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Meet Our Team

Dr. Dorn

Dr. Mark Dorn

Dr. Mark Dorn was born in Brooklyn, NY and raised in Cedarhurst,NY. He graduated from the University of Cinncinati with a Bachelor’s in Science Biology and pursued a career in General Dentistry at NYU. After graduating with his Doctorate in Dental Surgery in 1977.

Dr. Mark Dorn has professionally had the opportunity to run a successful practice for 42 years. He takes an active interest in his patients, not only providing them with outstanding care, but getting to know them on a personal level. His passion is Restorative Dentistry. He continues to enhance by constantly taking continuing education to keep up with todays newest technologies in Dentistry.

Dr. Dorn has been married to his soul-mate for 45 years, they have been blessed with 3 children and 5 grandchildren. He enjoys spending time with his family and traveling in his free time.

Dr. Brownstein

Dr. William Brownstein

Dr Brownstein has been in practice for almost 30 yrs and has been located on the North Shore in Manhasset for this time. He was born on Long Islandand resides there ever since. He earned his B.A. degree from Suny Binghamton in Biochemistry in 1982. He graduated NYU School of Dentistry in 1986 where he earned his D.D.S. degree. He did his general practice residency at Long Island Jewish Medical Center and then did his specialty training at Nassau County Medical Center and earned his degree in Endodontics in 1989. He has published many articles in the field of Endodontics and was one of the first to utilize Digital Radiography in New York. He has appeared on Cablevision to discuss this topic. Dr Brownstein has one son, Harris and enjoys sports, weight training and automobiles.

Dr. Andrew J. Leder

Andrew J. Leder, DDS, is a periodontist at Gramercy Dental Center. Dr. Leder takes a great amount of pride and satisfaction in helping his New York City patients prevent disease and improve the state of their oral health. Dr. Leder has been highly trained to provide his patients with the most current, innovative surgical and non-surgical techniques that modern dentistry has to offer. Dr. Leder completed his undergraduate studies at the State University of New York at Albany and was admitted into the Alpha Kappa Delta Honor Society in 1987. He then completed dental school at the State University of New York at Stony Brook School of Dental Medicine, where he graduated with his Doctorate of Dental Surgery. While at Stony Brook, Dr. Leder won the John Oppie McCall Award, which recognizes individuals demonstrating an exemplary dedication and proficiency in periodontology. He then went on to complete his specialty training and received his Certificate in Periodontics from the University of Medicine and Dentistry of New Jersey State.

To stay current with the latest treatments and techniques in periodontology, Dr. Leder routinely participates in continuing education courses. His commitment to continuing education allows him to offer the most advanced and highest quality care with successful outcomes.

Dr. Leder maintains membership with several professional organizations, providing him with opportunities for continuing education, including the American Academy of Periodontology, American Dental Association, Northeast Society of Periodontists, Alpha Omega Dental Fraternity, and American Society of Osseointegration.

Dr. Breen

Dr. Kevin Breen

Dr. Breen has always had a passion for science, health, and people. His approach to dentistry reflects his dedication to all three. With meticulous attention to detail and quality, he takes a comprehensive approach and has a gentle touch. Dr. Breen’s aim is to help each of his patients make informed decisions about their own health and smiles. He does not just tell, he shows. In much the same way he does not just explain, he listens.

Dr. Breen grew up northwest of Chicago in rural Hebron, Illinois. He received his Bachelor of Science degree in Biology from the University of Illinois at Urbana-Champaign and graduated from the University of Illinois at Chicago’s College of Dentistry in 2004. Dr. Breen is relentless in his pursuit of knowledge and is a firm believer in continuing education. He enjoys being part of the most recent advances in dentistry and will always consider himself an ongoing student of the profession. Before he moved to New York, he enjoyed working as the official dentist for the Chicago Wolves AHL professional hockey team in addition to private practice.

Dr. Breen’s other interests include traveling, cycling, baseball, hockey and all types of skiing– whether it be on fresh snow or open water. When the weekend weather is nice, you can often find him cycling along the Hudson or through Central Park and exploring everything, the city has to offer.


Elena – Hygienist

To say this is a big year for hygienist Elena Kirsanova is an understatement. Elena is dedicated to making 2019 the best year for her patients, she recently got married in Egypt to her husband Sayed.

Elena has been working in the dental field for over 23 years. She first started as a dental assistant and an office manager, graduating from a Dental Hygiene program at NYU College of Dentistry in 1999. Her top priority is to provide gentle and painless but thorough treatment as well as oral hygiene education. Elena desires simply the best outcome for all her patients.

Originally from Moscow Russia, Elena has been living in Brooklyn, New York. She is a proud mother of one son. When not at work, Elena teaches Oriental dance, performs with her troupe and creates dance costumes.


Tiffany – RDH

Gramercy Dental Center would like to welcome our newest addition to the family, Tiffy!!!!!! Tiffany’s passion for Dentistry initially began upon her employment as a dental assistant at the age of 16. Her exposure to dentistry at such a young age motivated her to advance her position to becoming a dental hygienist.

Tiffany attended New York City College of Technology and eventually earned her licensure required to serve the public in terms of improving oral health. Tiffany prides herself in providing excellent dental care to all of her patients, she believes in treating all patients the way she would her own family.

Tiffany is 22 years old and lives in Staten Island. She enjoys cooking (vegetarian), going to the gym, hanging out with friends, doing makeup, and waitressing on her spare time.

