Bococa Dental Team

About our Practice

We provide dental care for adults and children of all ages and offer a full range of dental services, including preventive care, general teeth cleanings, cosmetic dentistry, Invisalign, and implants. Having specialists and all of the technology in-house, all of your treatment can be completed under one roof, with the highest level of quality possible.

We’re driven by the idea that each and every patient should be treated in a caring, friendly manner and walk out of our office feeling like they received unparalleled service and the highest level of care.

Meet the Doctors

Click on each team member to learn more about them...

Dr. Gregory Gangi

Dr. Gangi has been practicing dentistry for 15 years. Living in the neighborhood, he founded Bococa Dental to provide quality dental services for our Brooklyn community and families. He is a graduate of New York University where he received both his Bachelor’s degree (cum-laude) and his Doctorate of Dental Surgery. At the New York University College of Dentistry, he was inducted into the OKU National Dental Honor Society for graduating at the top of his class.

He completed a General Practice Residency at the Naval Medical Center in Portsmouth, Virginia, has completed additional postgraduate education in Dental Implants at New York University and is an Invisalign expert.

Dentistry is an ever changing discipline and Dr. Gangi attends continuing education courses all throughout the year in order to provide you with the best and most highly advanced care. He has been living in the neighborhood for over 10 years and is lucky enough to walk to the practice each day. A husband and father of one son, he spends most of his free time with his family, taking photos, eating and living a healthy lifestyle, listening to his old records, and learning the martial arts of Muay Thai and Brazilian Jiu-jitsu.

Dr. Helen Rozenfeld

Dr. Rozenfeld is Bococa Dental’s Periodontist and Implant Surgeon. Dr. Rozenfeld is an alumnus of the SUNY Stony Brook School of Dental Medicine where she graduated with High Honors and was inducted into OKU, the prestigious National Dental Honor Society. She then went on to receive her three-year specialty training in Periodontics at SUNY Stony Brook. She is a Diplomate of the American Board of Periodontology and has received advanced training in all aspects of non-surgical and surgical periodontics including implantology, minimally invasive periodontal plastic surgery, guided tissue & guided bone regeneration, sinus augmentation, and laser dentistry.

Dr. Joshua Chubak

Dr. Chubak is Bococa Dental’s Endodontist (root canal specialist). Dr. Chubak received his DDS degree from New York University College of Dentistry. Afterwards, he completed a one year residency at the Long Island College Hospital and then went on to complete his Advanced Specialty Training in Endodontics at NYU. Because endodontists limit their practice solely to root canal treatment, endodontists are efficient and precise. This equates to positive experiences and faster healing. Dr Chubak utilizes an operating microscope, digital imaging, 3D imaging, ultrasonic instrumentation, and fiber optics in order to treat patients quickly and comfortably.

Meet the Hygienists

Jen R.D.H.

Jen is a Registered Dental Hygienist with an Associates degree in Science and Bachelor’s degree in Research from NYU. She has over 20 years experience in dental practices. Talking about dental needs and answering questions is a joy and pleasure for her. When you meet her you will find an honest optimistic spirit with a friendly approach that will attempt to help you find and accomplish your dental health goals. She was raised near Seattle Washington but is now is a proud Brooklyn local community member. When not at Bococa Dental, you can find her spending time with her children and their beloved dog, marathon training, bike riding, cooking, reading and socializing in the neighborhood.

Rosette R.D.H.

Rosette has been a Dental Hygienist for almost 15 years. She is committed to providing the best possible care for all of her patients and creating a happy and healthy smile is her ultimate goal. She is a dedicated, talented and compassionate hygienist who strives to maintain the highest levels of accreditation and pursues ongoing education in order to stay abreast of the latest trends in dentistry. She is a native New Yorker and mother of three children. She loves to travel with her family, and enjoys painting, riding her bike and shopping.

Kelly R.D.H.

Kelly earned her Associates in Dental Hygiene from Tyler Junior College and her Bachelor’s degree in Biology from Louisiana Tech University. After moving from Louisiana to New York City, Kelly joined Bococa Dental as a Dental Hygienist. Her favorite part of being a hygienist is meeting and interacting with people from all over the world. Kelly loves art, cooking, Harry Potter, and playing tourist in the big city with her husband and daughter.

Meet the Team


Scheduling Coordinator

Tai is usually the first person to greet you when you come to the office. She takes pride in making you feel happy and comfortable at each visit. Tai was born in Ohio and raised right here in the neighborhood. She is a dog-lover and stops to greet and pet every dog she sees on the street.


Financial Coordinator

Margaret has been working in dentistry for 8 years. She enjoys helping patients receive quality care from start to finish. Born and raised in the suburbs of Philly, she moved to NYC where she went on to receive her Bachelor’s degree in French and her Masters in Literary Translation from French to English at NYU. In her spare time she likes to watch movies, try out great restaurants, and spend time with her family and friends.


Practice Manager

Stephanie is our Practice Manager. She has been in the dental field for over 15 years and has been managing dental offices since 2008. She enjoys finding ways to help all of our patients feel comfortable and at ease. She is happy to answer any questions, plan for appointments, help resolve concerns and make your entire experience at Bococa a positive one. She is also a mother of two young daughters and lives nearby in Brooklyn.


Head Assistant

Emily is the Head Dental Assistant at Bococa Dental. She has been at the practice since the doors opened in 2011. Her goal is to help make you feel comfortable throughout your dental procedures. She is an expert at Invisalign protocols, 3-D impressions, 3-D and 2-D X-rays, CAD/CAM, and chairside assisting for all general dentistry procedures, periodontal and implant surgeries, and endodontic (root canal) procedures. Emily grew up in Brooklyn and outside of work she loves to spend time with her friends and family. If it's not just a day of relaxation at home watching a basketball game, she’s out shopping and finding out what's new in the fashion world, catching a movie, or enjoying a game of pool.