Individual Healthcare Provider
Zachary Benjamin Koloff, MD
Provider's NPPES record last updated: September 9, 2019
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1770996175
- Primary Specialty
- Urology
- Practice Location
- Stoneham, Massachusetts
- Sole Proprietor
- Yes
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 19, 2026, 5:07 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Urology
Allopathic & Osteopathic Physicians
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Taxonomy code 208800000X Student in an Organized Health Care Education/Training Program
Student, Health Care
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Taxonomy code 390200000X
Provider-Reported License Information
- Urology (Massachusetts)
- 279101
- Student in an Organized Health Care Education/Training Program (Michigan)
- 4301105086
Practice Locations
Practice Location
3 Woodland Rd Ste 216
Stoneham, Massachusetts 02180
Phone: (781) 979-0661
Additional Practice Location
1500 Medical Ctr Dr
3875 Taubman Ctr, Spc 5330
Ann Arbor, Michigan 48109-5000
Phone: (734) 936-4000
Record Information
- Enumeration Date
- June 4, 2014
- Provider's NPPES Record Last Updated
- September 9, 2019
- NPISignal NPPES Dataset
- August 2026
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