At Bellingham Arthritis & Rheumatology Center, we understand the challenges and complexity of rheumatic diseases. Our doctors and staff are dedicated to providing the highest standard of rheumatologic care and education, tailored to the individual needs, circumstances and desires of each patient.

There are more than 100 types of diseases covered by Rheumatology. These include rheumatoid arthritis, osteoarthritis, gout, lupus, back pain, osteoporosis, bursitis and tendonitis. Some of these are very serious diseases that can be difficult to diagnose and treat.

That is why our physicians spend a substantial amount of time during office visits. They follow up directly after appointments as necessary, and provide your primary care providers with regular and timely updates to assist in a better overall healthcare experience for you.

Your health and well-being is important to us and our goal is to help you get back to the active lifestyle you enjoy.


Margaret Kinsella, MD

Dr. Kinsella is certified in Rheumatology through the American Board of Internal Medicine and is a member of the American College of Rheumatology. She attended medical school at the St. Louis University School of Medicine, completed her Internal Medicine Residency and Rheumatology Fellowship programs at the Medical University of South Carolina where her research focused on Scleroderma.

Dr. Kinsella is the mother of 3 young adults. She loves swimming, yoga, cooking, gardening and many outdoor activities such as camping, hiking and bicycling. Passionate about healthy lifestyle and family, Dr. Kinsella enjoys integrating these values into her medical practice. She is enthusiastic about the combination of diagnostic dilemmas and her long term relationships with patients.


Naomi Sullivan, MD

Dr. Sullivan is certified in Rheumatology through the American Board of Internal Medicine. She attended Princeton University on an Army ROTC scholarship and Mount Sinai School of Medicine through the Humanities and Medicine program. She completed her Residency at Madigan Army Medical Center and her Fellowship at Walter Reed Army Medical Center. Dr. Sullivan is a member of the American College of Rheumatology and a fellow in the American College of Physicians.

Dr. Sullivan, mother of 3 young children, leads a very active lifestyle. She enjoys spending her free time with her family and can often be found at soccer fields, basketball courts, and wherever else her children’s lives may take her. An avid runner, Dr. Sullivan enjoys participating in local races such as The Arthritis Foundation’s Jingle Bell Run. Dr. Sullivan loves the field of Rheumatology and she appreciates the opportunity to help others return to the activities they enjoy and to assist them in leading healthy, productive lives.



Lucy is a Goldendoodle from Annie’s Doodles in Ferndale. She loves people, treats, and long walks. While not an official therapy dog, she provides a calm and loving demeanor for anyone in need! Lucy usually carpools to work with Dr. Kinsella and is in the office several days a week.