Office Location

99 Park Avenue
New York, NY 10016
T 212.286.8585
F 212.490.8966 
ny@hpmb.com

Areas of Practice

Medical Liability Defense

Medical Malpractice

Education

Fordham Law School: JD: 1995
New York University: BA: 1991

Bar Admissions

Massachusetts
New York
United States District Court, Eastern District of New York
United States District Court, Southern District of New York

Badges

Michael Sullivan

Partner

msullivan@hpmb.com

Michael Sullivan is a Senior Trial Partner at Heidell, Pittoni, Murphy & Bach, LLP with more than 25 years of experience litigating and trying cases to verdict throughout New York State.  Mr. Sullivan joined HPMB in 2000, became a Partner in the firm in 2004 and has been a member of the firm’s Executive Committee since 2014.

Mr. Sullivan represents several of the premier medical centers and health systems in the United States, and he specializes in defending those institutions and individual physicians in complex, high exposure cases in all medical specialties including cardiology, orthopedic surgery, podiatry, general surgery, neurosurgery, obstetrics, gynecology and neurology.  His practice includes the general defense of medical malpractice cases in state and federal court, state hospital investigations, physician disciplinary proceedings and general risk management for medical professionals.  In addition, Mr. Sullivan regularly lectures on risk management and quality assurance issues, litigation prevention measures and trial strategy.

Prior to joining HPMB, Mr. Sullivan practiced for five years as a Senior Trial Attorney in the Brooklyn District Attorney’s Office where he tried more than twenty misdemeanor and felony cases to verdict, including robberies, attempted murders and homicides.

Selected for Best Lawyers 2024

Verdicts & Cases

HPM&B is proud to be listed in the 2025 Edition of the Best Lawyers in America!

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Best Lawyers

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Defense Verdict in Nassau County

HPM&B Partner Michael Sullivan and associate Natalie Hermon obtained a unanimous defense verdict in a Supreme Court, Nassau County medical malpractice case on June 20, 2024 after a two week trial. Plaintiff was 52 years old when he underwent...

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Summary Judgment Dismissal

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HPM&B’s Fourth Defense Verdict in One Week Came from Nassau County

HPM&B Partner Michael Sullivan and associate Natalie Hermon obtained a unanimous defense verdict in a Supreme Court, Nassau County medical malpractice case on September 20, 2023 after a one week trial. Plaintiff...

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HPM&B Defense Verdict Streak

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2024 Best Laywers & 2024 Best Laywers: Ones to Watch

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2024 Best Lawyers

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HPM&B Begins the Year with a Unanimous Defense Verdict in Nassau County

HPM&B Partners Michael Sullivan and Matthew Messina obtained a unanimous defense verdict in a Supreme Court, Nassau County medical malpractice case on February 21, 2023 after a two week trial.   The plaintiff was 35 years old and...

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Defense Verdict for HPM&B in New York County

Michael Sullivan obtained a unanimous defense verdict in a Supreme Court, New York County medical malpractice case on March 6, 2020 after a one week trial.The plaintiff was a 60-year-old physician who underwent surgery on June 4, 2014 to...

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Another Defense Verdict for HPM&B in Queens County

Michael Sullivan obtained another unanimous defense verdict in a Supreme Court, Queens County medical malpractice case on December 6, 2019 after a two week trial. The plaintiff was...

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Michael Sullivan and Adam Kaufman Receive A Defense Verdict in Queens County

HPM&B partners Michael Sullivan and Adam Kaufman obtained a unanimous defense verdict in a Supreme Court, Queens County medical malpractice case on November 1, 2019 after a two week trial. ...

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Michael Sullivan Receives Another Defense Verdict in Kings County

Michael Sullivan obtained a defense verdict in a Supreme Court, Kings County podiatric malpractice case on October 22, 2018. Plaintiff underwent multiple surgeries by the defendant...

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Michael Sullivan Receives a Defense Verdict in Suffolk County

Michael Sullivan obtained a defense verdict in a Supreme Court, Suffolk County medical malpractice case on September 26, 2018. Plaintiff was a 48-year-old attorney who was struck by a...

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Michael Sullivan Secures a Directed Verdict in Orange County Supreme Court

Michael Sullivan obtained a directed verdict in a Supreme Court, Orange County podiatric malpractice case on August 17, 2018. Plaintiff underwent podiatric surgery to repair an arthritic first metatarsophalangal joint and four contracted,...

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Defense Verdict in New York County

Michael Sullivan obtained a defense verdict in a Supreme Court, New York County physical therapy malpractice case on July 7, 2017. Plaintiff was 57-years-old and receiving...

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Defense Verdict in Richmond County

Michael Sullivan obtained a defense verdict in a Supreme Court, Richmond County medical malpractice case on October 20, 2017. Plaintiff’s decedent was 71 years old when he was admitted to the defendant hospital for colon cancer...

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Directed Verdict in Kings County

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Defense Verdict in Nassau County

Michael Sullivan obtained a defense verdict in a Supreme Court, Nassau County podiatric malpractice case on October 7, 2015.Plaintiff was 45 years old and had a 15 year history of multiple sclerosis when she underwent a Lapidus...

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Defense Verdict in New York County

Michael Sullivan obtained a defense verdict in a Supreme Court, New York County dental malpractice case on August 21, 2015.Plaintiff was 40 years old when she had seven amalgam fillings changed to composite fillings and had an eighth tooth...

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Defense Verdict in Queens County

Michael Sullivan obtained a defense verdict in a Supreme Court, Queens County podiatric malpractice case on June 16, 2015. Plaintiff was 55-years-old when she underwent bunion and hammertoe surgery on her right foot by the defendant in...

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Defense Verdict in Kings County

Michael Sullivan obtained a directed verdict in a Supreme Court, Kings County dental malpractice case on March 3, 2015.  The 49-year-old plaintiff underwent a tooth extraction by the defendant and claimed that the extraction was...

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Defense Verdict in New York County

Michael Sullivan obtained a defense verdict for a family practice physician in New York County in a case involving allegations that the physician improperly treated plaintiff's knee...

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Defense Verdict In Queens County

Michael Sullivan received a defense verdict on August 16, 2011 before the Honorable Duane A. Hart in Queens County Supreme Court in a medical malpractice action.Plaintiff alleged that the defendants negligently failed...

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Defense Verdict In New York County

HPM&B obtained a defense verdict on October 7, 2013 on behalf of an orthopedic spine surgeon in Supreme Court, New York County. Plaintiff was 53 years old when he underwent four level fusion with instrumentation...

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