric/Mental Health physician in Uniondale, New York. Individual provider, active in the CMS NPPES registry since March 7, 2022.
## Identity
- **NPI:** 1033866496 (Entity type: Individual)
- **Enumerated:** March 7, 2022
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 404053 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 405 RXR PLZ, Uniondale, NY 11556-3811
- **Phone:** (516) 509-3742
## 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:** Blackstone Np In Psychiatry PLLC (NPI 1972360006, Uniondale, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** January 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1033866496) · Data from the CMS NPPES public registry.