503-297-3336 | Patient Portal

About PDEC

Portland Diabetes & Endocrinology Center, P.C., in Portland, Oregon, is one of the oldest and largest independent endocrinology clinics in the United States.

Why choose us?

Our regular office phone hours are 8:30 am – 12:15 pm and 1:30 pm – 4:30 pm Monday through Friday. The roots of our clinic go back to the 1920s when insulin first became available for the treatment of diabetes. Through the years, PDEC physicians have been leaders in the research and advancement of treatment for endocrine diseases. All our physicians are certified as Diplomates in Endocrinology, Diabetes, and Metabolism by the American Board of Internal Medicine.
As a specialty clinic, PDEC does not provide primary care services. The majority of our patients are referred by their primary care providers who value the expertise of our doctors in diagnosing and treating hormonal disorders including problems with the thyroid, pancreas, pituitary, or adrenal glands. Among the most common conditions treated are Diabetes Mellitus Types 1 and 2, Thyroid Disorders, and Osteoporosis. If you believe you have an endocrine condition you should contact your primary care provider first. They can evaluate your symptoms and refer you to a specialist in our clinic if they think it is appropriate. Thank you for visiting our website and considering us to participate with you in your care.


“I’ve been working with Jennifer Murdoch for several years now and my type 2 diabetes is under excellent control!  It wasn’t always easy to get it there but she suggested changes over time and now my A1c is lower than it’s been in years.  She suggested I try the Libre continuous glucose sensor and it immediately helped me manage my blood sugar levels without having to poke my finger.  She helped me learn more about how other problems can come along with diabetes and makes sure we monitor for them at all my visits.  Thank you, Jennifer!”

Dr. Neifing, I want to thank you for having a staff that works so hard for your patients.  I especially want to thank them for the hard work and cooperation in getting our Libre supplies.  As you know, the insurance companies are not always easy to deal with but your staff has been diligent in their efforts to meet my needs.”

Type 1 Diabetes Mellitus

With deep roots in scientific research, innovation, and service, PDEC providers care for thousands of patients with type 1 diabetes, including 100+ patients living and thriving with type 1 diabetes for over 50 years!  Type 1 diabetes, also known as insulin-dependent diabetes and juvenile diabetes, can occur at any age but is most often diagnosed in children and young adults. 


Type 2 Diabetes Mellitus

Research has provided a plethora of treatment options for patients with Type 2 Diabetes. PDEC providers work with each patient to find the best and most cost-effective treatment option for them.

Pregnancy & Diabetes

Women with diabetes historically struggled to find well-educated providers to monitor their health during this exciting journey. PDEC has been here to help along the way and we continue to provide support and education throughout pregnancy.

RFA for Thyroid Nodules

RFA (Radio Frequency Ablation) is a non-surgical solution for shrinking thyroid nodules. RFA procedures are performed in the comfort of our office rather than an outside facility or surgical center. For more information on this procedure, contact our office.

Thyroid Cancer

PDEC’s board-certified endocrinologists are leaders in the diagnosis and treatment of thyroid cancer, treating over 700 thyroid cancer patients who have struggled with this devastating illness. Along with the various treatment options for this multi-faceted disease, our caring staff is skilled at addressing the specific needs of patients and their families.


Treatment options for osteoporosis have greatly increased in recent years. Every year PDEC providers help nearly 2,000 patients better understand what they can do to strengthen bones and decrease their risk of fracture.

Patient Portal

MyHealthRecord Patient Portal allows you to manage appointments, view medications,  manage health records, pay your bill, and more.

Patient Resources

We have curated an extensive list of resources for a variety of conditions including adrenal diseases, osteoporosis, thyroid diseases, and much more.

Patient Forms & Info

Patient forms and information about insurance, Medicare, referrals and authorizations, copayments, balances, and more.

Smart Care Starts Here


9135 SW Barnes Rd, Suite 985, Portland, OR 97225

Fax: 503-297-3338