Meet Our Dentists

Dr. Joseph Greenbaum

Dr. Greenbaum graduated from the University of Michigan School of Dentistry in 1989. He has advanced training in the field of implant dentistry and cosmetic dentistry. He has successfully worked with hundreds of denture and partial denture patients to improve their chewing and comfort.

Dr. Kristin Timpner

Dr. Kristin Timpner

Dr. Kristin Timpner grew up in Southeast Michigan and graduated from Albion College in December 2000 with a Bachelor of Science degree in chemistry. She then continued on to the University of Michigan where she received her DDS degree in 2005. After that she spent 2006 completing an advanced education in general dentistry residency at UofM. She joined the practice as an associate in 2006 and became a partner of the practice in 2009. Dr. Timpner is married to Jason, and they have two daughters, Emerson and Brynn. She enjoys spending her time away from the practice at home with her family and maintains an avid interest in sports and outdoor activities. A member of the Michigan and American Dental Associations.

Dr. Phil Watkins

Dr. Watkins is originally from Bloomington, IN but is now happy to call Canton, MI home. He received his bachelor of science from the University of Michigan and his degree of dental surgery from Indiana University. Dr. Watkins enjoys offering all aspects of dentistry including implant placement and cosmetic cases. Dr. Watkins belongs to a family of dentists. His wife, Maggie, practices in Saline, MI. His father and brother practice in Indiana. In his free time, Dr. Watkins enjoys spending time with his young children, Cole and Leah, playing basketball, golfing, and watching sports.

Dr. Yaman Al-Hadidi

Dr. Al-Hadidi is a graduate of the University of Michigan School of Dentistry where she won three awards for outstanding skills and leadership. She has completed a general practice residency at Ohio State University. She brings a wide range of knowledge and training to the practice of dentistry.

Dr. Tereze Steinhoff

Dr. Steinhoff joined our practice in 2001. She is originally from Livonia and attended the University of Michigan School of Dentistry, graduating in 1990. She completed a residency program at Michael Reese Hospital in Chicago. This rigorous program included advanced training in all aspects of dentistry as well as further training with residents from the medical school.She returned to Michigan with her family in1999. Dr. Steinhoff is a dedicated mother and wife and when not in the office is involved in the activities of her son and daughter.

Dr. Anna Holden

Dr. Holden is a two-time graduate of University of Michigan, obtaining her Bachelor’s of Science and her Doctorate of Dental Surgery. Dr. Holden received multiple awards relating to her research involvement and specialized patient care. Dr. Holden prides herself in providing excellent, holistic patient care.

Dr. Holden’s interests outside of dentistry include spending time with her husband, traveling, cooking, and playing sports.

Dr. Brady Schneider

Dr. Brady Schneider grew up in Milford, Michigan. He graduated from the University of Michigan with a Bachelor of Science in Psychology and completed a Master’s of Science at Wayne State University. He earned a Doctor of Dental Surgery from Indiana University where he was elected to the Omicron Kappa Upsilon Honor Society. He continued his education with a General Practice Residency at St. Joseph Mercy Oakland Hospital and was awarded Resident of the Year. Dr. Schneider takes the time to understand a patient’s concerns and desires to provide treatment that will meet their oral health needs. He offers a wide range of treatments from implants and root canals to cosmetic restorations. In his free time Dr. Schneider and his wife, Miranda, enjoy traveling to Northern Michigan, hiking, playing volleyball and basketball.

Dr. Alec Maddalena

As a recent graduate from the University of Michigan School of Dentistry, I look forward to serving patients of the Greenbaum, Timpner, Watkins, & Hadidi Dental Practice in Canton.

Born and raised in Farmington Hills, Michigan, I participated in youth sports and band activities throughout school. I attended Michigan State University in the Lyman Briggs College and was also a member of the Honors College. While at MSU, I was a member of the Michigan State Drumline, an exciting experience that included several trips to bowl games, including a national championship game in Dallas.

As a dental student at the University of Michigan, I worked diligently to advance my skills and become a passionate provider, which was enhanced through a number of externships across the state of Michigan. This year I will be completing a general practice residency through the John D. Dingell VA Hospital in Detroit, where I look forward to developing my skills with dental implants, while also working part-time in the Canton office.

Outside of school I enjoy spending time with my family & dog, golfing, boating, traveling, and playing the piano. I am eager to begin my dental career alongside all of you.

Dr. Tatiana Botero (Root Canals)

Dr. Botero received her dental degree (DDS, 1987) from CES University in Medellin, Colombia, Specialty training in Endodontics (MS, 1995) at Pontificia Universidad Javeriana in Bogotá, Colombia and the advanced Specialty Certificate in Endodontics from University of Michigan in 2005. She was Clinical Assistant Professor at CES University and had her private practice in Colombia (1989-2000). Dr. Botero joined the University of Michigan in 2001 and presently she is full time Clinical Professor and teaches Endodontics to graduate and undergraduate students. She is the director of the dental postgraduate fellowship program in endodontics. In 2012 Dr. Botero became a Diplomate of the American Board of Endodontics and she joined the Regenerative Endodontic committee from the American Association of Endodontics since 2013 and chair 2014-2020. She is Past-president of the Pulp Biology and Regeneration group of the American Association and International Association of Dental Research. Dr. Botero has authored and co-authored numerous scientific peer reviewed articles and book chapters. She serves as reviewer for several endodontic and dental journals. Her research of interest and publications are on caries-induced angiogenesis and Regenerative Endodontics.

Dr. Botero and her husband, Felipe, have lived in Michigan since 2001 and have 2 boys Samuel (20y) and Emilio (17y). She enjoys outdoor activities, biking, running, gardening, cooking, painting and travel around the world.

Dr. Andrea Tory (Root Canals)

Dr. Tory completed her undergraduate and doctor of dental surgery degrees at the University of Detroit Mercy in 2006/2012 respectively. She has spent four years in active duty Army. She served in Germany for 3 years and 1 year at Ft. Knox (2012-2016). Dr. Tory completed her Endodontics residency/MS at University of Louisville 2016-2018 and has been in private practice since 2018. Dr. Tory is married to Mike and has 2 little boys (Noah 3 yrs and Nathan 7 months). She is a Diplomate of the American Board of Endodontics (Board Certified), Member of AAE, ADA, and MDA, Furthermore, she is the current president of the Detroit District Dental Society Western Branch and also a leader of local Spear Study Club. In her very little free time, she enjoys napping :)

Her philosophy/mission is to change the perception of root canal treatment one patient at a time. She thoroughly enjoys showing patients that treatment really can be quick and painless and there's nothing to be scared of. She also tries to treat every patient as if they were her mother, father or child and give them the honesty, compassion and courtesy they deserve when putting their trust in a professional.

Dr. Ahmad Yosif (Oral Surgeon)

Dr. Yosif graduated from dental school in California and did his oral surgery training at Broward General Medical Center in Fort Lauderdale, FL. Dr. Yosif has been practicing since 2014 and is looking forward to serving our patients.

Contact Us

Our Location

Hours of Operation

Drs. Greenbaum, MacFarland, Timpner, and Watkins


7:00 AM - 8:00 PM


7:00 AM - 8:00 PM


8:00 AM - 5:00 PM


7:00 AM - 8:00 PM


9:00 AM - 3:00 PM


8:00 AM - 1:00 PM