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

Danielle Marie Williamson, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1821707233

Danielle Marie Williamson, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner in Hauppauge, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2022
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

150 Motor Pkwy Ste 401
Hauppauge, NY 11788-5108
Phone: (631) 885-1929
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence F404327-01 (NY)

Record details

NPI number1821707233
Entity typeIndividual (Type 1)
GenderFemale
Credentials PMHNP-BC
Sole proprietorYes
NPI enumeratedNovember 15, 2022
Last updated in NPPESJanuary 4, 2026
Certification dateJanuary 4, 2026

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