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National Automatic Sprinkler Industry Welfare Fund
National Automatic Sprinkler Metal Trades Welfare Fund

Welcome NASI and NASMT Welfare Fund Participants!

Delta Dental is pleased to welcome NASI and NASMT Welfare Fund Participants to the Delta Dental benefits website. With over 50 years of dental experience, Delta Dental is committed to providing you with exceptional service and an extensive network of dentists to choose from.

Program Information

This website is designed to provide you with a summary of the information you’ll need to make the right dental benefits selection for you and your family. For information on your dental plan options, please click on the Using Your Plan tab on the top of this page.

When it comes to choosing a dental plan, you want benefits that fit the needs of you and your family. Delta Dental PPO offers comprehensive dental coverage, quality care and excellent customer service.

The PPO plan provides access to the largest PPO dentist network in the U.S. Delta Dental PPO dentists agree to accept reduced fees for covered procedures when treating PPO patients. This means your out-of-pocket costs are usually lower when you visit a PPO dentist than when you visit a non-Delta Dental dentist, but you have the freedom to visit any licensed dentist, anywhere in the world.

Your Benefits and Eligibility Information

Sign in to our online services (located in the shaded area on the right side of this page) to print an ID card and view your benefits and eligibility.

Delta Dental group number:
MD 15703 – NASI
MD 15704 – NASMT

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Wellness Resources

Check out our wellness site

Read articles, watch videos and sign up for our e-newsletter.

Are you at risk?

Take this interactive quiz to see if you’re at risk for dental disease.

Visit our kids’ site

Find fun dental health tips, games and stories for kids and health education materials for parents and teachers.

Find more oral health articles

Visit our national association’s oral health and wellness site.

Online Services

Username and Password help.

Start your online account.

Register Today

Find a Dentist


Not sure of your plan?

Log in to Online Services to find a dentist.

View Our Mobile Site Visit Our Mobile Site

Visit on your mobile device.

  • Find Dentists
  • View Benefits and ID Card