Martin Okun, D.D.S. 7201 Wisconsin Ave, Bethesda, MD20814 Dr. Martin Okun is an orthodontist brightening the smiles of Bethesda. Okun provides traditional braces and Invisalign…More for his patients and treats conditions such as underbite, overbite, spacing and crowded teeth. Okun also has an office in Silver Spring. Please call to learn more.