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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

STEPHANIE RATZKE NP
NPI 1942123864
Pediatrics - Pediatric Hematology-Oncology in Stony Brook, NY

Active since July 30, 2026
101 NICOLLS RD, STONY BROOK, NY 11794(631) 338-7728 Get Directions Write a Review

NPPES record added: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Stephanie Ratzke Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHANIE RATZKE NP (NPI 1942123864) is an individual pediatric hematology-oncology provider in Stony Brook, New York, licensed in New York (383948) and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1942123864
Entity TypeIndividualFemale
Primary Taxonomy2080P0207X
Provider Legal NameSTEPHANIE RATZKECredential: NP
Location Address101 NICOLLS RDStony Brook, NY 11794-0001
Mailing Address100 Halesite DrSound Beach, NY 11789-2223 · (631) 338-7728
Phone(631) 338-7728
Sole ProprietorNo
Enumeration DateJuly 30, 2026
NPPES CertifiedJuly 30, 2026
✔ NPI 1942123864 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in NY · 383948
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
101 NICOLLS RD, Stony Brook, NY 11794
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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.

NARINDER SINGH M.D.
Internal Medicine
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 444-4000
DR. KANHAI FARRAKHAN MD
Internal Medicine (Gastroenterology)
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 444-0580
MS. HAYLEY ALEXANDRA MENA LMSW
Social Worker (Clinical)
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (516) 761-4107
MRS. HEATHER MARIE CALIGIURI ANP
Nurse Practitioner (Adult Health)
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 631-4449
MR. SAM TARIK MENDOUNE I NP
Nurse Practitioner (Adult Health)
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 335-1657
ALEXIE LESSING
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 444-4686
DR. BENJAMIN RISMANY MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 444-1791
JULIA RYAN MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD
STONY BROOK, NY 11794
Suffolk County (631) 689-8333

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 Ratzke's NPI number?

The NPI number for Stephanie Ratzke is 1942123864. It was assigned to this individual provider in the NPPES registry on July 30, 2026.

Where is Stephanie Ratzke located?

Stephanie Ratzke practices at 101 Nicolls Rd, Stony Brook, NY 11794. The listed phone number is (631) 338-7728.

What is Stephanie Ratzke's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

When was this NPI record last updated?

The NPPES record for Stephanie Ratzke was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.