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

Ross Matthew Grunwald I

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1790277762

Ross Matthew Grunwald I is an Addiction (Substance Use Disorder) Counselor in New York, New York. Practices as a sole proprietor. Registered with an NPI since 2018.

In the registry since
2018

Practice location Address checks out

19 Union Sq W
New York, NY 10003-3304
Phone: (212) 627-9600
Fax: (212) 627-4040
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1790277762
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 5, 2018
Last updated in NPPESJune 5, 2018

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