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

William James Gross, MD

Individual provider Addiction Medicine (Psychiatry & Neurology) Physician · NPI 1982665907

William James Gross, MD is an Addiction Medicine (Psychiatry & Neurology) Physician in Brooklyn, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

591 Kingston Ave Kings County Hosp
Brooklyn, NY 11203-1707
Phone: (718) 245-4871
Fax: (718) 245-4890
Show map & directions

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

Specialties & licences

Addiction Psychiatry Physician (primary) Taxonomy 2084P0802X · Licence 169896-1 (NY)
Addiction Medicine (Psychiatry & Neurology) Physician Taxonomy 2084A0401X · Licence 169896-1 (NY)
Psychiatry Physician Taxonomy 2084P0800X · Licence 169896-1 (NY)

Record details

NPI number1982665907
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2006
Last updated in NPPESSeptember 11, 2025

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