Walter P Signorelli

Walter P Signorelli

2020 Maple Hill Street, #1255
Yorktown Heights, NY 10598
Office: 914-245-5904
Fax: 914-962-1904

I am a retired member of the New York City Police Department (NYPD), having served for more than (31) thirty-one years. Currently, I am a practicing attorney, an adjunct professor of law and police science at John Jay College of Criminal Justice, and an author. I have published three books: The Crisis of Police Liability Lawsuits, 2006; The Constable Has Blundered, 2010 (Carolina Academic Press); Criminal Law, Procedure, and Evidence, 2011 (Taylor&Francis, CRC Press).

During my tenure in the NYPD, I held the ranks of Police Officer, Sergeant, Lieutenant, Captain, Deputy Inspector, and Inspector, and served in numerous capacities, including patrol officer, patrol sergeant, anti-crime sergeant, Lieutenant tour commander, Executive Captain of the 46th Precinct, Bronx; Commanding Officer, Manhattan North Public Morals Division; Commanding Officer of the 79th Precinct in Bedford-Stuyvesant, Brooklyn; Commanding Officer, Staff Services Section of the Personnel Bureau; Commanding Officer, 24th Precinct., Upper Manhattan; Executive Officer, Bronx Narcotics Division; Commanding Officer, License Division; Executive Officer, Narcotics Division; Executive Officer, Manhattan North Narcotics Initiative; and Executive Officer, Brooklyn South Detective Division.
In these positions, I conducted or supervised thousands of undercover and overt investigations, applications for warrants, the execution of warrants, and arrests. As Executive Officer for the Narcotics Division, in addition to other duties, I was responsible for the supervision of undercover training, and oversaw activities at the High-Intensity-Drug-Trafficking-Area (HIDTA) training center, which is a federally funded program designed to standardize drug enforcement procedures and share information among the various law enforcement jurisdictions in a geographical area. Regarding vehicle-related issues, I conducted or supervised numerous investigations of vehicle accidents, police emergency vehicles accidents, police vehicle pursuits, and I was a member of various Accident Review Boards. Those boards review the facts of police vehicle accidents and vehicle pursuits and make determinations whether the operators of the police vehicles involved acted within department guidelines. For almost twenty years, from December 1979 to October 1998, I served as a Captain, Deputy Inspector, or Inspector. In those ranks, in addition my designated assignments, I performed the “Duty,” which entailed covering a borough and responding to and investigating unusual or serious incidents that occurred therein, including hostage situations, barricaded suspect situations, emotionally disturbed persons, and any police-related shootings. In those twenty years, I responded to hundreds of such situations.

In addition to direct involvement in the response to and investigation of police shootings, I was a member of various Firearms Discharge Review Boards, at both the Borough and Chief of Department levels. Those boards reviewed the facts of police shootings and made determinations whether the shootings were or were not within department guidelines.

Since my retirement from NYPD, I have been retained as a consultant by both plaintiffs and defense in a number of police liability cases, and have testified as a police procedures expert in both State and Federal courts.

Areas of Expertise
  • Deadly/Excessive Force
  • Drug Enforcement
  • Law Enforcement
  • Police Procedures

Expert Background
Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: St. John’s University School of Law
Juris Doctorate, Cum Laude, 1983
Awards: Criminal Law & Criminal Procedure

Columbia University School of Management
Police Management Institute, 1992

John Jay College of Criminal Justice, 1977

Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: New York State Bar Association
Westchester County Bar Association
New York State Defenders Association
American Society of Professional Law Enforcement
Columbia University, Police Management Institute
Academy of Criminal Justice Sciences
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: Adjunct and Assistant Professor at John Jay College of Criminal Justice and St. John's University. Courses taught: Constitutional Law, Criminal Law,
Evidence, Criminal Procedure Law, Criminal Investigations, Police Administration, Organized Crime

Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No
Q: On how many occasions have you been retained as an expert?
A: 150
Q: For what area(s) of expertise have you been retained as an expert?
A: Police procedures
Q: In what percentage of your cases were you retained by the plaintiff?
A: 75
Q: In what percentage of your cases were you retained by the defendant?
A: 25
Q: On how many occasions have you had your deposition taken?
A: 10
Q: When was the last time you had your deposition taken?
A: 2016
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: 25
Q: On how many occasions have you testified as an expert in court or before an arbitrator?
A: 25
Q: For how many years have you worked with the legal industry as an expert?
A: 17
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: consulting
Q: What is your hourly rate to consult with an attorney?
A: $300 per hour.
Q: What is your hourly rate to review documents?
A: $300 per hour.
Q: What is your hourly rate to provide deposition testimony?
A: $2400 per day or part thereof.
Q: What is your hourly rate to provide testimony at trial?
A: $2400 per day or part thereof.


References upon request.