MS. JANELLE LYNN TYCHNOWITZ RN, CPN, PNP
NPI 1184857336
Nurse Practitioner - Pediatrics in Stony Brook, NY
About Ms. Janelle Lynn Tychnowitz Rn, Cpn, Pnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. JANELLE LYNN TYCHNOWITZ RN, CPN, PNP (NPI 1184857336) is an individual pediatrics provider in Stony Brook, New York, licensed in New York (F382571-1) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Janelle Lynn Tychnowitz Rn, Cpn, Pnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Janelle Tychnowitz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stony Brook, NY 11794
- Reassigned Medicare billing, New York enrollment
- 191 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 11790 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Janelle Tychnowitz's NPI number?
The NPI number for Janelle Tychnowitz is 1184857336. It was assigned to this individual provider in the NPPES registry on September 3, 2009.
Where is Janelle Tychnowitz located?
Janelle Tychnowitz practices at PO Box 1559, Stony Brook, NY 11790. The listed phone number is (631) 444-0650.
What is Janelle Tychnowitz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Janelle Tychnowitz enrolled in Medicare?
Yes. Janelle Tychnowitz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Janelle Tychnowitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Janelle Tychnowitz reassigns Medicare benefits to Stony Brook Children's Service, University Faculty Practice Corporatio (Stony Brook, 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 Janelle Tychnowitz'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 Janelle Tychnowitz was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Janelle Lynn Tychnowitz, RN, CPN, PNP · NPI 1184857336
Pediatrics physician in Stony Brook, New York. Individual provider, active in the CMS NPPES registry since September 3, 2009.
## Identity
- **NPI:** 1184857336 (Entity type: Individual)
- **Enumerated:** September 3, 2009
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** F382571-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** PO BOX 1559, Stony Brook, NY 11790-0989
- **Phone:** (631) 444-0650
## 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:** Stony Brook Children's Service, University Faculty Practice Corporatio (NPI 1083660575, Stony Brook, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** March 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1184857336) · Data from the CMS NPPES public registry.