Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Stephanie Ratzke, NP

Individual provider Pediatric Hematology & Oncology Physician · NPI 1942123864

Stephanie Ratzke, NP is a Pediatric Hematology & Oncology Physician in Stony Brook, New York. Licensed in New York. Registered with an NPI since 2026.

Licensed in
NY
In the registry since
2026
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

101 Nicolls Rd
Stony Brook, NY 11794-0001
Phone: (631) 338-7728
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Hematology & Oncology Physician (primary) Taxonomy 2080P0207X · Licence 383948 (NY)

Record details

NPI number1942123864
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedJuly 30, 2026
Last updated in NPPESJuly 30, 2026
Certification dateJuly 30, 2026

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