Our Team

Dr. Nicholas T. Papapetros, DMD, FAGD

Dentist in Andover, MA

Dentistry by Design
Dr. Nicholas T. Papapetros, DMD, FAGDDr. Papapetros has been delivering the highest quality dental care to his community since 1992. Originally from Quincy, Massachusetts, Dr. Papapetros earned his undergraduate degree in biology from Colby College in Waterville, Maine. He then went on to Tufts University School of Dental Medicine, where he earned his dental degree and student awards from both American College of Dentists and the American Association of Endodontists. After earning his dental degree Dr. Papapetros then completed a general practice residency at Lenox Hill Hospital in New York.

Dedicated to continuing education, Dr. Papapetros completed more than one thousand credit hours in continuing education courses and seminars since beginning his private practice. He has studied at such prestigious institutions as the L.D. Pankey Institute for Advanced Dental Education, the Las Vegas Institute for Advanced Dental Studies and Dawson Center for Advanced Dental Study. Dr. Papapetros is a Fellow in the International Congress of Oral Implantologists, International College of Dentists, American College of Dentists, and the Pierre Fauchard Academy. Dr. Papapetros is past President of the Tufts University School of Dental Medicine Alumni Association and the Merrimack Valley Dental Society.

Dr. Papapetros is an active member in many other leading dental and professional organizations, including: International Congress of Oral Implantologists, American Dental Society, Academy of General Dentistry, Massachusetts Dental Society, New Hampshire Dental Society, Merrimack Valley Dental Society, Greater Lawrence Dental Society, Tufts University School of Dental Medicine Alumni Association, and L.D. Pankey Foundation. 

In his spare time Dr. Papapetros enjoys spending time with his wife, Andrea, and their four children: Theo, Isabella, Olivia, and Zachary.

Dr. Jhon O. Giraldo, DMD

Dentist in Andover, MA

Dentistry by Design

Dr. Jhon O. Giraldo, DMD Dr. Giraldo was born in Cali, Colombia and received his DDS degree from the Universidad del Valle in 1991. After completing a one year General Practice Residency, Dr. Giraldo maintained a private practice devoting time to the indigenous population and farm workers. Dr. Giraldo continued on to Tufts University School of Dental Medicine, receiving his DMD degree. While attending Tufts he was awarded the Prosthetic Award for Clinical Excellence (crowns and bridges).During almost ten years spent in the USA, Dr. Giraldo has regularly taken different courses on CAD/CAM technology, Implant restorative techniques, and Advanced CEREC Design. These make him both a highly experienced and skillful professional, always committed to his patients' oral health. He is also a member of the American Dental Association and Massachusetts Dental Society.    

Dr. Giraldo lives with his wife and three children in Massachusetts.  


Dr. Leo Kharin, DMD

Dentist in Andover, MA

Dentistry by Design

Dr. Leo Kharin DMD Dr. Kharin was born in Moscow, Russia, moving to United States in 2000. He completed his undergraduate education at the University of Massachusetts Boston in 2006, graduating Magna Cum Laude with Bachelor of Science in psychology.  He earned his D.M.D. from Tufts University School of Dental Medicine. His Advanced Education in General Dentistry residency was completed at Winslow Indian Health Care Center in Winslow, Arizona. After returning to New England, Dr. Kharin practiced in private offices in Massachusetts and Connecticut.
Dr. Kharin has a true passion for the profession of dentistry. His background in behavioral sciences aids him in deeply connecting with his patients and tailoring his treatment to their unique needs. Since graduating in 2010, he has been taking numerous continuing education courses focusing on implant placement and restoration, endodontics, oral surgery and his main passion – complex restorative procedures, including full mouth rehabilitation. He is an active member of American Dental Association and Massachusetts Dental Society.
Dr. Kharin lives in Watertown and spends his spare time swimming, playing tennis and hiking the mountains of Maine and New Hampshire. He is also a student of photography and world history. 

 Driany - Office Manager, Registered Dental Assistant

Driany joined Dentistry By Design in November of 2016, after receiving her certification for dental assisting from Lincoln Technical Institute.  Since then, she has become a true asset to our team.  As office manager, Driany keeps the duties throughout the office, running smoothly. She communicates with patients at the front desk, verifies insurance benefits, manages billing procedures and assists with scheduling. Along with her hard work as office manager, Driany is also a registered dental assistant. She works one-on-one with the dentists during dental procedures, assists our hygienists, and offers help in any way that she can. 

In her spare time when Driany is not at the office, she enjoys seeing her friends and family, and going to the gym.


 Katherine - Registered Dental Assistant

Katherine joined our team in August of 2011, as a registered dental assistant. She obtained her assisting certificate from Bryman College, where she received extensive training in dental assisting techniques and procedures. As a vital part of our team, Katherine works one-on-one with our dentists, in all aspects of dentistry, and assists our hygienists and our front office team. 

When she is not working, Katherine loves spending time with her family, camping, skiing, rollerblading and being outdoors. 



 Anissa - Registered Dental Hygienist

Anissa has been an integral part of our team at Dentistry By Design since 2002. She obtained her degree in Dental Hygiene from the University of Louisville and has advanced training in laser implememtation, Invisalign treatment, and CPR. She has taken continuing education courses through the Las Vegas Institute, as well as the Schuster Center for Team Development in Arizona. She plans to continue her education by obtaining her local anesthesia certificate, and becoming a registered community health hygienist. 

During her time away from the office, Anissa loves spending time outside with her family hiking, camping, kayaking and going to the beach.  

Jayme Jayme - Registered Dental Hygienist

Jayme graduated from Massachusetts College of Pharmacy and Health Sciences in Boston, where she obtained a bachelor of science degree in Dental Hygiene.  In July of 2014, Jayme joined our family here at Dentistry By Design. 

When she's not interacting with and treating her patients, Jayme loves spending time with her family, going to the beach and traveling; especially to Aruba!  She also likes taking barre exercise classes and playing with her niece and nephew. 


Dottie Dottie - Patient Coordinator

Dottie has been a fundamental part of our team here at Dentistry By Design, for over 20 years!  She facilitates front desk duties for incoming patients and always comes to work with a smile.  Dottie provides information to our patients regarding insurance coordination, finances, scheduling and assists in all aspects of the front office. With extensive dental experience, she coordinates paperwork for new and established patients and assists in any way that she can. 

When she's not at the front desk, Dottie likes reading in her spare time, and visiting with family and friends.