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

MS. Margaret L De Haan

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1699801282

MS. Margaret L De Haan is an Addiction (Substance Use Disorder) Counselor in Brooklyn, New York. Practices as a sole proprietor. Licensed in Michigan and New York.

Licensed in
MI, NY
In the registry since
2007
Specialties on file
3

Practice location Address checks out

1463 Flatbush Ave
Brooklyn, NY 11210-2428
Phone: (718) 951-9009
Fax: (718) 951-9719
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 6802077521 (MI)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 19325 (NY)
Mental Health Counselor Taxonomy 101YM0800X · Licence 000280 (NY)

Record details

NPI number1699801282
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedFebruary 26, 2007
Last updated in NPPESSeptember 11, 2025

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