Dentists and Staff of Jefferson Valley in Hudson Valley & Metro NY

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GelbartMichael P. Gelbart, D.D.S.

Dr. Gelbart graduated from New York University in 1975 with a B.S. degree, and went on to graduate from the New York University School of Dentistry in 1979. In 1980 he established Family Dental Centers in upstate New York, creating practice groups in Poughkeepsie, Fishkill, Brewster, Yonkers, Yorktown Heights and Manhattan.

Dr. Gelbart is a former NYU Clinical Assistant Professor, having trained NYU dental students for more than seven years. His continuing dental and medical practice education includes attendance at numerous symposiums and educational forums in implants, sinus lifts and bone augmentation at NYU and The Connecticut Implant Institute. He has also attended practice seminars in the rescue and repair of implants and implant-blades. In 2008, he attended the prestigious Vegas Institute for Cosmetic and Neuromuscular Dentistry.

Dr. Gelbart focuses on keeping up-to-date with all of the latest advancements in dentistry and medical technology, enabling him to practice at the highest level of dentistry and provide the best quality of care in the field. His expertise ranges from the most challenging cosmetic and restorative dentistry treatments to the most complicated dental surgeries performed today.

Since placing his first implant in 1991, Dr. Gelbart has been called on to place over 20,000 implants for patients in the US and abroad, with an extremely impressive record of success. His love and enthusiasm for dentistry, along with his amazing skills, have made him a model that his peers emulate and a consummate dental professional.

Professional Memberships:

  • Diplomate of the American Board of Oral Implantolgy
  • Diplomate of the International Congress of Oral Implantology
  • Diplomate of the American Academy of Craniofacial Pain
  • Fellow of the American Academy of Implant Dentistry
  • The International Association of Orthodontists
  • The American Dental Association
  • New York State Dental Society

GordonLance Gordon, D.M.D.

Dr. Gordon received his Doctor of Dental Medicine (D.M.D.) from Boston University School of Dental Medicine in Boston, MA, and performed his dental residency at Montefiore Medical Center in Bronx, NY. Dr. Gordon is a caring and compassionate dentist, who also is fluent in Spanish.

Dr. Gordon is a general dentist with clinical proficiency in molar rotary Endodontics, Crown and Bridge, Veneers, Invisalign, Surgical extractions and implant restorations. Dr. Gordon will be practicing out of the Fishkill and Jefferson Valley offices, as well as every other Saturday at the Brewster office.


Pratik Vakil, D.M.D.

Dr. Vakil is a Texas native and attended the University of Texas at Austin, receiving his undergraduate degree in Biology.  He received his Masters of Science from Boston University Medical School.  His D.M.D. is from Boston University Goldman School of Denistry.  He completed hundreds of hours of courses in post-graduate dentistry and residency at Interfaith Medical Center for the underserved population of Brooklyn, New York.

He is dedicated to the newest advancements in cosmetic dentistry and keeps up to date with the latest technologies.  He is a member of The American Dental Association, American Academy of Cosmetic Dentistry, and International congress of Oral Implantologists.  He has been in dentistry for seven years, joining Family Dental in 2012.


CherninMarina Chernin, D.D.S

Dr. Chernin graduated from the New York University College of Dentistry in 1989, and has been trained by some of the most advanced cosmetic dentistry specialists. She has been practicing for close to 20 years.
Using a gentle approach with the latest dental practice technology, she helps patients maintain healthy teeth and avoid gum disease. She understands that patients today have many concerns about the safety of their dental care, and she gives you a warm welcome and her personal ongoing commitment to your oral health.


EhrhardtFernando Ehrhardt D.M.D., M.S.

Dr. Erhardt attended the University of Miami in Florida, receiving a B.S. degree in Biology, a B.A. in Religious Studies, and a minor in Theater Arts.  He went on to attend Harvard University School of Dental Medicine and Oral Surgery, completing his degree in 2002.

He performed his residency at Bronx, VA Medical Center.  He was part of the Clinical Faculty at Columbia University School of Dental and Oral Surgery until 2006.  He is Board Eligible, American Academy of Periodontology.


Stein Larry Stein, D.D.S.

Dr. Larry Stein completed undergraduate studies at SUNY Albany and obtained his D.D.S. degree from Columbia University School of Dental and Oral Surgery. He is a seasoned practitioner and has been with Family Dental Group for over fifteen years.

He is currently a member of the Academy of Craniofacial Pain; previously been a member of the American Dental Association, and the 9th District Dental Society. He completed the dental residency at Fishkill Beth Israel Medical Center in 1996.


Fred-Friedman-DDSFred Friedman, D.D.S.

Fred Friedman, DDS received his dental degree from Emory University Dental School in Atlanta, GA and received his certificate in orthodontics from New York University, New York, NY. Previous to joining the Family Dental Group practice, Dr. Friedman has maintained his own successful private practice. Dr. Friedman is a member of the American Association of Orthodontists, the American Dental Association, the Ninth District Dental Association of New York, and the Northeastern Society of Orthodontists.

Dr. Friedman specializes in orthodontic treatment for growing children and adults, including but not limited to traditional metal braces, clear (ceramic braces), and Invisalign for teens and adults.


Cleopatra Sioris, D.D.S.

Dr. Sioris, a pediatric dentist, received her B.A. degree from H. Lehman College and went on to complete her D.D.S. at New York University.  Her pediatric dental certificate is from Albert Einstein/Kennedy Horizon Center, Bronx, New York.  She has been in practice for 35 years, the last seven, with Family Dental Group.  Dr. Sioris regularly participates in dental outreach in nursery schools.  She is fluent in French, Greek, and has a working knowledge of Spanish.

Cassandra Blasi, R.D.H., Registered Dental Hygienist


Maggi Maria Maggi, Office Manager

Maria has a wealth of experience in dental practice management, having shifted careers from the banking industry over fourteen years ago. She took a dental assisting course and consequently joined Saw Mill Family Dental, holding many roles including working as a dental assistant and at the front desk. She has been Office Manager at Jefferson Valley since September 2012. She oversees the many aspects of the daily operations of the office and works closely with patients to sequence their treatment according to clinical needs and then according to financial impact.


MullinexCarla Mullenix, Insurance Specialist, New York Region

Carla spent two years at Wisconsin State University, before moving to New York, where she attended Mercy College in White Plains. She joined Family Dental in their Brewster office in 1986, holding various roles and eventually becoming Office Manager. In 2011, she moved into her current role, where she is responsible for acting as a bridge between insurance companies and patients. Her strong customer service skills and in depth knowledge of all insurance benefits related to the dentistry arena makes her a perfect fit for her position. She is also responsible for credentialing of professionals in the region, which is the process of establishing the qualifications of licensed professionals.