This page provides you with practical information about our practice. It includes descriptions of our office location, including a map and directions, hours, appointment scheduling, insurance acceptance and billing policies.

Mark C. Valentine, MD
3327 Colby Ave.
Everett, WA 98201

(425) 258-6767

Office Hours
Monday: 09:00 AM - 05:00 PM
Tuesday: 09:00 AM - 05:00 PM
Wednesday: 08:00 AM - 12:00 PM
Thursday: 09:00 AM - 05:00 PM
Friday: 09:00 AM - 05:00 PM
Saturday: Closed
Sunday: Closed

Click here for door-to-door driving directions


We know you have many choices when choosing an dermatologist in Everett, WA.  Making an appointment is as easy as calling our office at 425-258-6767 during business hours.  Remember to bring photo identification, insurance card(s), and any co-payment your insurance requires to your first appointment.  If for any reason you cannot keep a scheduled appointment or will be delayed, please notify our office as soon as possible.

Insurance and Billing

We accept most traditional insurance plans. One of the strengths of North Sound Dermatology is the wide variety of insurance plans with which we are contracted. Please call the office to check if you are not sure your insurance will cover your care with Dr. Valentine.

Many insurers now require a referral from your primary care provider prior to scheduling an appointment in order for your services to be covered.  Make sure you specify that your referral should be for Dr. Valentine at North Sound Dermatology.

Payment Options

Copayments are due at the time of service.  We accept checks, cash, Mastercard, and VISA. We are happy so submit a claim for your charges to your insurance company. Payment plans are available for any balances due after insurance, or if you do not have coverage. Please contact our receptionist with any questions.