Stacy Sookram

Stacy Sookram – Office Manager

Stacy was born in Trinidad and came to the United States when she was 4 years old. She graduated Molloy College, Rockville Center NY with a certification in Medical Billing and Coding. In August 2018, she joined Gramercy Dental Center. Her favorite part of her job is helping make it possible for patients to achieve that beautiful smile they deserve; she takes pride in supporting her team grow both professionally and personally.

She has continued her education an obtained her Health Coaching Certification at the Institute for Integrative Nutrition, NY. She is affiliated with American Association of Dental Office Managers (AADOM). In her free time, she enjoys traveling, exploring the hidden treasures of NYC, spending time with her boyfriend and their King Charles Cavalier (Cali). One of her favorite quotes is by Melissa Ambrosini, “Learn to liberate your life, strip off the fear, wash away the self-doubt and dress yourself in health, wealth and LOVE.”

Minorky De La Cruz

Minorky De La Cruz – Patient Care Specialist

Minorky was born in Dominican Republic. She came to the United States at the age of two. She grew up in the Bronx and attended Walton High School. Minorky completed her Dental Assistant Certification at Lehman College. In 2017, she joined Gramercy Dental Center. Her favorite part about working at Gramercy Dental Center is seeing her regular patients, hearing all the stories they share with her, and meeting new patients. She enjoys seeing when a patient comes in and leaves with a wonderful smile.

When she is not at work, she loves listening to music, spending time with friends and family. Fun Fact about Minorky she loves any new adventure!

Aridai Dominguez

Aridai Dominguez – Dental Assistant

Aridai also known as “Ari” was born in Mexico and raised in Brooklyn NY. She completed her GED and then obtained her Dental Assisting Certification at the New York School for Dental Assistants (NYSMDA). She is continuing her education in Hygiene School. Ari is a mama of two boys. In April 2019, she joined Gramercy Dental Center. Her favorite part of working at Gramercy Dental Center is the work family she has gained by joining our team. She loves providing the best care to her patients and making sure that they are satisfied at the end of every appointment.

When she is not working, Ari is spending time with her boys, friends and family. One of her favorite quotes is “No one is going to stop you from the goal you set for yourself except yourself.”

Izvorinka Stojanovic

Izvorinka Stojanovic – Dental Assistant

Izvorinka also known as “Vivi” was born in Serbia. She came to the United States at the age of 17 to follow her dreams. She graduated with her Dental Assistant Certification in 2003 from The New York School for Medical and Dental Assistants (NYSMDA). She has been an assistant for 20 years. Vivi enjoys assisting her doctors and making her patients feel comfortable, she ensures every patient leaves her chair loving their smile. Vivi has continued her education and graduated from the Christine Valmy School with her Esthetician Certification. Vivi’s goal is to bring spa services into dental offices.

When she is not working, Vivi enjoys the outdoors and keeping herself active, she loves Hiking in the mountains, swimming and playing tennis. She loves traveling to different countries and learning new cultures and history.




Yei – Patient Visit Specialist

Yei, yes! like (YAYYY) was born and raised in New York City, her family roots are from Liberia. She is currently a Biology major at Lehmann College with a concentration on Pre-Med and minoring in Health Science to further extend her knowledge in the Medical Field. Yei aspires to become a Pediatrician and wish to explore the world of Dentistry to further her medical and dental knowledge and experience in the field. Yei loves interacting with patients and loves delivering the best patient experience to every patient.

When she is not working, Yei likes watching movies, reading books, hiking and spending time with her family and friends. She is very excited to be a part of such a diverse team and is excited to continue the legacy and memories that have begun before her.

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Our patients reviews


Based on 22 reviews

Love it love it!
I never been a fan of the dentist until I got to this office !
The staff is super friendly !
The doctor is great
And Tania find everything possible option to make it as affordable as possible with multiple payments options !
Make your appointment as soon as you can and you would be smiling like me

Elizabeth A.

I’ve been going to Gramercy (formally personal dental) dental for over 6 years. awesome staff, nice facility and helpful payment options. always feel well cared for and confident in the service and care. highly recommend.

Akia S.

I’ve been coming here for years, the prices are very reasonable! Dr. Shin is amazing and treated me with a lot of care and comfort. You never have to wait to be seen. Making appointments are very easy to do over the phone, they’re very flexible! HIGHLY RECOMMEND!

Jeanette D.

Dr Dorn is an experienced, professional dentist who provides top notch care.
Hygienist, Elena K, is by far the BEST hygienist I have ever met. Her 22yr experience in the field speaks for itself! Simply amazing!

Marjorie J.

I love the work that Liz performance in my mouth she is very responsible as she explained what is going to happen if I don’t take care of my teeth. I Love the treatment that she gives me, thank you !

Gahudys R.

Amazing experience, walked in without an appointment with a chip in my front tooth, got scene right away! The service was amazing the ladies on the counter were very helpful and accommodating! My doctor was a lovely lady named dr. Sciortino! Very gentle and professional also very fast! Wonderful experience will be making this my go to dentist in the future!

Lorraine G.

I haven’t gone to the dentist in over 15 years and my experience at Grammercy Dental Center was amazing! I was terrified of the procedures being painful but the dental hygientist took the tame ti explain everything to me and made me feel comfortable with all dental procedures. I would recomend this dental center to all my coworkers and everyone I know!

D B.

Thank God for new management ! My Dental hegenist Elaina was the best !!! She cleaned my teeth with love. I feel like a new person. The center is clean and beautiful. The people that work here are friendly and professional. Been coming for years and I definitely recommend this Dental Center.

Nafii J.

(212) 979-6363 Book an appointment