Lumenal (formerly Light Doctor)

Founded in 1980, our company is dedicated to providing high-quality lighting design, installation and maintenance services. With so many years of lighting industry experience, the Lumenal Lighting team can handle projects of any size or complexity.

A Team You Can Trust
At Lumenal Lighting, you receive exceptional service every step of the way. It starts with our lighting consultants who listen to what you want, assess energy usage and recommend the best solutions for your situation.

Always keeping an eye on saving you money, our administrative staff knows every aspect of utility company rebate programs and the required paperwork that we can do on your behalf. Our procurement team is on your side too, getting great-quality products at affordable prices. And when a project begins on your premises, you can be certain that our team will be efficient and courteous.

With every job, we earn your business and want to be the team you call for any of your lighting needs. You can count on our team’s professional qualifications and genuine dedication to providing the best possible customer service.

Strict Professional Standards
We have one of the most qualified work forces in the industry. We maintain strict safety standards and zero-tolerance drug policies for our employees. We also require background checks.

You can be confident that every interaction with Lumenal Lighting team members will be professional and reliable. Our Pacific Northwest work is conducted by Lumenal Lighting employees, so you know you’re getting exceptional service and quality result


Key Contacts

Donald Nielsen


Rachael Rieken

General Manager




21706 66th Ave. W
Mountlake Terrace, WA 98043

Building Types Served

  • Commercial
  • Industrial

Business Types

  • Design
  • Energy service company (ESCO)
  • Product sales

Services Offered

  • Commercial/industrial lighting products/services

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