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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM K BOSS MD
NPI 1598769317
Specialist in Hackensack, NJ

Active since June 09, 2005
20 PROSPECT AVE, STE 600, HACKENSACK, NJ 07601(201) 488-1035(201) 489-6966 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. William K Boss Md NPPES

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

DR. WILLIAM K BOSS MD (NPI 1598769317) is an individual specialist in Hackensack, New Jersey, licensed in New Jersey (MA33810) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1598769317
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. WILLIAM K BOSSCredential: MD
Location Address20 PROSPECT AVE, STE 600Hackensack, NJ 07601-1962
Mailing Address20 Prospect Ave, Ste 600Hackensack, NJ 07601-1962 · (201) 488-1035 · Fax (201) 489-6966
Phone(201) 488-1035
Fax(201) 489-6966
Sole ProprietorNo
Enumeration DateJune 9, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1598769317 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NJ · MA33810
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
20 PROSPECT AVE, Hackensack, NJ 07601
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Other Providers at the Same Location NPPES 20

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

DR. CHRISTOPHER M. SHAARI M.D.
Otolaryngology
20 PROSPECT AVE, SUITE 712
HACKENSACK, NJ 07601
Bergen County (201) 342-8060
MS. ELIZABTH ANNE BILOTTI APN-BC
Nurse Practitioner (Adult Health)
20 PROSPECT AVE, THE CANCER CENTER AT HACKENSACK UNIVERSITY MEDICAL CTR.
HACKENSACK, NJ 07601
Bergen County (201) 996-5900
DR. JOSEPH B. GLOWACKI DO
Internal Medicine (Infectious Disease)
20 PROSPECT AVE, STE 507
HACKENSACK, NJ 07601
Bergen County (201) 487-4088
EPILEPSY & NEUROPHYSIOLOGY MEDICAL CONSULTANTS PA
Psychiatry & Neurology (Neurology)
20 PROSPECT AVE, SUITE 800
HACKENSACK, NJ 07601
Bergen County (201) 996-3205
JEROME F LEVINE M.D.
Internal Medicine (Infectious Disease)
20 PROSPECT AVE, SUITE 507
HACKENSACK, NJ 07601
Bergen County (201) 487-4088
MS. THERESA M GABAY APRN, BC
Nurse Practitioner (Family)
20 PROSPECT AVE, SUITE 800
HACKENSACK, NJ 07601
Bergen County (201) 996-5251
LISA HA
Nurse Practitioner (Acute Care)
20 PROSPECT AVE
HACKENSACK, NJ 07601
Bergen County (551) 996-2000
THE CENTER FOR ADVANCED NEUROSURGERY, LLC
Neurological Surgery
20 PROSPECT AVE, SUITE 811
HACKENSACK, NJ 07601
Bergen County (201) 881-0700

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 Boss's NPI number?

The NPI number for William Boss is 1598769317. It was assigned to this individual provider in the NPPES registry on June 9, 2005.

Where is William Boss located?

William Boss practices at 20 Prospect Ave Ste 600, Hackensack, NJ 07601. The listed phone number is (201) 488-1035.

What is William Boss's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for William Boss was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.