Meet The Doctors

Dr. Robert S. Chorney, D.D.S

Dr. Robert S. Chorney graduated magna cum laude from CUNY at Brooklyn College in 1983 with a B.A. in Chemistry.  He completed his dental training at the School of Dental Medicine at the University at Buffalo, SUNY and received his Doctor of Dental Surgery in May, 1987. Dr. Chorney then went on to complete a one year general practice residency at Interfaith Medical Center in Brooklyn, New York. 
To date, Dr. Chorney has completed over 1,500 hours of continuing education credits.

Dr. Chorney is a member of the American Dental Association, the American Academy of Implant Dentistry, the New York State Dental Association, the Ninth District Dental Society and is also an active member of the Tri-State Dental and Mid-Hudson Dental Study Clubs.

In addition to Mountain bike riding and sharing his spare time with his family, Dr. Chorney also enjoys recording music and getting out and jamming with his fellow rockers


Dr. Julie Tolve Walder, D.M.D.

Dr. Julie T. Walder earned her B.S. in Biology from Union College in 1997. She completed her dental training from The University of Connecticut School of Dental Medicine and received her DMD degree in 2002. She then completed an Advanced Education in General Dentistry in Connecticut where she served as a faculty preceptor for dental students.

After her residency, Dr. Walder returned to her native Rockland County where she has been practicing for 17 years. Her commitment to patient care and making patients feel comfortable is of utmost importance to her. She attends numerous lectures and training sessions on all aspects of general dentistry, including implant restoration and is dedicated to following current trends in dentistry.

She is a member of the American Dental Association, the New York State Dental Association and The Ninth District Dental Society. She has been designated as a Top Dentist in Hudson Valley every year since 2008. When she is not practicing dentistry, she loves to hike, kayak and travel with her family.

Dr. Sarah Chen, D.M.D, M.B.S

Dr. Sarah Chen was born and raised in Northern New Jersey. She earned her
Bachelor of Arts at Rutgers University in Biology and Psychology and her
Masters at Rutgers Graduate School of Biomedical Sciences. Dr. Chen moved to
Florida to pursue her Doctor of Dental Medicine degree at Lake Erie College
of Osteopathic Medicine and returned home for an Advanced Education in
General Dentistry residency at Columbia University-New York Presbyterian

Dr. Chen attends continuing education courses to stay up to date with the
latest techniques and procedures. She is committed to providing the most
advanced dental care in a comfortable and pleasant atmosphere.

Professional memberships include American Dental Association, New York
Dental Association, and American Academy of Implant Dentistry.

Dr. Chen spends her free time staying active outdoors and enjoys fishing,
kayaking, and traveling.


Dr. Bibeka Koirala, D.M.D

Dr Koirala was born & raised in Nepal where she attended Tribhuvan University to get BDS degree before moving to the USA with her husband. With the desire to pursue her career in Dentistry, she graduated with high honors from Boston University Henry M Goldman School of Dental Medicine & earned her DMD degree . Dr Koirala then returned to New York & completed her one year General Practice Residency at Montefiore Medical center, Bronx, NY.

Dr Koirala has been delivering care to the patient since residency by working in public health & private practice settings. She strives to provide the best oral healthcare to all compassionately. She continues to grow professionally by taking various continuing education courses.

She is a member of Academy of General Dentistry & Academy of Implant Dentistry.

When not practicing dentistry, she loves spending time with her family, cooking & traveling.



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