Dr. John Michael Thomassen, Board Certified Plastic Surgeon

Dr. Thomassen

Dr. John Michael Thomassen is a Board Certified Plastic Surgeon serving the South Florida community for over 10 years.  He concentrates his practice on cosmetic plastic surgery of the face, breast and body and reconstructive plastic surgery of the breast.

Dr. Thomassen honed his analytic skills as a Mechanical Engineering graduate from the Georgia Institute of Technology.  From there he pursued his childhood ambition to become a physician.  He excelled in medical school at the University of Puerto Rico where he grew up, graduating Magna Cum Laude.   During medical school, he decided to complete a year of research at the National Institutes of Health in Bethesda, MD.

He continued his medical training at Georgetown University in Washington, DC and completed a 6 year integrated plastic surgery residency and fellowship.  He then went on to start his private practice in Fort Lauderdale, FL.

With over 10 years of practice in the South Florida community, Dr. Thomassen has become a trusted and respected plastic surgeon in the South Florida community.  He receives multiple referrals from doctors throughout the medical community. His expertise in complex reconstructions has led to a wealth of experience and has lead to  excellence in cosmetic treatments.

Dr. Thomassen remains active in the research arenas, working to advance the practice of plastic surgery. He also serves as a preceptor for ancillary medical care providers in training including medical students, nurse practitioner students, and even high school students in pre-med tracks.

Staying the forefront of research allows Dr. Thomassen to also provide more complex forms of reconstruction including free muscle flaps and DIEP flaps for breast reconstruction. He is dedicated to the highest patient care with procedures that are safe and individualized in order to achieve the best outcomes. His gentle nature, honesty, and highly skilled techniques have allowed him to build trusting and lasting relationships with his patients.

Curriculum Vitae


Georgetown University Hospital, Washington, DC
Plastic Surgery Integrated Residency Program 7/2000-7/2006

National Institutes of Health, Bethesda, MD
Research Fellowship 1996-1997
Institute of Deafness and Communication Disorders

University of Puerto Rico, San Juan, PR
Doctorate in Medicine 8/1995-7/2000
Magna Cum Laude

Georgia Institute of Technology, Atlanta, GA
Bachelors in Mechanical Engineering 9/1987-3/1992


Davison SP, Thomassen JM. Ear Reconstruction and Salvage. Emedicine.com. 5/5/2002

Al-Attar A, Mess, S, Thomassen JM, Kauffman CL, Davison SP. Keloid Pathogenesis and Treatment.
Plastic & Reconstructive Surgery. 117(1):286-300, January 2006.

Spear SL, Thomassen JM. Breast Reconstruction with Implants. In E Singletary, G Robb, G Hartobagyi (Eds.), Advanced Therapy of Breast Disease. 1st Ed. London: Hamilton Press, 2004

Spear SL, Thomassen JM. Secondary Breast Reconstruction. In: Spear SL (Ed.), Surgery of the Breast: Principles and Art, 2nd Ed.


State of Florida, Board of Medicine

Puerto Rico, Board of Medicien


Senior Residents Conference March 2006: Incidence of Cleft Palate Fistula with Veau-Wardill-Kilner Repair, an institutional experience


Board Certified – American Board of Plastic Surgery, 1/28/2009 – present

Honorary Mention for Academic Achievement, Medical School Class of 2000, University of Puerto Rico, 6/15/2000

Certificate of Training in Basic Microsurgical Techniques. Union Memorial Hospital. Baltimore, Maryland. 2/2004

ACLS Certificate 4/20005 – present


Active Member, American Society of Plastic Surgeons

Associate Member, American Society of Aesthetic Plastic Surgery
Active Member, Fort Lauderdale Surgical Society
Active Member, Broward County Medical Association


Broward General Medical Center
Imperial Point Medical Center

North Broward Medical Center

Coral Springs Medical Center

Holy Cross Hospital


Birth Date: July 12
Origin: Santiago, Chile
Languages: English, Spanish