By: Richard L. Smith
According to information released by the New Jersey Attorney General’s Office, an Essex County surgeon has agreed to a seven-year suspension of his medical license after state officials alleged he caused severe harm to multiple patients through substandard vascular procedures.
Dr. David A. Greuner, who practiced in Roseland and West Caldwell, had his license temporarily suspended in 2022 and has not practiced in New Jersey since.
Officials claim he performed risky endovascular procedures without formal vascular surgery training, leading to permanent disfigurement, tissue damage, and severe medical complications in at least three patients.
The procedures, known as catheter embolizations, were intended to treat venous malformations—abnormal blood vessel connections—but instead resulted in critical emergencies.
One woman required removal of her rectum and part of her colon and now lives with an ostomy bag.
Two others suffered from compartment syndrome and required emergency surgery, with one facing possible leg amputation.
Investigators alleged Dr. Greuner failed to meet basic surgical standards, including conducting inadequate imaging, using temporary embolic materials, and scheduling follow-up procedures too closely.
The state called his approach grossly negligent and dangerous to public safety.
Under a consent order filed July 11, 2025, Greuner must complete ethics training, surgical education, and undergo medical evaluations before seeking reinstatement.
If allowed to practice again, he would be restricted to general surgery for at least five years. Should he pursue vascular surgery again, he would need to complete an accredited fellowship, become board-certified, and have his first 50 procedures supervised.
Dr. Greuner must also pay $101,770 in penalties and investigation costs.