Walter Kostrzewki, D.M.D

“Dr. K” – The Smile Designer

Featured in New York Magazine (2003) as one of New York’s Best Cosmetic Dentists

About Dr. K

Dr. Walter Kostrzewski, affectionately known as “Dr. K” by patients and colleagues alike, is a distinguished leader in cosmetic and comprehensive dentistry. With over three decades of experience, Dr. K has built his reputation on exceptional clinical skills, compassionate patient care, and an unwavering commitment to dental excellence.

Dr. Walter Kostrzewski, The Smile Designer, providing trusted dental care in Bethel, Connecticut since 1967

Education & Training

Dental Education

Doctor of Dental Medicine (D.M.D.) – Tufts University School of Dental Medicine, 1992
General Practice Residency – University Hospital, Stony Brook, NY, 1993
Bachelor of Science in Biology – Villanova University

Advanced Training

PAC-Live Continuum Graduate (2000-2001) – The nation’s premier hands-on live patient continuing education program
Hundreds of hours of continuing education in advanced dental techniques
Fellowship, International Academy of Dental Facial Esthetics (IADFE) – A select group committed to excellence in facial esthetics
Fellowship, Academy of Comprehensive Esthetics (ACE) – Recognizing commitment to advanced learning and clinical excellence

Professional Recognition

New York Magazine (2003) – Listed as one of New York area’s best cosmetic dentists
Sustaining Member – American Academy of Cosmetic Dentistry (2002-2007)
Member – American Dental Association (ADA)
Member – DOCS (Dental Organization for Conscious Sedation)

The Educator & Thought Leader

Dr. K’s expertise extends far beyond his own practice. As a respected educator and industry leader, he has:

Clinical Instructor at the prestigious Hornbrook Group in Chicago, training fellow dentists in cosmetic dentistry and full mouth rehabilitation
National Speaker presenting to dental professionals across the country
Published Author with articles featured in leading dental journals including:

Dental Town
The Crown Council
The Dental Leader

Industry Consultant working with major dental manufacturers and laboratories

Dr. Walter Kostrzewski in a modern dental exam room at Stony Hill Dental Care, equipped with advanced technology for comfortable patient care in Bethel, Connecticut

The Team Builder – “Coach K”

Beyond dentistry, Dr. K is known as “Coach K” for his exceptional ability to build passionate, high-performing teams. In 2000, he founded The Winning Dentist, a consulting firm dedicated to helping dental practices develop:

Passionate teams
Functional work systems
Motivational leadership
Congruent marketing strategies

Published Works:

“Creating Passionate Aesthetic Dental Teams” – A comprehensive resource manual for dentists and office managers
“Leading and Developing the Ultimate TEAM” – Forthcoming publication (Spring 2018)

Personal Life

When he’s not transforming smiles or coaching teams, Dr. K is an active family man and sports enthusiast. He’s happily married to Kristen and is the proud father of three sons – Luke, Alex, and Aiden. An avid skier, golfer, and hockey player with over 40 years of experience (including college hockey in the ECAC/S at Villanova), Dr. K has remarkably never lost a tooth despite four decades on the ice! He enjoys golfing with Kristen, skiing, working out, and they’re currently learning ballroom dance together.

Dr. Walter Kostrzewski enjoying time with his family, bringing the same care and dedication to patients at Stony Hill Dental Care in Bethel, CT

Connect with Dr. K

Ready to experience the difference that expertise, compassion, and attention to detail can make? Schedule your consultation with Dr. K today and discover why patients throughout Connecticut trust him with their smiles.

Schedule An Appointment