Meet the Dentist
Thomas D. Kratzenberg, DMD, MAGD
Master of the Academy of General Dentistry
Dr. Kratzenberg graduated from the University of Pittsburgh School of Dental Medicine in 1991. He completes more than fifty hours of continuing education annually. He has been practicing in the area since 1994, and in the Irwin location since 2006. Dr. Kratzenberg is a member of the Academy of General Dentistry. He became a Fellow in June of 2013. and received his Mastership Award in July of 2017. He served on the board for the Pennsylvania Academy of General Dentistry, (PAGD) and was selected as one of America’s Best Dentists.
Dr. Kratzenberg is married to Ann, and they have three children: Kate, Lauren, and Tommy. He enjoys waterskiing, snow skiing, golfing, and bowling, and is a member of St. Agnes Parish. His goals as a dentist include always providing the best possible dentistry to his patients. He treats everyone as if they are a family member.
I’m an MAGD dentist! What does that mean for you and your family?
MAGD stands for Master of the Academy of General Dentistry. Earning Mastership takes dedication to dental continuing education (CE) beyond graduation. Less than 2 percent of general dentists in the U.S. and Canada are AGD Masters. When you see a dentist with MAGD after their name, you can rest assured that they care about knowing the latest techniques and best practices in dentistry. AGD Masters practice these techniques in a classroom setting multiple times a year — not every dentist does this.
To become an AGD Master, a dentist must:
- Complete over 1,100 credit hours of CE.
- Earn 400 of those 1,100 credits in hands-on courses.
- Pass an exam equal in difficulty to board certification exams.
Meet Our Team
Carrie – Front Desk
Carrie joined the practice in June 2026 and brings more than 25 years of experience in veterinary medicine to her role at the front desk. She enjoys getting to know patients and being part of a close, family-oriented team.
Carrie is married to her husband, Mike, and has two children. She also has a cat named Luna. In her free time, Carrie enjoys spending time with family and friends, relaxing by the pool during the summer and supporting Ian at his hockey games.
Tricia – Billing & Insurance Manager
Tricia joined Allegheny Dental Group in 2017 and graduated first in her class at the Education & Technology Institute in 1999 in health information technology. She enjoys working with the staff, even though she has only been here for a short time, and feels like she has worked with everyone for years. Tricia likes to make sure patients feel welcome when they are here for an appointment or calling for the first time. She tries to ease their fears and help them with any questions they have.
Tricia loves to travel, cook, and read. She is married to her husband, John. They have five children and five grandchildren.
Karen – Hygiene Coordinator
Karen joined the practice in January 2020 and serves as the hygiene coordinator. She enjoys working with a team that feels like family and shares a common goal of helping patients. Karen supports the practice by keeping in touch with patients and helping them schedule their regular checkups.
She has two daughters, two grandchildren and one great-grandson. At home, her orange cats, Ed and Ernie, keep her busy. Karen also enjoys gardening and helping others through local and international mission work.
Donna – Registered Dental Hygienist
Donna joined the practice in March 2026 as a registered dental hygienist. She earned her associate degree in dental hygiene from Westmoreland County Community College. Outside the office, Donna enjoys crafts, do-it-yourself projects and home remodeling.
She shares her life with her loving fiancé, Shawn, and her three children. Donna is also excited to welcome her first grandchild. Her family includes three dogs—Charlotte, Agnes and Jack—who keep life lively and full of companionship.
Maddie – Registered Dental Hygienist
Maddie joined the practice in March 2026 as a registered dental hygienist. She graduated from Westmoreland County Community College in 2025 with an associate degree in dental hygiene, including training in local anesthesia. Maddie is committed to treating every patient with kindness and providing excellent care during each visit. She values the supportive, fun team environment and appreciates always having someone to turn to for advice.
Outside the office, she enjoys crafting, playing soccer, spending time with loved ones and caring for her kitten, Ellie Bean.
Tessie – Registered Dental Hygienist
Tessie joined our practice in October of 2008. She attended WCCC and graduated from their Dental Assisting program in 2000. Tessie then completed an associate degree in dental hygiene in 2002. In 2010, she became certified in dental anesthesia. She has participated in several professional organizations, including the Student American Dental Hygiene Association, of which she was president in 2001-2002. She loves that our team is like a family and that they have fun together both in and out of the office. She also enjoys the relationships that she has developed with her patients over the years.
She has two cats named Gus and Luna. She has a husband, Brian, daughter, Rachael, and two grandchildren. In her spare time, she enjoys crafting, listening to music, going to concerts, spending time with her friends and family, and go covered bridge hunting with her husband.
Lynn – Expanded Function Dental Assistant
Lynn graduated from Western School of Health and Business in 1994, and from WCCC in 2010. She has been a dental assistant for 23 years, and has been with Allegheny Dental Group for 14 years. She loves interacting with our patients and helping them feel comfortable, and has a deep passion for helping people regain their smile after they have been unable to smile for years.
Lynn has a 14-year old son. Outside of the office, she enjoys camping, quad riding, and spending time with her family.
Beata – Dental Assistant
Beata has been a dental assistant with the practice since May 2024. She values teamwork and enjoys being part of a supportive group that works together to provide a positive experience for patients. Beata contributes by staying engaged, helping wherever needed and keeping the workday running smoothly. Her family lives in Germany, and she shares her home with two cats, Luna and Simba.
Outside the office, Beata enjoys cooking, weightlifting and hiking.
Cathy – Dental Assistant
Cathy joined the practice as a dental assistant in May 2026 after attending Cornerstone Dental Assisting Academy. She enjoys the close-knit team atmosphere and appreciates how warmly everyone welcomed her. Cathy helps patients feel comfortable while assisting the doctors and supporting efficient, high-quality care.
Raised in Liberty Borough, she enjoys learning new skills, grooming dogs, and experimenting with hair and makeup. She also loves spending time with her dog, Mazzy, four cats and two rabbits.
