Otterstedt Insurance Agency is located at 540 Sylvan Ave Englewood Cliffs, NJ 07632. Contact Us Tel: 201-227-1800, Fax: 201-227-5020. Insurance Agency, Health Insurance Agency, Life Insurance, Home Insurance, Auto Insurance, Business Insurance. Over 90 years of history—and 1000s of satisfied clients to show for it. Since1919, when Fred H. Otterstedt founded the company, we’ve had a special tie to the families, individuals and businesses we serve.