MRS. CLARISSA LYNN BROWN NP
NPI 1790069300
Nurse Practitioner - Psychiatric/Mental Health in Deer Park, NY
About Mrs. Clarissa Lynn Brown Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CLARISSA LYNN BROWN NP (NPI 1790069300) is an individual psychiatric/mental health provider in Deer Park, New York, licensed in New York (402845) and active in the NPI registry since September 2011. She is enrolled in Medicare PECOS, is affiliated with St Charles Hospital, and maintains a secondary practice location in Smithtown.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Mrs. Clarissa Lynn Brown Np 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 Clarissa Brown reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Islip, NY 11795
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Samaritan Medical Services PC
- 209 clinicians in this Medicare group
Amityville, NY 11701
- Reassigned Medicare billing, New York enrollment
- 27 clinicians in this Medicare group
Miller Place, NY 11764
- Reassigned Medicare billing, New York enrollment
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 2
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Charles Hospital
Acute Care Hospitals · Port Jefferson, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11729 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DEER PARK, NY 11729
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 Clarissa Brown's NPI number?
The NPI number for Clarissa Brown is 1790069300. It was assigned to this individual provider in the NPPES registry on September 30, 2011.
Where is Clarissa Brown located?
Clarissa Brown practices at 770 Grand Blvd, Deer Park, NY 11729. The listed phone number is (631) 896-2512.
What is Clarissa Brown's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Clarissa Brown enrolled in Medicare?
Yes. Clarissa Brown 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 Clarissa Brown's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clarissa Brown reassigns Medicare benefits to 3 organizations: Samaritan Medical Services, P.C. (West Islip, NY), South Shore Magnetic Resonance Imaging Associates PC (Amityville, NY) and Compassionate Np In Psychiatry PLLC (Miller Place, 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 Clarissa Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Clarissa Brown affiliated with any hospitals?
According to CMS data, Clarissa Brown is affiliated with St Charles Hospital.
When was this NPI record last updated?
The NPPES record for Clarissa Brown was last updated on January 28, 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.
# Mrs. Clarissa Lynn Brown, NP · NPI 1790069300
Psychiatric/Mental Health physician in Deer Park, New York. Individual provider, active in the CMS NPPES registry since September 30, 2011.
## Identity
- **NPI:** 1790069300 (Entity type: Individual)
- **Enumerated:** September 30, 2011
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 402845 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 770 GRAND BLVD, Deer Park, NY 11729-5750
- **Phone:** (631) 896-2512
## 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): Samaritan Medical Services, P.C. (NPI 1124184544, West Islip, NY); South Shore Magnetic Resonance Imaging Associates PC (NPI 1194736199, Amityville, NY); Compassionate Np In Psychiatry PLLC (NPI 1306663125, Miller Place, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** January 28, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1790069300) · Data from the CMS NPPES public registry.