Smile Dentist, P.C.
Formerly Sobel, Marmor, Fisher LLP
Patients Love Coming to our Offices

Doctors' Profiles


Dr. Steven Fisher graduated from Case Western Reserve University School of Dental Medicine.  He received a Master's Degree in Orthodontics and a certificate in Orthodontics from the University of Detroit/Mercy Dental School.  Dr. Fisher is Invisalign® and ClearCorrect® certified. Featured in Hudson Valley Magazine top dentist  issues 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 , 2021,2022, 2023 and 2024, 2025 and 2026. Hudson Valley Parent Magazine Favorite Docs 2014-2015 and 2017 Times Herald Record Reader's Choice Winner  Best Orthodontist.

Dr. Sam Na graduated from the Columbia University College of Dental Medicine and went on the complete a General Practice Residency at New York Presbyterian Hospital. He then practiced in Manhattan until moving to our area. His calm demeanor along with his friendly personality are an asset to our practice. Featured in Hudson Valley Magazine top dentist issue 2022, 2023, 2024, 2025 and 2026.

Dr. May Lynn Siu graduated from the Columbia University College of Dentistry and completed her Pediatric Dental Residency at Yale New Haven Hospital. She is a Diplomate of the American Board of Pediatric Dentistry  is very personable and has a desire to provide patient-centered care.

Dr. Clayton Hise graduated from Fairleigh Dickinson University Dental School and completed his Oral Surgery Residency at Lincoln Hospital, an affiliate of Albert Einstein College of Medicine of Yeshiva University. Dr. Hise maintained a private Oral Surgery practice in the Hudson Valley for many years before joining our practice. 

Dr. Ryan Foree graduated from the Columbia University College of Dental Medicine and completed a residency in Pediatric Dentistry at New York Presbyterian Hospital Irving Medical Center. He is a Diplomate of the American Board of Pediatric Dentistry and as he came to New York from California and Hawaii, he has a calming, gentle personality.

Dr. Charbel Khattar graduated from the University of Pittsburgh School of Dental Medicine and completed his General Practice Residency  at  Jacobi Medical Center, a level 1 trauma center. Dr. Khattar has an outgoing, friendly personality that will be an asset to our practice.