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

Mrs. Donna Marie Grennan, SLP

Individual provider Speech-Language Pathologist · NPI 1538446836

Mrs. Donna Marie Grennan, SLP is a Speech-Language Pathologist in Wantagh, New York. Licensed in New York. Registered with an NPI since 2011.

Licensed in
NY
In the registry since
2011
What do these letters mean?
SLP — Speech-Language Pathologist
Treats speech, language and swallowing disorders.

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Practice location Address checks out

2850 N Jerusalem Rd
Wantagh, NY 11793-1125
Phone: (516) 396-2900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X · Licence 009726 (NY)

Record details

NPI number1538446836
Entity typeIndividual (Type 1)
GenderFemale
Credentials SLP
Sole proprietorNo
NPI enumeratedNovember 15, 2011
Last updated in NPPESNovember 15, 2011

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