Meet the Team

Clinical Director

Robert Grunstein, DMD

The founder of Smile Central Dental, Dr. Grunstein — or Dr. G as he is affectionately called by his patients — was formally trained at Temple University Kornberg School of Dentistry and graduated in 2001. Upon graduation, Dr. Grunstein began his career working in Paterson at a busy inner-city dental clinic where he recognized an acute need for greater access to affordable dental services in the community.

Dr. Grunstein spends much of his time educating the community and policymakers on the importance of dental care for all children. He has been recognized with many prestigious awards for his innovative approach to dentistry by pioneering the concept of the Cavity Fighter truck, a mobile dental operatory. Dr. Grunstein is the recipient of the Richard Tannis Youth Service Award for his work in promoting children’s dental health in New Jersey.

In addition, he has served on the Mayoral Task Force Committee to promote further wellness in Paterson. He has also been recognized by Healthy Mothers, Healthy Babies, New Jersey Horizon Healthcare, Yeshiva University, and the State of New Jersey General Assembly for his work. He has been lauded in many publications, including The New York Times, Bergen Record, and the Star-Ledger for his commitment to dental health outreach.

Dr. Grunstein works tirelessly to raise awareness of access to dental healthcare for children and the importance of preventive dental health. When he is not working on children’s dental health, Dr. Grunstein is at home, playing with his own three children and his two Labradoodles Snickers and Mack. He also enjoys camping and working on his Jeep.

Dr. G’s Favorites:

  • Superhero: Tarzan
  • Movie: “Meet the Robinsons”
  • Food: Fried chicken and fries

Jonathan Noll, DMD

Dr. Noll grew up in Clifton, New Jersey and attended Rutgers School of Dental Medicine. He loves science and it is one of the reasons he became a dentist. His favorite part of his job is working with children and making a difference in the community.

In his free time, Dr. Noll loves to read. His favorite book is Something Wicked This Way Comes

Dr. Noll's Favorites:

  • Disney Character: Scrooge McDuck
  • Superhero: Starman
  • Food: Pierogies

Dr. Anna Lam, DMD

Dr Lam originates from Upstate New York. She attended Pennsylvania state University (B.S), Rutgers (MBS) and Case western school of dental medicine.

She has been in the dental field since 2017. She started off as a dental assistant before dental school. Currently, she is a pgy-2 pediatric resident at Jacobi medical center in the Bronx, NY.

Dr Lam finds joy working with kids. When kids say things like "I love going to the dentist", it has become her favorite part of the job. She enjoys spending time with family, shopping, home decor and of course eating.

Dr. Lam's Favorites:

  • Disney Character: Mulan
  • Book: The Lovely Bones
  • Food: Too many to name Sushi, Pasta, Pizza, and the list goes on!

Ghada Mubarez, DDS

Dr. Mubarez grew up in New York City and attended NYU. She describes herself as an artist and says that she became a dentist because dentistry combines art and medicine. She loves working with children which is her favorite part of her job.

In her free time, Dr. Mubarez loves taking walks in the parks and LOVES amusement parks.

Dr. Mubarez's Favorites:

  • Disney Character: Mulan (because she's tough!)
  • Book: Fire Starter
  • Food: Junk! French fries and burgers

Hong Yin,  DDS (Ortho)

Dr. Hong Yin was born in China but grew up in Ohio. She moved to New York for college where she attended Columbia University.  She became a dentist because she always wanted to work in the healthcare field. Her favorite part of her job is solving the puzzle of each orthodontic case.

In her free time Dr. Yin loves spending time with family, eating and playing tennis, She also enjoys spending time with her dog, Sam.

Dr. Yin's Favorites:

  • Disney Character: Ratatouille
  • Book: Catcher in the Rye
  • Food: Sushi

Jonathan Sipzner, DMD

Dr. Jonathan Sipzner grew up in West Orange, New Jersey. He attended the University of Medicine and Dentistry of New Jersey. He works hard every day to make all the young patients he sees a smile when they leave the office.

At home, Dr. Sipzner enjoys singing, snowboarding, and playing with his dog Snickers.

Dr. Sipzner’s Favorites:

  • Disney Character: Olaf
  • Movie: “Pinocchio”
  • Food: Hot Dogs




Ameet Patheja, DMD

Dr. Patheja grew up in Philadelphia, Pensylvania, and attended Cornell University and Tufts University School of Dentistry. His favorite part about his job is being surrounded by his awesome patients and colleagues. He has been working in the dental field since 2016.  

In his free time, Dr. Patheja loves watching sports especially from his hometown -Philly (GO EAGLES!). He does not have any pets but hopes to get one and name him/her Pikachu.

Dr. Patheja's Favorites:

  • Superhero: Batman and Spiderman
  • Food: Pizza



Dr. Robert Grunstein (Paterson, Passaic & Union City)

Dr. Jonathan Noll (Paterson)

Dr. Ghada Mubarez (Paterson)

Dr. Jonathan Sipzner (Paterson & Passaic)


Dr. Hong Yin (Ortho)



Dr. Patheja (Passaic)







Rizwan Shafi (Paterson)

Alexandra Moreta (Paterson)

Stephanie Rocha (Paterson & Passaic)



Karen Baez (Passaic)

Benjarak Doyle  (Passaic)

Christopher Laporta (Passaic)

Marie Pena  (Paterson)

Melissa Rosario (Union City)

Sarah Shafi (Union City)

Kristina Garcia (Union City)



Office Managers

Cristal Jimenez

Esther Toledo

Inocencia Troncoso
(Union City)

Omayra Lopez
( Paterson )

Kendally Reyes
( Clinical )

Ailiceth Almonte
( Administrative )

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Hours of operation vary by location. Please click on your desired office location for specific details: