STEPHANIE B KELLER FNP
NPI 1578366191
Nurse Practitioner - Family in Smithtown, NY
About Stephanie B Keller Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHANIE B KELLER FNP (NPI 1578366191) is an individual family provider in Smithtown, New York, licensed in New York (F355859-01) and active in the NPI registry since March 2025. She is enrolled in Medicare PECOS, is affiliated with Good Samaritan Hospital Medical Center, and is a graduate of Other (2024).
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
Stephanie B Keller Fnp 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
2Medicare enrollment records show Stephanie Keller reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bay Shore, NY 11706
- Reassigned Medicare billing, New York enrollment
- 11 clinicians in this Medicare group
West Sayville, NY 11796
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Chs Physician Partners PC
- 944 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Good Samaritan Hospital Medical Center
Acute Care Hospitals · West Islip, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11787 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Stephanie Keller's NPI number?
The NPI number for Stephanie Keller is 1578366191. It was assigned to this individual provider in the NPPES registry on March 29, 2025.
Where is Stephanie Keller located?
Stephanie Keller practices at 269 E Main St Bldg D, Smithtown, NY 11787. The listed phone number is (631) 366-4333.
What is Stephanie Keller's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Stephanie Keller enrolled in Medicare?
Yes. Stephanie Keller 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 Stephanie Keller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Keller reassigns Medicare benefits to 2 organizations: Premiere Cardiology PLLC (Bay Shore, NY) and Chs Physician Partners, P.C (West Sayville, 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 Stephanie Keller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Stephanie Keller affiliated with any hospitals?
According to CMS data, Stephanie Keller is affiliated with Good Samaritan Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Stephanie Keller was last updated on October 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.
# Stephanie B Keller, FNP · NPI 1578366191
Family physician in Smithtown, New York. Individual provider, active in the CMS NPPES registry since March 29, 2025.
## Identity
- **NPI:** 1578366191 (Entity type: Individual)
- **Enumerated:** March 29, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** F355859-01 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 269 E MAIN ST BLDG D, Smithtown, NY 11787-2835
- **Phone:** (631) 366-4333
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Premiere Cardiology PLLC (NPI 1184858151, Bay Shore, NY); Chs Physician Partners, P.C (NPI 1679823512, West Sayville, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** October 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1578366191) · Data from the CMS NPPES public registry.