About Us

MacDonald Investigations & Protection, established in March of 2015, is located in Pembroke Massachusetts. We’re a private investigative firm that brings talent and experience to solving problems that confront it’s clients. Joseph MacDonald and staff are dedicated to investigations and bringing the facts of the case to our clients.

We take great pride in our personal and dedicated approach to the services we provide. We have a part-time staff consisting of retired law-enforcement state and federal officers. Our staff is knowledgable and bilingual. -Se hable espanol



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CPCS Vendor of Massachusetts

Joseph MacDonald

Joseph MacDonald is the President of MacDonald Investigations, Consulting and Protection. Holding degrees in the criminal justice field including a Master of Science in Criminal Justice from Western New England College; a Bachelor of Science in Criminal Justice from Curry College.

Mr. MacDonald had a highly decorated thirty year career with the Boston Police Department serving in various districts and units, retiring at the rank of Sergeant Detective on February 27,2015. During his career he received dozens of commendations, including the medal of honor from the Boston Police Department and the Hanna Award from the Commonwealth of Massachusetts, commendations from The United States Attorney in Boston, FBI Special Agent in Charge of the Boston Office, as well as a number of Senators, Representatives, Congressmen, many local officials, community groups and citizens.

From 2008 until February 2015 Mr. MacDonald served as a lead investigator in police involved shootings. Also assisted in the training of the officers assigned to the Firearms Discharge Investigation Team.

From 2009 to 2014 was assigned to the Homicide Unit as a squad leader and part of the team that developed new protocols for the Boston Homicide Unit.

From May 2010-July2010, Mr MacDonald investigated the homicide of a young boy in the Heath Street area, as a result of this investigation the first court ordered electronic surveillance on a gang related Homicide,was carried out. This warrant was upheld by the Supreme Judicial Court in Comm v. Hearns. This case led the suspect Timothy Hearns to plead guilty to 35 years. No appeal.

Mr. MacDonald has served in the United States Attorney’s Office Organized Crime Strike Force, FBI Organized Crime Unit and the DEA. While assigned to DEA, Mr. MacDonald took part in an  investigation and wiretap that led to the seizure of 124 Kilos of Cocaine, coming from Mexico to Boston. Mr. MacDonald received a commendation from the DEA for this investigation.

Mr. MacDonald has also received the following specialized training.

The Human Dynamics and The Investigation of the Use of Deadly Force
Force Science Institute October 2010

Certificate in Death Investigation
University Of New Haven-New Haven, CT 2007

Weapons of Mass Destruction Protection & Decontamination for Law EnforcementTraining of Critical Incidents
DelValle Institute For Emergency Preparedness

Characteristics of an Armed Gun Man
Bureau of Alcohol, Tobacco, Firearms and Explosives

Narcotics Enforcement
Drug Enforcement Administration

Collection and Preservation of Physical Evidence / Fingerprinting and Basic Classification of Fingerprints
Federal Bureau of Investigation

Rape Investigation (Certified Rape Investigator)
Massachusetts Criminal Justice Training Council

Certification Course in Search Warrants
Boston Police Academy

Certification Course on Gypsy and other Traveling Criminal Organizations
New England State Police Information Network

Certification Course on Narcotics Identification
ODV Incorporated

Certification Course on Interview and Interrogation
John E. Reid & Associates Inc.

Certification Course on the Use of a Sound Meter
City of Boston Environment Department

Managing with Integrity and Effectiveness
Regional Community Policing Institute for New England

It is with great pleasure that I welcome Joe Sirignano to MacDonald Investigations. Joe will be a great asset with his years of experience in investigations and surveillance.

Joseph G. Sirignano

Joseph G. Sirignano comes to MacDonald Investigations with great Expertise in Investigations and Surveillance. He is a highly decorated Detective.

Joe retired from the Boston Police Department with 41 years of experience, 21 of those years in the Bureau of Investigative Services.

He has received 5 Awards from the United States Department of Justice for his Investigative skills.

Joe has also been awarded Numerous New England Narcotic Enforcement Officer awards for investigations.

The Federal Bureau of Investigation has recognized him, for his outstanding Investigative Capability.

Joe has been the recipient of several awards from the Boston Police Depart for Meritorious police duty.

Client Testimonials