About Walter J. Willoughby, Jr., M.D.

With board certification in pulmonary medicine, sleep medicine, and internal medicine, Walter J. Willoughby, Jr., MD, is uniquely qualified to provide comprehensive care to women and men living in the Las Vegas area. Patients always feel welcome at his practice, where the staff members know each patient by name and take the time to listen to their concerns.

Dr. Willoughby provides personalized and patient-centered care, with a focus on keeping his patients healthy and out of the hospital. Patients can count on receiving the full range of services, including getting their lung function testing done in the office, which is fully equipped with advanced pulmonary testing technology.

In addition to treating patients with common lung diseases such as asthma, COPD, bronchitis, and pneumonia, Dr. Willoughby also provides expert medical care for complex conditions like pulmonary fibrosis and lung cancer.

If you struggle with tiredness and difficulty concentrating because you can’t get a good night’s sleep, you can count on getting the help you need. Dr. Willoughby received his board certification in sleep medicine in 2005 and has extensive experience treating sleep-related problems such as sleep apnea, insomnia, restless legs syndrome, and narcolepsy.

After graduating with a Bachelor of Science Degree in Physiology from Michigan State University in East Lansing, Michigan, Dr. Willoughby obtained his medical degree from Wayne State University School of Medicine in Detroit. From there he received his medical training in Ann Arbor, Michigan, first finishing his internal medicine internship and residency at St. Joseph Mercy Hospital, then completing his pulmonary medicine fellowship at University Hospital, University of Michigan.

Accepted Insurance

At Walter J. Willoughby MD, we accept most major PPO Insurance companies. If you do not see your Insurance providers listed, please contact the office for more information.

United Healthcare



Words from our patients

  • Vitals

    Dr. Willoughby is extremely thorough in his assessment and treatment of respiratory problems. As a patient with Sjogren's Syndrome, Dr. Willoughby is familiar with this..

    Verified Patient
  • