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E Gordon Haesloop

Personal injury Attorney at Mineola, NY

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About E

Learn E’s areas of practice.

E. Gordon Haesloop exemplifies an impressive 35+ year career as a litigator and prosecutor in Medical Malpractice, as well as Civil Litigation and Commercial Litigation with a proven track record of stellar representation…always fighting for positive outcomes on behalf of his clients. His experience encompasses the areas of medical malpractice, negligence, criminal, general liability, wrongful death, personal injury, property damage and high-rise construction, as well as employment discrimination, wrongful termination, international disputes, and First Amendment issues.  Gordon has a reputation for providing an honest assessment of the merit of each and every case, be it for plaintiff or defendant.

Gordon Heasloop: 

•       Has brought 60+ cases to verdict in his career

•       Represented major hospitals on Long Island

•       Saved clients millions of dollars both before and after trial

•       Has obtained remunerative settlements for hundreds of clients  

•       Is AV-rated for the highest level of professional excellence by Martindale-Hubble, the well-respected attorney peer-review organization

Throughout Haesloop’s vast and diverse legal experience and having represented both sides of litigation, he has achieved a depth of understanding of the legal process. He has represented clients regarding the areas of Neurology, Cardiology, Psychiatry, Orthopedics, Obstetrics, Nephrology and Pediatrics. His experiences have taken him to the OR, ER, Medical-Surgical Unit, Neonatal Unit, ICU and more.

Heasloop’s cases include, but are not limited to:

•       Birth defects

•       Wrongful medication 

•       A misdiagnosis of liver disease resulting in an unnecessary appendectomy

•       A misdiagnosed brain aneurism

•       Spinal surgery resulting in permanent nerve damage

•       A defective product resulting in the amputation of a limb

•       Failure to diagnose

•       Hip replacement surgical error

•       Traumatic Brain Injury

•       Cardiac events 

•       A paralyzed employee resulting from an on-the-job injury

Haesloop graduated from St. John’s University School of Law. He began his exentensive litigation experience at the District Attorney’s Office where he tried 17 homicide cases to verdict. He then fine-tuned his investigative skills by becoming Mayor Koch’s Deputy Commissioner of Investigations. As his career progressed, he partnered with Bower and Gardner, PC focusing on Civil Litigation. He then joined Bartlett, McDonough and Monaghan, and continued focusing on Civil Litigation as partner.  He now leads the Firm of Raiser & Kenniff, PC as Chief of their Civil Litigation Department.

Licensed for 50 years
State NY
Status Due to Register within 30 Days of Birthday
Acquired 1972
Updated 11/17/2022

We have not found any instances of professional misconduct for this lawyer.

Contact E

Raiser & Kenniff, PC
Suite 351 - 300 Old Country Road
Mineola, NY, 11501
E Gordon Haesloop
87 Walker Street
2nd Floor
New York, NY, 10013
E Gordon Haesloop
80 Orville Drive, Suite 100
Bohemia, NY, 11716
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Contact for Details


AVVO RATING 9.5 (Superb)

Work Experience

  • Chief of Civil Litigation
  • Raiser & Kenniff, PC
  • 2013 - Present
  • Partner
  • Bartlett, McDonough, Bastone & Monaghan, LLP
  • 1993 - 2013
  • Partner
  • Bower & Gardner
  • 1989 - 1993
  • Associate
  • Bower & Gardner
  • 1985 - 1989
  • Assistant District Attorney
  • Kings County D.A.
  • 1971 - 1979
View all work experience


  • St John's University School of Law
  • JD - Juris Doctor
  • 1971
  • Fairfield University
  • BA - Bachelor of Arts
  • 1968


  • National Association of Computer Security
  • N/A
  • National District Attorneys Association
  • N/A
  • New York State District Attorneys Association Law Enforcement Assistance Program
  • N/A
  • Association of the Bar of the City of New York
  • N/A
  • Brooklyn Bar Association
  • N/A
  • Nassau County Bar Association
  • N/A
View all associations

Languages Spoken

  • English

Honors and Awards

  • AV Preeminent Rated
  • Martindale-Hubbell
  • 2016
  • AV Preeminent 5.0 out of 5 Peer Review Rated
  • Martindale-Hubbell
  • 2016

Speaking Engagements

  • New York organizations (state)
  • Forum Non Conveniens
  • N/A
  • New York organizations (state)
  • Admissibility of Evidence from Foreign Jurisdictions
  • N/A

Attorney endorsements

Received (5)
Given (0)
Endorse E
Medical malpractice Attorney | Apr 16
Relationship: Worked for lawyer
"I endorse this lawyer."
Litigation Attorney | Apr 14
Relationship: Worked together on matter
"Gordon is one of the "Deans" of the Southern NY And Long Island trial bar. I have worked with him and he is a marvelin the courtroom and an excellent resource to younger lawyers. I STRONGLY endorse this lawyer."
Personal injury Attorney | Apr 14
Relationship: Worked together on matter
"Gordon is a very good lawyer and I would recommend him to anyone seeking representation."
Litigation Attorney | Apr 14
Relationship: Worked together on matter
"Gordon is one of the most dedicated and knowledgeable attorneys that I know and have had the pleasure to work with. His vast experience is matched only by his exceptional common sense when it comes to dealing with client issues. He always has a unique perspective on problems. When Gordon applies his acumen to these complex issues, the analysis is more complete, his colleagues are educated, and the clients benefit."
Medical malpractice Attorney | Mar 25
Relationship: Co-worker
"Gordon is one of the most knowledgeable attorneys I know. His breadth of experience in civil litigation is impressive. I often consult with Gordon on a myriad of litigation issues and he is always supportive and helpful. Specifically referring to Medical Malpractice Gordon has shown himself to be one of the most experienced and well versed in his field. I am very happy and proud to have Gordon as the chief of civil litigation at Raiser & Kenniff."
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Mineola Personal injury Lawyer E Gordon Haesloop
E Gordon Haesloop
Personal injury Attorney
Mineola, NY
Licensed for 50 years