Professional Protective Alliance is located at #2 University Plaza, Hackensack, NJ 07601. Contact Us 201-621-9007. Insurance Agency, Dental Insurance Agency, Physician Insurance, Attorney Insurance. With 80 years of proud service to our dental, physician and legal communities, Professional Protective Alliance draws upon our unsurpassed levels of skill and commitment to ensure intelligent insurance solutions to each of our clients. If your professional service results in financial losses to your patient or client, you need to know you have the specific coverage you want. We are proud to be a professional independent insurance agency and we specialize in ensuring that each of our clients obtains the desirable insurance product for their precise needs. Business Hours Monday to Friday 9:00 am – 5:00 pm, Saturday and Sunday Closed.