About Us

Dr. Orzechowski and Shannon Arndt Group Photo

Dr. Ray OrzechowskiRay Orzechowski, Jr, DMD

Dr. Orzechowski graduated with a B.S. from the University of Scranton in 1985, and then received his D.M.D. degree from the University of Pennsylvania in 1989. He has been practicing dentistry in Concord, NH since March of 1990. He is a member of the American Dental Association, and has served as past president of the Concord Dental Society. He currently serves on several committees of the New Hampshire Dental Society, and is the chairman of the non-profit Concord Dental Sealant Coalition. He enjoys spending time with his wife and three children, whom he has helped coach through various youth sports during their upbringing.  He enjoys mountain biking, skiing, and cooking.

Shannon ArndtShannon Arndt, DMD

Dr.  Arndt graduated from the University of Kentucky College of Dentistry in 1999 and completed a residency in General Dentistry in 2000. She served in the US Navy as an officer and dentist for 6 years and worked at a group pediatric dental office in Corpus Christi, TX before relocating to Concord in 2007. While practicing in New Hampshire, she has worked in private practice in a pediatric dental office, group general dentist office, and most recently, in public health at Concord Hospital Family Health Center Dental Clinic. She has been a long-standing member of the American Dental Association,  Academy of General Dentistry  and the local component-Concord Dental Society. She is a course instructor at New Hampshire Technical Institute Dental Hygiene School and is active in the community by serving as a board member for a local non-profit organization, Womenade, assisting women and families in the area. She enjoys running, hiking, camping, bike rides, and many outdoor activities with her husband, Dan, and their two children, Rowan and Gracen.

Heidi SHeidi S.

Office Manager

Heidi graduated from the NHTI Dental Assisting Program in 1982. She has worked with Dr. Orzechowski since 1990 when he first began his practice. She has always lived in NH, and enjoys spending time with her two adult children and friends. She also enjoys hiking, bicycling and being with her dog Skeeter.


Debbie HDebbie H.

Front Desk Coordinator

Debbie moved to NH from the Chicago area in 2004. She has worked in the dental field since then. She enjoys politics and traveling with her husband. She also enjoys  volunteering in her church and gardening. She has two adult children and a granddaughter, Bevie!


Jennifer CarrierJennifer C.

Front Desk Coordinator

Jennifer joined our team in July of 2017 and brings her 16 years of dental experience in general dentistry and oral surgery customer service. Jen is a native of the Lakes Region of NH and is a proud parent of a son, Ethan who is currently attending college. Jen loves to explore our great state (mostly back roads!) and usually with the company of her two dogs ( a black pug and a white yorkie-poo).


Stacey MStacey M.

Dental Assistant

Stacey graduated from The University of New Hampshire in 1992 with a Bachelor’s degree in Sociology. She has worked with Dr. Orzechowski since 1999. She enjoys boating, traveling and spending time with family and friends.

Angela TAngela T.

Dental Assistant

Angela has worked with Dr. Orzechowski since 2004. She received her CDA from The New Hampshire Technical Institute. She enjoys being active and spending time with her family and friends.

Sherry CarbeeSherry C.

Dental Assistant

Sherry joined our team in October 2017. She brings with her 20 years in the dental field. She attended NHTI and Manchester School of Technology. In addition to her dental assisting experience, she has been a personal care assistant for the disabled for the past 6 years.She enjoys spending time with her 3 children and grandchildren, family and friends. Her hobbies include reading, gardening and being outside.


Jenn BJenn B.

Dental Hygienist

Jenn graduated NHTI in 1994 with degrees in Dental Assisting and Dental Hygiene. She has enjoyed working with Dr Orzechowski since 2007.She has recently moved back to her family’s dairy farm with her two children with whom she keeps very active skiing, snowmobiling, hiking and exploring along with following them in their many sports and activities.

Tammy DTammy D.

Dental Hygienist

Tammy started working with Dr. Orzechowski in 2009. She graduated from NH Technical Institute in 2002 with her dental hygiene degree.  Tammy is also certified in administering local anesthesia. She enjoys spending time with her family, friends and her two dogs. Her interests include exercising, gardening and cooking.


Patti JPatti J.

Dental Hygienist/Infection Control Coordinator

Patti joined our practice in April 2014. She graduated from Erie Community College in Buffalo NY in 1985 with her Dental Hygiene degree.  Additional training has included her certifications in administering local anesthesia and nitrous oxide. She is a member of the N.H. Dental Hygiene Association. Outside of the office, Patti enjoys spending time with her family and being outdoors running, hiking and biking.


Leigh-Ann FrenchLeigh-Ann F.

Dental Hygienist

Leigh-Ann joined our practice in 2015. She graduated from New Hampshire Technical Institute with a degree in Dental Hygiene in 2003. She is certified to administer local anesthesia and laser therapy. Leigh-Ann enjoys spending time with her husband Matt and four children. She also enjoys skiing, reading and outdoor activities.

Tammy BTammy B.

Dental Hygienist

Tammy joined our practice in June of 2017. She graduated from NHTI with degrees in Dental Hygiene  and Dental Assisting in 1996. She is also certified in Local Anesthesia Administration. Tammy enjoys the gym, warmer weather and attending her son’s sporting events.



Vanessa DVanessa D.

Flex personnel between Front Office and Dental Assisting

Vanessa joined the practice in March of 2018. She has over 10 years experience in the dental field, both as an office manager and in dental assisting. She attended NHTI for Dental Assisting and Granite State College for Business. She is trained in the E$D technology. She enjoys hiking, camping, knitting and spending time with her family and friends.



Dental Assistant

Danielle graduated from the New Hampshire Technical Institute’s Dental Assisting Program in 2012.  Since then, she has attended several continuing education courses, including becoming certified to monitor Nitrous Oxide.  Danielle joined our team in January of 2019.  She enjoys spending time outdoors with her husband Arrin, and their dog Duke.


Dental Hygienist

Mercedes is a NH native that grew up in Sanbornton. She graduated from NHTI in 2011 with her Associate Degree in Dental hygiene. She started with Dr. Orzechowski and Dr. Arndt in September 2018. She has a loving husband and a handsome 3 year old son. She enjoys spending her free time with friends and family.