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WILLIAM JAMES GROSS M.D.
NPI 1982665907
Psychiatry & Neurology - Addiction Psychiatry in Brooklyn, NY

Active since March 29, 2006
591 KINGSTON AVE, KINGS COUNTY HOSP., BROOKLYN, NY 11203(718) 245-4871(718) 245-4890 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About William James Gross M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM JAMES GROSS M.D. (NPI 1982665907) is an individual addiction psychiatry provider in Brooklyn, New York, licensed in New York (169896-1) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1982665907
Entity TypeIndividualMale
Primary Taxonomy2084P0802X
Provider Legal NameWILLIAM JAMES GROSSCredential: M.D.
Location Address591 KINGSTON AVE, KINGS COUNTY HOSP.Brooklyn, NY 11203-1707
Mailing Address225 Lincoln PlBrooklyn, NY 11217-3746 · (718) 638-6958
Phone(718) 245-4871
Fax(718) 245-4890
Sole ProprietorNo
Enumeration DateMarch 29, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1982665907 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · Addiction PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0802X
License✔ Licensed in NY · 169896-1
Definition
Addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.
Also ListedPsychiatry & Neurology · Addiction MedicineTaxonomy 2084A0401X · License 169896-1 (NY)
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 169896-1 (NY)

Other Identifiers 2

Medicaid00246117NY
Other186BNINY · Insurance Provider

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FELICITY A WELCH LMSW
Social Worker
591 KINGSTON AVE
BROOKLYN, NY 11203
Kings County (718) 245-3489
DR. KHEMDAT UMADAT M.D.
Psychiatry & Neurology (Psychiatry)
591 KINGSTON AVE
BROOKLYN, NY 11203
Kings County (718) 245-2629

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Gross's NPI number?

The NPI number for William Gross is 1982665907. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is William Gross located?

William Gross practices at 591 Kingston Ave Kings County Hosp., Brooklyn, NY 11203. The listed phone number is (718) 245-4871.

What is William Gross's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.

When was this NPI record last updated?

The NPPES record for William Gross was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.