Mr Nassab is a Consultant Plastic, Reconstructive and Aesthetic Surgeon at the Countess of Chester NHS Trust. He completed his medical degree at the University of Birmingham in 2000 and subsequently trained in plastic surgery. He is a Fellow of the Royal College of Surgeons of England in Plastic Surgery (FRCS Plast) and is listed on the General Medical Council (GMC) Specialist Register for Plastic Surgery. Additionally, he holds full membership with the British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS).

Mr Nassab undertook a highly sought-after fellowship in London, working alongside some of the most renowned surgeons in the UK. In 2011, he was awarded the British Association of Aesthetic Plastic Surgeons (BAAPS) Travelling Fellowship Prize, which allowed him to visit esteemed aesthetic surgeons in the United States. Following this, he earned a Master of Science (MSc) degree in Aesthetic Surgery from the University of London.

He has been extensively published in plastic surgery journals and serves as a peer reviewer for the Aesthetic Surgery Journal. He has also contributed a book chapter on liposuction body contouring to a plastic surgery textbook. Mr Nassab is frequently invited to speak at both national and international meetings.

Mr Nassab's areas of expertise include a wide range of procedures for the face, body, breast, hair, and skin. For the face, he specialises in anti-wrinkle injections, brow lifts, face lifts (rhytidectomy), fillers, pinnaplasty, rhinoplasty, and thread lifts. His body procedures include abdominoplasty (tummy tuck), lipomodelling, and liposuction. In breast surgery, he offers breast augmentation, breast reduction, and breast uplift (mastopexy). He also performs hair transplants and various skin treatments, including mole removal, scar revision surgery, skin tag removal, and treatments for scarring and warts.

Mr Nassab has been with the Countess of Chester NHS Trust since his appointment, bringing a wealth of knowledge and expertise to his role. His commitment to advancing the field of plastic surgery and his dedication to patient care make him a highly respected figure in his specialty.