375 South End Avenue
New York, NY 10280
Call Now! 212-619-4070

Our Team

Meet the Doctors

Dr. Simon Roytberg Dr. Roxanna Khajavi Dr. John Nosti – Advanced Cosmetic & Rehabilitative Dentistry
Dr. Vitaliy Fabrikant Dr. Michael Chau – Periodontist Dr. Firas Marsheh – Endodontist
Dr. Jovanka Zivkovic Dr. Ryan Trulby Dr. Mahdiyeh Shahpasandzadeh
Dr. Bill W.S. Kim Ulvie Shkolyar – Dental Hygienist
Christina – Dental Hygienist

Simon Roytberg, DDS

General Dentist

Dr. Simon Dr. Roytberg is a graduate of University of Washington dental school, one of the best in the country. He has been a dentist for years and has been through several post graduate courses in different fields of dentistry since receiving his D.D.S. degree.

His emphasis on patient comfort as well as keeping up-to-date with the latest advancements in dentistry enable him to provide his patients with the best quality of care in the field. Dr. Roytberg has a wide range of experience in different areas of dentistry, from cosmetic and restorative dentistry to surgical treatments and root canal treatments.

His approach to your treatment starts with patiently listening to you. Then, after a complete and thorough examination, he reviews and discusses the diagnosis and treatment options with you.

“I am proud to provide my patients with the best in dental technology, treatment options, and patient comfort. It is my pleasure to address all your questions and concerns.”

Dr. Simon Roytberg

Back to Top

Vitaliy Fabrikant, DMD

General Dentist

Dr. Fabrikant graduated from Temple University School of Dentistry in 1997 and went on to complete an additional year of general practice residency at prestigious Eastman Dental Center, Rochester, NY.Dr. Fabrikant has a conservative approach to dentistry, trying to save and restore natural dentition and reserving to extractions and subsequent implants only whenever is absolutely necessary. Dr. Fabrikant had an additional training in adult orthodontic “Invisalign” and widely incorporates this knowledge into treatment plans.Dr. Fabrikant has been in private practice since 1999. He has completed hundreds of hours of continuing education seminars and courses. Pursuing a strong interest in endodontics, implantology, and cosmetic dentistry.Dr. Fabrikant has experience in routine restorative services, crown and bridge as well as Root Canal treatments. He can perform endodontic therapy on multi-rooted teeth utilizing rotary Ni-Ti files which significantly reduces amount of time for Root canal therapy procedures.

Back to Top

Jovanka Zivkovic, DDS

General Dentist

After receiving her degree from school for dental technicians in Belgrade with high honors Dr. Zivkovic attended School of Dental Medicine Pancevo, Serbia. As a top of the class graduate Dr. Zivkovic furthered her dental expertise and honed skills in a postgraduate residency program at the National Health Center in Serbia. Dr. Zivkovic received her MBA at Union University and continued her education in general dentistry in the Netherlands. Dr. Zivkovic completed her advanced program at Columbia University in New York and received training in Implantology, Endodontics, Oral Surgery, IV Sedation and Prosthodontics. For several years Dr. Zivkovic worked alongside top dentists in New York City.

Dr. Zivkovic is very committed to delivering the most up-to-date treatment to all her patients and is always on the forefront of continuing education, new treatment modalities and technology. She has trained with some of the nation’s most forward-thinking dentists in smile design and functional occlusion as well as cosmetics orthodontics ( Invisalign ). She understands that each person has a unique personality and specific dental needs and treats each patient as such. For this reason Dr. Zivkovic makes her top priority to comfort her patients and put them at ease before beginning even the simplest procedure.

Back to Top

Bill W. S. Kim, DMD, MSc, DADBA

General Dentistry and Anesthesia

Dr. Kim received his dental degree from McGill University in Montreal, Canada where he received the Oral B Laboratories Dental Undergraduate Scholarship for outstanding academic achievement. He then pursued a General Practice Residency training at the New York Presbyterian Hospital, Weill Cornell Medical College where he gained additional skills in dental emergency management, wisdom teeth extractions, and dental implants. Dr. Kim has completed multiple advanced continuing education courses in dental implants, oral surgery, root canal treatment and dental anesthesiology. In addition to his Bachelor’s degree in Biochemistry (McGill), Dr. Kim holds a Master’s Degree in Pharmacology (University of Toronto). He investigated the role of genetics and metabolism in smoking behavior and received multiple awards and fellowships, as well as published his research. After several years in general practice, Dr. Kim pursued post-graduate education in dental anesthesiology at Wyckoff Heights Medical Center in Brooklyn, NY, after which he became board-certified in this field and is a Diplomate of American Dental Board of Anesthesiology. In addition to general dentistry, Dr. Kim is able to provide general anesthesia and IV sedation for individuals with a variety of medical conditions (dental phobia, special needs, gag reflex, etc) for dental procedures. He has multiple publications in the field of dental anesthesiology and pharmacology as well as presented at numerous conferences.

