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Meet Our Providers

Javier Alonso, MD

Medical Director


Dr. Javier Alonso’s journey to becoming a board-certified dermatologist began in his native country of Spain. He began his medical studies at the Salamanca University of Medicine (Spain) and earned his medical degree from Navarra University School of Medicine. After a decade of practicing in Spain, Dr. Alonso moved to the United States to enroll in advanced training specializing in immunodermatology at the prestigious Mayo Clinic in Rochester, MN.

This extensive training along with over 25 years of practicing gives Dr. Alonso a rare ability to treat some of the most complex dermatological cases and an international recognition as a leader in medical dermatology. Dr. Alonso is a key opinion leader in the field of dermatology and is actively involved in research where he has conducted over 150 clinical trials as the principle investigator.

Dr. Alonso and his family relocated to Miami in 2006 to join the faculty at the University of Miami – Miller School of Medicine as an associate professor of clinical dermatology. A teacher by nature, Dr. Alonso also began teaching residents at the Miami Veteran’s Medical Center that he continues today.  In 2008, Dr. Alonso was awarded “Best Teacher Award” by the Miller School of Medicine graduating third year residents, this same compassion he carries to his patient bedside manner.

In addition to his academic experience, Dr. Alonso has been in private practice where he specializes in medical and cosmetic dermatology, and advanced surgical procedures including MOHs – a precision technique to remove cancerous cells while preserving surrounding tissue.

Physician Assistant in Miami, FL


Professional and Honorary Organizations:

  • O’Leary Society
  • American Academy of Dermatology
  • Miami Dermatology Society – member 2006- present

Provider Highlights

  • Board Certified Dermatologist
  • Assant Chief of Dermatology at VAMC (Miami)
  • Presigious Fellowship at Mayo Clinic
  • Areas of Interest: Medical, Surgical (including MOHs), and Cosmetic Dermatology


Melissa Troha brings to Optimal Health and Skin a rich background in cosmetic and medical dermatology. She is a board-certified physician assistant with a passion in helping her patient’s regain confidence in how they look and feel. Born and raised in Miami, FL, Melissa attended Florida State University where she graduated Magna Cum Laude with a bachelor’s degree in exercise science. Melissa completed her graduate studies at Nova Southeastern University where she earned her master’s degree in medical science.

Melissa is certified by the National Commission on Certification of Physician Assistants (NCCPA) and is licensed by the Florida Board of Medicine. She is a member of the American Academy of Physician Assistants, as well as the Society of Dermatology Physician Assistants and Florida Society of Dermatology Physician Assistants. Melissa regularly attends national conferences to stay current on her medical education as well the latest advancements in dermatology and aesthetics. She is fluent in both English and Spanish.

Melissa is passionate about providing quality medical care with an emphasis on patient education to help her patients look and feel their best.


Physician Assistant in Miami, FL


  • Florida State University – BS (Magna Cum Laude)
  • Nova Southeastern University – MS
  • Board-certified Physician Assistant
  • Florida Board of Medicine Licensed Physician Assistant
  • Member: Florida Academy of Physician Assistants and American Academy of Physician Assistants
  • Specialties: Medical and Cosmetic Dermatology

Renee Dunn

Renee Dunn is a licensed Esthetician, Oncology Certified Esthetician and a Certified Medical Electrologist. Renee started her career in skin care in 2000. She has always had the desire to help others and found that Esthetics helped her clients feel good about themselves. Prior to devoting herself to skin care full time she owned a Curves workout facility which also fulfilled her desire to help others. Renee believes we all have a purpose and hers is to help others feel good about themselves. As Renee says, “Beauty comes from within but gleams through your skin.”

Renee specializes in corrective skincare. She incorporates many modalities in order for her clients to receive results. Whether it’s a chemical peel, microdermabrasion, LED light therapy, Dermafrac, etc. her objective is for your skin to work while you are in her care.

Renee believes that education is key in this everchanging world of esthetics. She has attended many continue education courses over the years with Rhonda Allison, Advanced Chemical Skin Peeling Course, Skin Classic, Dermafrac, TAMA Microcurrent. PCA Skin Biology and Chemical Peels, The International Dermal Institute, Galvanic and High Frequency just to name a few.

Licensed Esthetician in Miami, FL

Community involvement is also important to Renee she has been a member of Soroptimist International of Homestead since 2004, Brightseasons Foundation since 2018, and recently joined the Chamber of Commerce in Key Largo and Homestead. She is a previous member of Toastmasters in Homestead achieving her CC and CL. She is also a member of the Associated Skin Care Professionals.

In Renee’s spare time she likes to travel, fish and spend time with family and friends.