Hygienists & Assistants


Maureen Brown – 21 years
Maureen has been a hygienist with Dr. Siman for 21 years.  She resides in Redford.  In her free time, she is an avid Red Wings fan.

Kim Cavalier-Efros – 19 years
Kim Cavalier-Efros has worked as a dental hygienist for Dr. Siman for 18 years with special responsibility for patient education. Kim earned an Associate Degree in Applied Science and Dental Hygiene from Oakland Community College in 1994 and is certified in cardio-pulmonary resuscitation. She lives in Farmington Hills and enjoys playing the guitar, knitting, and gardening.

Sonya Dare
– 8 years
Sonya Dare received an Associate Degree in Dental Hygiene from Kalamazoo Valley Community College. She has an anesthesia certificate, and training in digital radiography and intraoral photography. Sonya has worked in dentistry for 28 years. In addition to dental hygiene, she is responsible for hygiene inventory control. Sonya and her family live in Westland. She enjoys cooking and family gatherings.


Mignon Nicol – 15 years
Mignon Nicol, a Certified and Registered Dental Assistant, has worked in dentistry for 41 years, including 14 years at Dr. Siman’s office. She completed her professional education at the University of Michigan and the Univerisity of Detroit. Mignon is Dr. Siman’s chief chair-side assistant and coordinates interoffice reconstructive dental cases. She also coordinates breath care and administers the in-office Zoom and Opalescence teeth bleaching program. Mignon lives in Plymouth and enjoys traveling.

Heather Nathan – 14 years
Heather Nathan has worked in dentistry for 18 years, 13 of them at Dr. Siman’s practice. She is Dr. Diesing’s and Dr. Gordon’s primary dental assistant and also handles account payable, inventory control, purchasing, computer trouble shooting, and training junior assistants. Heather is certified in radiography and CPR. She lives in White Lake and enjoys reading, bowling, and animals.