Dr. Kim is a member of the American Dental Association, New York State Dental Association, and is a Diplomate of American Dental Board of Anesthesiology. Dr. Kim is also affiliated with Royal College of Dental Surgeons of Ontario and Ontario Dental Association. He holds a permit for general anesthesia for dentistry in New York State and Ontario, Canada.

In his spare time, Dr. Kim enjoys tennis, traveling and spending time with his family. He is also a seasoned piano performer. He speaks English, Korean and French.

Back to Top

Michael Chau, DMD

Board Certified Periodontist

Dr. Chau was born and raised in New Jersey and received his Doctorate degree from UMDNJ – New Jersey Dental School. After completing two hospital residencies and working in private practice for several years, he continued his training in the specialty of Periodontics at New York University, where he received the Clinician of the Year Award. Dr. Chau is recognized as a Board-Certified Periodontist by the American Board of Periodontology and is licensed to practice in New York and New Jersey.

Having been immersed in the educational setting for several years, Dr. Chau holds much respect for his past mentors and educators. He enjoys teaching and currently is a hospital attending and lecturer for dental residents at Lincoln Medical Center in the Bronx. He lives with his wife and baby daughter in Manhattan. He enjoys snowboarding, modern art, and is always on the lookout for new restaurants and cuisines to try out.

Dr. Chaus Professional Training and Memberships

  • University of Medicine and Dentistry of New Jersey, DMD
  • New York Presbyterian Weill Cornell Hospital – General Practice Residency PGY1
  • New York Hospital Queens – General Practice Residency PGY2
  • New York University College of Dentistry – Degree in Post Graduate Periodontics
  • Diplomate, American Board of Periodontology
  • Lincoln Medical Center – Clinical Attending
  • American Academy of Periodontology
  • Northeastern Society of Periodontists

Back to Top

Dr. Ryan Trulby, DDS, MS


Dr. Ryan Trulby was born in Manhattan, raised just across the George Washington Bridge in Bergen County, New Jersey, and lives in Upper West Side. After graduating from Rutgers University, Dr. Trulby received his dental degree at Columbia University College of Dental Medicine, where he graduated number one in his class. During his time at Columbia, Dr. Trulby received several awards including the Alpha Omega Highest Academic Achievement Award, the Abraham and Martha Barnett Scholarship, and the Dean’s Scholar Award and Scholarship.

Following his graduation from dental school, Dr. Trulby completed a 3 year postgraduate orthodontics residency at Columbia University as well, becoming highly experienced in providing child, adolescent, and adult orthodontic treatment with braces and Invisalign. He is also highly motivated to continue improving his clinical acumen and has taken multiple continuing education courses including the Aligner Intensive Fellowship, a rigorous 17 week course covering advanced child, adolescent, and adult Invisalign treatment.

ABO_Seal_Blue AAO-logoPNG abo_logo

Back to Top

Firas Marsheh, DDS


marsheh Dr. Marsheh earned his first Dental Degree from overseas, and practiced in underserved areas for 2 years focusing on Endodontic treatment before he moved to the United States. He received his Doctorate of Dental Surgery from New York University College of Dentistry, and earned his specialty degree in Endodontics in 2009 from Lutheran Medical Center in Brooklyn, NY.

Dr. Marsheh practiced General Dentistry for 1 year before entering the Endodontic Program to experience complete patient care. He has provided endodontic therapy to many patients. While completing his specialty training, Dr. Marsheh conducted research at New York University focusing on “Anxiety toward Endodontic Treatment”.

Dr. Marsheh’s philosophy for his practice is:
“To reduce the anxiety and stress that accompany an Endodontic Treatment experience, to provide each individual patient with care, comfort and knowledge prior to treatment. To treat and give each patient the optimal results in a short amount of time.”

Back to Top

Dr. Roxanna Khajavi, DMD

Board Certified Pediatric Dentist

Dr. Khajavi Dr. Roxanna Khajavi (known as Dr. Roxy by her patients) grew up in Southern California. She attended UCLA for her undergraduate degree and studied biology. A couple years later, she moved to Boston to attend Tufts University School of Dental Medicine. Following dental school, she went on to complete both her General Practice and Pediatrics residencies at Maimonides Medical Center, where she served as Chief Resident in her last year.

Dr. Roxy is devoted to staying up to date on the latest information and technology in pediatric dentistry. She believes communication is one of the most important aspects of her practice and will take the time to explain all treatment options in depth with each family. She loves working with her young patients and is looking forward to bringing happy and healthy smiles to the community. In her spare time she loves to bake, do yoga, and garden.

