Our Doctors

Dr. Melissa Della Croce DMD
Dr. Melissa Della Croce joined the practice in 2008. She received her undergraduate degree in Biology from King’s College in Wilkes-Barre, PA. She completed her dental education in 2006 at Temple University School of Dentistry, where she earned a Doctor of Medical Dentistry Degree.
Dr. Della Croce is a fourth-generation dentist, and proud to follow in the footsteps of the previous generations that graduated from Temple University School of Dentistry before her. Dr. Della Croce maintains membership in the Academy of General Dentistry, American Dental Association, Lititz Ambucs, and National Association of Professional Women. She is passionate about continuing education, and is an active member of PEAK.
She is one of a small percentage of dentists who have achieved their fellowship in the Academy of General Dentistry.

Dr. Andy Sieger DMD
Dr. Andy Sieger joined the practice in 2015. Dr. Sieger grew up in Lititz, Pennsylvania, and graduated magna cum laude from both Penn State in 2010, and Temple University’s Kornberg School of Dentistry. He was class president at Temple Dental School. He completed his General Practice Residency with the VA Northern California Healthcare System. Dr. Sieger knew he wanted to return to Lancaster County to practice dentistry and feels incredibly lucky to have found a dental home in New Holland.
Dr. Sieger appreciates the incredible staff at Sieger Family Dentistry, that cares deeply for all of our patients. He is dedicated to providing great leadership for the practice to keep the practice a top dental practice in Lancaster County. Of utmost importance to him is giving our patients a first-class experience as well as developing a close, trusting relationship with his patients. He continues to pursue some of the top continuing education courses throughout the country.
Dr. Sieger is married to his wife Anj, and they have two young children. In his spare time he enjoys golfing, traveling, cooking, and spending time with his family.

Dr. Sara Lamichane DMD
Dr. Sara Lamichane joined the practice in 2024, but she has been practicing dentistry for over 20 years. Dr. Sara is a graduate of Manheim Township High School. She received her undergraduate degree from Bucknell University where she was a member of the collegiate swim team along with the golf team. She went on to get her dental education at Temple University School of Dentistry, where she earned a Doctor of Medical Dentistry Degree. After graduating dental school, Dr. Sara honed her surgical skills at a internship in Boston, where she met her husband, Dr. Manny Lamichane.
Dr. Sara provides exemplary service and care to all of her patients. She is dedicated to continuing the fantastic legacy of both offices in New Holland and Lititz. Dr. Sara is married to her husband Dr. Manny Lamichane and they have 3 children. Dr. Sara enjoys cooking, traveling, knitting, spending time with family, and advancing her knowledge of dentistry in her free time.