Though his developments and expertise in aesthetic plastic surgery are many, he is especially renowned for his advancements and artistry in facial, eyelid, and breast surgeries. As well Dr. Loeb was recognized for pioneering facial transplanting. In 1986 he received a national award for his outstanding research, successfully conducting transplants on a live baboon and on human cadavers, paving the way for the success of facial transplantation today. He has written and spoken extensively on cosmetic plastic surgery topics and conducted medical presentations on facelifts, brows, eyelids, breasts, abdominal surgery, liposuction, rhinoplasty and laser resurfacing.

Among multiple affiliations, Dr. Loeb is:
* a lead investigator in national silicone implant studies for the Mentor Corporation
* a lead investigator in national silicone implant studies for INAMED Aesthetics (formerly known as McGhan Medical)
* an investigator in Silicone lip implantation, Restylane and Radiesse fillers

Dr. Loeb has been recognized, in multiple years, as a premier cosmetic surgeon by Castle Connelly, in its annual, "How to Find the Best Doctors in New York" publication, and in New York Magazine's, "The Best Doctors List".