About Your Dentist

Jeffrey Nullman, DDS

"A genuine smile comes from the heart, but a healthy smile needs good dental care."― Wayne Chirisa

Dr. Jeffrey H. Nullman loves dentistry, his patients, and staff. He combines a conservative approach to treatment with a genuine passion for helping his patients experience optimal oral health. Dr. Nullman has been practicing dentistry for over thirty years, and his enthusiasm remains evident in every aspect of the world-class service he provides. 

Dr. Nullman is dedicated to delivering individualized care the meets your specific needs, and you can depend on him to take the time to listen to your concerns and fully explain any necessary procedures. He and his warm, caring staff welcome your visit and look forward to ensuring you enjoy a positive experience in a relaxed atmosphere.


Dr. Nullman earned his Doctorate of Dental Surgery from the University at Buffalo School of Dental Medicine in Buffalo, NY. He continued his education with a General Practice Residency at Mount Sinai Hospital in New York, NY, and went on to teach clinical dentistry at the Nova School of Dentistry for many years.

Dr. Nullman and our dental team welcome you to join us and experience exceptional, comprehensive care for the whole family!

Julie Feinberg, DMD

“Making one person smile can change the world. Maybe not the whole world, but their world.”

Dr. Julie Nullman Feinberg is committed to providing quality comprehensive dental care to her patients.  She is gentle, caring and compassionate, and believes in conservative, preventative dentistry.  Dr. Feinberg understands the importance of fully explaining treatment options to her patients while minimizing discomfort and anxiety.  Her goal is to keep her patients smiling for a lifetime! 


Dr. Feinberg attended Tulane University in New Orleans, Louisiana, and graduated with a Bachelor of Science in Biology before returning home to South Florida to earn her Doctorate in Dental Medicine from the Nova Southeastern University College of Dental Medicine.

Dr. Feinberg continued her education with a General Dentistry Residency in the Miami VA Healthcare System while gaining valuable experience working at her father’s practice. She is committed to continuing education and advanced training in order to provide her patients with the most innovative techniques, technology, and treatment in oral health care.

Dr. Feinberg is a member of the American Dental Association, the Florida Dental Association and the South Florida District Dental Association. 

Johana Cobo, DDS

"Dentists make the world a better place, one smile at a time"

My Mission

"My goal every day is to improve each patient's appearance, self-confidence, and understanding of the importance of complete oral health.  I strive for excellence in all aspects of treatment and believe that a patient-centered approach yields the greatest results.  My patients are always my top priority."


Doctor of Dental Surgery
Howard University College of Dentistry - Washington, DC

Bachelor of Science in Biology
Florida International University - Miami, FL

Biology Associate in Arts 
Miami Dade Honors College – Miami, FL

Continuing Education & Professional Memberships

Dr. Cobo earned her Advanced Education in General Dentistry (AEGD) at NYU Lutheran Langone Health System in Bradenton, FL. She is a member of the American Dental Association and the Florida Dental Association.

Life & Hobbies

Raised in Cuba, Dr. Cobo moved to Miami, Florida at the age of 17 where she finished high school at G. Holmes Braddock Senior High. In her free time, she enjoys hiking and cycling.