• Our Partners

    Dr. Isabelle Lass


    Washington, DC

    Dr. Isabelle Lass was born and raised in Washington, D.C. as a first generation American. She received her undergraduate degree in Business Management from Ithaca College and worked in retail management for several years.

    She then joined her father's dental laboratory for eight years before pursuing a dental degree. She graduated from the University of Maryland, Baltimore College of Dental Surgery. She was awarded a prosthodontic clerkship position which offered her the opportunity to treat more complex restorative cases. Her academic excellence was recognized by the Gamma Pi Delta and Omicron Pi honor societies. She was also a member of Psi Omega fraternity during dental school. She joined Cohen & Cohen after graduation and she has been a patient here for her entire life. Dr. Morris saw her potential as a child and predicted that she would work here.

    Dr. Lass loves the opportunity to talk with and care for her patients while helping them maintain their oral health. Her attention to detail, patience and kind nature are what keep her patients happy. She loves dentistry since it combines her skills while allowing her to help people smile.

    Since graduating, she has kept up to date with the latest advances in dentistry by completing up to 50 hours of continuing education per year. Dr. Lass is a member of the DC Dental Society, American Dental Association, Maimonides Dental Society, and served as the president of Dental Science Study Club for three years. She is proud to have been inducted as a fellow into the International College of Dentists, dentistry's oldest and largest honor society. She also serves on the board of the Mid-Atlantic Dental Meeting, and enjoys volunteering at events such as the NBC4 Health Expo, Mission of Mercy and Give Kids a Smile.

    In her spare time she enjoys traveling and skiing with her husband, gardening and reading.

    Dr. Sam Kleitches: Sam J. Kleitches DDS | Charlotte, NC
    I’ve been practicing since ‘89, and my top priority has always been the care of my patients. The Guardian partnership allows me to focus on my patient care, maintain the highest standards of dentistry, and do the work that I love without the stresses that come with running a business.– Dr. Kleitches
    Dr. Jake Moon: Savannah Dental Care| Aubrey, TX.
    I can keep doing what I’m doing while working toward partnership.– Dr. Jake Moon
    Dr. Yu: Carp Dental | Philadelphia, PA
    Guardian is different. They recognize potential and award partnership benefits right away.– Dr. Yu
    Drs. Hisham Barakat, Sanae Berrada, Uzma Ansari | Virginia
    Our initial and continued partnership with GDP has exceeded our expectations. We used to dream about the success we’re having as a group now. This has truly been a transformational experience in so many ways for everyone on our team.– Hisham Barakat
    Drs. Amit Ganglani, Joti Johal, Thayer Bouali, and Richard Dunning: Fresh Dental | Charlotte Metro
    We’ve always had a clear vision of what our Fresh Dental brand could become. Guardian has helped us focus on bringing that vision to life. We’ll be building new practices, adding great partner practices to our team across our region, and continuing to grow our legacy business. We’re so excited for what’s to come.– Dr. Joti Johal