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

Individual provider Mental Health Counselor · NPI 1639762909

Diana Noelle Leondis, LMHC is a Mental Health Counselor in Garden City, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2021
What do these letters mean?
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.

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Practice location Address checks out

142 Tullamore Rd
Garden City, NY 11530-1139
Phone: (516) 650-3550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 011029 (NY)

Record details

NPI number1639762909
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMHC
Sole proprietorYes
NPI enumeratedFebruary 17, 2021
Last updated in NPPESFebruary 24, 2023
Certification dateFebruary 24, 2023

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