Dr. Bruce Greenstein
Caring, well-informed, and passionate about helping patients improve both their dental and overall health, Dr. Greenstein focuses on vitally important issues related to dentistry including the effects of snoring, sleep apnea, tongue posture, acid reflux, nutrition, pH balance, migraine headaches and cervical posture on your overall health.
Dr. Greenstein grew up in a dental office working alongside his father, also a dentist, for nine years before starting his own practice.
As a graduate of the University of Pennsylvania School of Dental Medicine, Dr. Greenstein has provided general dental, orthodontic, and health-related services in Miami since 1988. From braces to Invisalign, same-day crowns to tooth-colored fillings, TMJ/bite issues to wisdom teeth removal, Dr. Greenstein can help you overcome your dental problems.
Along with his recent Fellowship in TMJ, Gneuromuscular Dentistry and Craniomandibular Disorders, Dr. Greenstein has received certificates from Occlusion Connections, Orthodontic Studies, United States Dental Institute, Las Vegas Institute and the Pankey Institute. He is a former member of the American Dental Association and the American Academy of Forensic Sciences and assisted in dental identifications alongside the Chief Forensic Odontologist at the Miami-Dade Medical Examiner’s Office.
Dr. Greenstein has been an active member in Business Network International (BNI Miami-Dade) where he was known as the “Toothsleuth” helping deliver better dentistry through education. He also stays pretty busy with four great kids: Adin, Sage, Lindsey, and Ellis – his finest achievements!
Dr. Alexandra Castillo
Dr. Alexandra Castillo joined Greenstein Dental in 2013. Born in Caracas, Venezuela, Dr. Castillo moved to Miami in 1995 and grew up in the Kendall area. With a Bachelors of Science in Psychobiology & Neuroscience from the University of Miami as well as a Doctor of Medical Dentistry from Nova Southeastern University, she brings an incredible passion and commitment to your dental health.
She has served as President of the American Student Dental Association receiving Awards for Excellence in service and leadership to the profession.
Dr. Castillo remains active in these roles as a member of multiple organizations including the Academy of General Dentistry, American Dental Association, and local dental societies. In 2011, she led a dental team on a mission trip to provide services in Jamaica.
Married to her childhood sweetheart, Dr. Castillo enjoys Crossfit, hanging with her German Shepherd, Randy, and we’ve discovered that she LOVES singing along to the office iPod! She’s also a fantastic mother to twin children, Aria and Ezra.
Dr. Humberto Espinosa
Dr. Humberto Espinosa comes from a family of dentists in Nicaragua and has worked at Greenstein Dental for more than 16 years.
He received his dental degree at the Universidad Americana in Managua, Nicaragua in 1998 and then his orthodontic degree in Guadalajara, Mexico. He completed a General Practice residency at Jackson Memorial Hospital in 2003.
Humberto is a member of multiple dental organizations including the American Dental Association, World Federation of Orthodontists, and the Mexican Academy of Orthodontists.
He has traveled extensively with Dr. Greenstein attending various continuing education seminars including topics such as Craniomandibular & Craniocervical Physiology, TMJ symposia, K7 Instrumentation, CEREC CAD/CAM technology, Invisalign and the use of mini-implants for orthodontic movement of teeth.
Humbertos enjoys spending time with his wife, Catalina, and two sons, Nicolas and Sebastian.