Meet the Dental Masters Team

General Management


Mike Kulwiec, CDT
37 years experience
Owner and General Manager

Mike Kulwiec attended the University of Southern California, graduating Summa Cum Laude and Phi Beta Kappa in 1979, with a major in Business Administration and Social Science. He grew up the in the dental lab field as his father, Len, was also a technician and lab owner. Mike earned his CDT in 1982.

Mike is the founder and owner of Dental Masters Laboratory. He has published and lectured internationally on the subjects of management and dental technology. He has successfully developed two other dental businesses, both sold to NASDAQ listed companies. Mike now directs Dental Masters’ development as a premier quality, service-focused laboratory.

Mike enjoys skiing, tennis, hiking, reading & traveling. He resides in Sonoma County, home to Dental Masters Lab.

Tony Sanchez, CDT
42 years experience
Director of Technical Training & Education

Tony attended Loyola University (Biology) and Sonoma State University (Computer Science). Before college he worked in his father’s dental laboratory and after college he worked for E & M, Zella and Buttress labs. He joined Dental Masters Laboratory in 1979.

As Director of Training, Tony manages instruction to both entry-level and experienced technicians in all phases of dental technology.

Manager, Removable Prosthetics.

Tony's hobbies include photography, computers, dog training and refereeing youth soccer.

In the Lab


Gene Davis
49 years experience
Manager - Crown & Bridge/Ceramics

After graduating from the US Naval Dental Technology Program in 1967, Gene began his career at Mullen Dental Lab in Philadelphia, later becoming the ceramic department manager. In 1977 he became the manager of the ceramic department at Stern Empire in Houston, Texas and was later promoted to President/GM of OCA in Albuquerque, NM.

As a Master Ceramist, Gene has attended advanced programs at leading institutes, including Pankey, LVI, Tanaka and PacLive. Gene began his career at Dental Masters Laboratory in 1992 as Empress Department Manager. He became the Manager of Crown & Bridge/Ceramics in 2001.

Gene enjoys photography, painting, sculpting, hiking and wine tasting.

John Hazen
44 years experience
Technical Advisor - Fixed and Removable

After graduating from the US Naval Dental Technology Program in (1972-1977), John worked as the in house technician for Prosthodontist Dr. Robert Poteat in Raleigh, NC. He then worked at Pacado Dental Lab and was the owner of Deer Creek Dental Lab before joining Dental Masters Laboratory in 1987.

With formal training, specialized courses and hands-on experience in both removable and fixed restorations, John is our implant advisor and general advisor in Crown & Bridge.


John enjoys baseball, golf, fishing, gardening, carpentry and trips to our local coast, parks and rivers.

Paul Colvin, CDT
25 years experience
Lead Designer - Removable Partial Dentures

Paul joined Dental Masters Laboratory in 1991 and was trained in RPD design. He has developed a national reputation as a talented technician with superb communication skills. Paul became a CDT in 2003.

Paul enjoys fishing, gardening, woodworking and time with his family.

Marin Branch Lab


Aung Thinn, CDT
42 years experience
Manager - San Rafael Branch Lab
Manager - Complete Dentures & Valplast

Aung graduated with a BS in Zoology in 1972 from Arts and Sciences University, Rangoon, Burma. In 1974 he received a diploma in Dental Technology from the Rangoon Institute of Dental Medicine. He then worked and instructed at Mandalay General Hospital and the Institute of Dental Medicine, Yangon. Aung came to the US in 1994. He earned his CDT in 2001 and worked with JDH Lab before joining Dental Masters in 2004.

Aung enjoys playing golf, cooking, time with his family.

Accounting and Administration


Donna Natale
Director of Finance/HR Manager

Donna holds a Human Resource Management certificate from Santa Rosa Junior College where she also studied accounting and business management. Prior to joining Dental Masters Laboratory in 2000, Donna was the Accounting/Office Manager for Hlebakos Produce and Senior Buyer for Ritz Food Services.

Donna enjoys spending   time with her family, watching her kids play sports, Harley motorbike rides, swimming & boating.