Back to Top


Advanced Cosmetic & Rehabilitative Dentistry

Visit website for more information

nosti Dr. Nosti graduated from the University of Medicine and Dentistry-New Jersey Dental School. He went on to complete a General Practice Residency at Lehigh Valley Hospital in Allentown, PA, a subsidiary of the University of Penn. Medical School.

Dr. Nosti has gone on to complete an extensive post-graduate education in Cosmetic Dentistry, Reconstruction Dentistry, Temporomandibular Joint Dysfunction (TMJ) and Occlusion (bite relationships). He started teaching as a Clinical Instructor with
The Hornbrook Group, and is now the Clinical Director of Education for The Clinical Mastery Series where he teaches dentists all over the world on how to diagnose and perform complex reconstructive and cosmetic dentistry.

Dr. Nosti has authored and is featured in numerous instructional DVD series for dentists. His expertise has allowed him to become an adjunct faculty member at the esteemed Arizona School of Dentistry and Oral Health. He serves on the editorial boards of numerous dental publications, and has been published in many journals including the prestigious Journal of the American Academy of Cosmetic Dentistry. He is also a key opinion leader for Ivoclar Dental Products.

Dr. Nosti was selected as a “Top Dentist in New Jersey” by his peers and in the New Jersey Monthly magazine in 2011, 2012, 2013, and 2014. In addition, examples of Dr. Nosti’s cosmetic dentistry are used by the American Dental Association in the association’s pamphlets, booklets, and websites for use by dentists all over the world, to show patients what is possible with veneers and crowns (cosmetic dentistry). Dr. Nosti is among the few dentists in Manhattan who hold Fellowships in the Academy of Comprehensive Esthetics (Cosmetic Dentistry), the Academy of General Dentistry (FAGD), and the International Congress of Oral Implantologists (FICOI).

Back to Top

Mahdiyeh Shahpasandzadeh, DDS

General Dentist

Dr. Mahdiyeh Shahpasandzadeh “Dr. Maddie” was graduated from Kerman university of Medical Sciences in 2008. Dr. Maddie was consistently a top dental student and was ranked first place by the dental faculty for outstanding dedication to academics, patient care, and research. She was also awarded a first-place prize for the research presentation at the annual congress of dental students.Dr. Maddie completed her advanced program at Columbia University in New York and received training in Aesthetics, Implantology, Endodontics, Prosthodontics and being laser and invisalign Certified. She then pursued a General Practice Residency training at the New York Presbyterian Hospital, where she worked on patients with very complex medical histories, developmental disabilities, and geriatric medical complications. She Provided care during rounds and on-calls with same responsibilities as that of a first-year Oral and Maxillofacial Surgery resident at NYP.

Dr. Maddie is Enthusiastic, career-oriented and talented dental professional with knowledge of dental care processes and procedures, proven ability to ensure that first rate care is provided to patients and families. Her smile makeovers are the forefront of Cosmetic dentistry, and she is committed to improving her patients’ smiles by utilizing the highest standards of modern Esthetic Dentistry.

She enjoys cooking, playing piano, travelling, and most importantly being with her husband Soorena and her family and friends. She speaks English, Farsi.

Back to Top

Ulvie Shkolyar

Dental Hygienist

Ulvie had a passion for dentistry since childhood. She was terrified of the dentist as a child. After numerous dental procedures as a child and young adult, Ulvie decided it would be great to help others prevent problems.

She has been with our office since 2012, working as a patient coordinator. Ulvie graduated from Kingsborough Community College in 2014 with A.A.S in Liberal Arts, and then in 2017, graduated from New York City College of Technology with A.A.S in Dental Hygiene. She is a member of American Dental Hygienists Association and Dental Hygienists Association of the State of New York.

Ulvie truly loves her work in dentistry and cares about every patient she treats. She is passionate about patient education and feels especially accomplished when she can make patients with previous negative experiences feel comfortable and happy.


• New York City College of Technology – Associate in Dental Hygiene, 2015-2017
• Kingsborough Community College — Associate in Liberal Arts, 2010- 2014
• New York State Certified in Local Anesthesia and Nitrous Oxide Analgesia – May 2017
• Member of American Dental Hygienists Association and Dental Hygienists Association of the State of New York.

Back to Top


Dental Hygienist

We would like to welcome our new hygienist Christina to the practice! Christina is a graduate from MCPHS University where she obtained her Bachelor’s Degree in Dental Hygiene. She is currently working on her Master’s Degree and teaching dental hygiene part time at New York City College of Technology! Christina will be working Thursdays, Fridays, and Saturdays – Schedule your appointment with her today !!

Back to Top

Back to About Us


New York Dentist - Battery Park Dental Group
Dr. Simon Roytberg and Dr. Vitaliy Fabrikant
375 South End Avenue
New York, NY 10280
(212) 619-4070