Meet the Dentists

John Osterman, DDS
Dental Specialist
Prosthodontist & Implantologist

Dr. Osterman, a Manhattan Dentist, has practiced prosthodontics and implantology in Manhattan New York for more than 25 years. Prosthodontists are specialists recognized by the American Dental Association who are highly trained to provide complex cosmetic and restorative dental services including smile design, smile makeovers, full mouth reconstruction, porcelain veneers, and complex dental implant restorations.

In addition to his doctorate in dental surgery, Dr. Osterman’s professional training and degrees include his specialty in prosthodontics, surgical implant dentistry, and hospital dentistry. He is a former associate professor for NYU College of Dentistry and faculty dentist at NYU Medical Center. He is an active member of the New York State Dental Association, American College of Prosthodontists, International College of Prosthodontists, and American Dental Association.

As a prosthodontist, Dr. Osterman has a complete understanding of dental procedures and dental implant techniques that can create the most natural-looking restorations for your teeth. Over the years, he has helped hundreds of patients enhance their smiles as well as replace missing teeth with implants. He is a compassionate and caring doctor in addition to being an expert in his field.


Dr. Elan Katz
Periodontist / Gum, Bone & Implant Specialist

Dr. Katz is a Board Certified Periodontist / Gum Specialist. He received a Doctor of Dental Surgery (DDS) degree from the Stony Brook University School of Dental Medicine. He then completed a three year residency in periodontics and dental implants, earning a certificate in periodontics from Stony Brook University School of Dental Medicine.

Periodontists are specialists trained specifically in the diagnosis, management and treatment of advanced gum and bone disease as well as bone graft surgery and placement of dental implants for permanent replacement of missing teeth.

Dr. Katz in an expert in a wide range of periodontal treatments, including gum surgery, gum grafting, bone grafting, crown lengthening, bone preservation, cosmetic gum lifts and dental implants.

Dr. Katz excels in his field due to his exceptional attention to detail, thoroughness, and compassionate bedside manner, along with impeccable clinical skills and manual dexterity.


Sandip Sachar, DDS – Manhattan Dentist
General & Cosmetic Dentist

Dr. Sachar, a Manhattan Dentist, has been honored to be listed as one of America’s Top Dentists by the Consumers’ Research Council of America and recognized by “Best of U.S.,” “Top Doc America,” and “Cambridge Who’s Who” for Excellence in Dentistry. You may have seen her features in the New York Daily News, the Communique, Glamour magazine, and NY Magazine. She has also been interviewed by Sky Radio to discuss the link between dental health and heart disease.

Dr. Sachar has been an inspiration to her colleagues, staff, and classmates since her dental training at Stony Brook University School of Dental Medicine. She graduated in 1997 and has always maintained a focused code of ethics during her academic years. Her philosophy is simple: “CARE for your patients and perform dentistry on them the way you would want it performed on yourself.” She carried this philosophy all through her training as Resident at New York Hospital and Chief Resident at Wyckoff Heights Medical Center.

Dr. Sachar still maintains a high level of dental excellence through extensive continuing education and training in general and cosmetic dentistry and Invisalign and her active memberships in the American Dental Association, Academy of General Dentistry, New York County Dental Society, and American Academy of Cosmetic Dentistry. She has received many awards over the years and is well known for her corporate lectures and seminars.

Although Dr. Sachar provides a full-service dental practice for everything from cleanings and simple fillings to implants and smile makeovers, she is perhaps best known for her exceptional ability to promote proper dental care and hygiene in her patients. Her gentle touch and personable nature are what make this practice feel more like a family. By having an interdisciplinary team of doctors and dental experts in the office as well as highly skilled staff, Dr. Sachar is able to provide the best and most comprehensive care to her patients.


Katherine Wong, DDS
General & Cosmetic Manhattan Dentist

Dr. Katherine Wong is a Manhattan Dentist & attended the esteemed University of California, Irvine for her bachelor’s degree in biological sciences. She then obtained her doctorate in dental surgery from New York University College of Dentistry and went on to complete her residency at St. Barnabas Hospital in Bronx, NY.

Dr. Wong is a perfectionist and a strong believer in educating her patients to not only fix problems but to also prevent future occurrences. Her compassion and gentle touch, along with her thorough and detailed approach to dentistry, are the reasons for her quick popularity and success among patients.

Dr. Wong specializes in all phases of general and cosmetic dentistry, including restoration of dental implants, tooth-colored fillings, crowns, bridges, dentures, bonding, teeth whitening, TMJ, gum therapy, root canals, and pain management. She is also Invisalign-certified and able to enhance smiles with this conservative technique of clear orthodontics. She has always given a lot of importance to continuing education to complement her clinical skill and help deliver the best possible care to every patient, every time.


Our doctors are excited to meet you and discuss your dental needs. Call our office today at (212) 752-1163 to schedule the first step toward your healthiest smile.