Dr. Gregory I. Mack, Ph.D., SAP is a New York State Licensed Clinical and Forensic Psychologist and a Substance Abuse Professional. He is Owner/CEO of Clinical, Police, & Forensic Psychological Services PLLC and has been providing clinical treatment and forensic consultancy services for over 20 years.
Dr. Mack retired from the New York City Police Department at the rank of Detective Specialist 3rd Grade/Police Psychologist after 20 years of service. He worked in the Midtown North Precinct, the Mounted Unit, and in the Medical Division. Dr. Mack conducted fitness-for-duty evaluations, disability evaluations, pre-employment psychological evaluations, critical incident stress debriefing and counseling services to police officers who were involved in life threatening situations (e.g., shootings, suicide by cop, 9/11 terror attack) and or witnessed tragedies (e.g., police suicide; SIDS deaths). He served as Program Manager /Supervisory Psychologist for the Franklin Deleno Roosevelt (Montrose) Veteran’s Administration Hospital’s Residential Substance Abuse Program and as a Staff Psychologist within the VA’s Residential PTSD Treatment program. He was also a Conductor and a Train Operator for the New York City Transit Authority.
Dr. Mack completed a Master of Arts degree in forensic psychology at John Jay College, and a Master of Arts and a Doctor of Philosophy degree in clinical psychology at St. John’s University. He completed the NYU-Bellevue Clinical Psychology Internship Program with a specialization in Forensic Psychology at Kirby Forensic Psychiatric Center, a 200-bed maximum security forensic hospital.
Dr. Mack has advanced evidence-based training in the treatment of major depressive disorder and posttraumatic stress; he specializes in treating people of color, first responders, military personnel/veterans, teachers, transportation employees and trauma survivors. Dr. Mack also provides safe, confidential treatment to sexual and gender minority patients within the L.G.B.T.Q.I.A.+ communities.
Dr. Mack is an Adjunct Assistant Professor of Psychology at New York City College of Technology, and an Assistant Professor of Psychiatry & Behavioral Sciences at New York Medical College. He is an ad hoc reviewer for Psychology, Public Policy, & Law, and a past editorial board member of “Behavioral Sciences of Terrorism and Political Aggression,” the official journal of the Society for Terrorism Research.
Dr. Mack is a member of several professional organizations including: the American Psychological Association; the American Academy of Forensic Sciences; the Police Psychological Services Section of the International Association of Chiefs of Police; the Detectives Endowment Association; and the National Black Police Association. He is also member, and former board member of the New York Association of Black Psychologists.
Dr. Detective Mack
PO Mack with Chief of Department Scott during African American Day Parade in 1996.
PO Mack getting his horse "Byrnes" ready for a fun day on patrol, Troop D, Pelham Bay Park, Bronx, NY. Community Policing: Neighborhood kids living in the local Bronx housing developments were occasionally treated to horse rides!
PO Mack posing after a parade on 5th Avenue in Manhattan in front of the Mosque.
Conductor Mack with his brothers Walter and Roger. After getting promoted to Train Operator, Dr. Mack along with his two brothers followed in their NYC Transit Police Sergeant father's footsteps and became NYPD detectives.
PO Mack in 1988 as a rookie cop on foot patrol in midtown Manhattan.
Dr. Mack's father retired at the rank of Sergeant from the NYC Transit Police Department after serving for 32 years. Here Korean War Veteran and Bronze Star recipient PO Walter Mack Shield #1638 is posing fresh out of the academy circa August 1960.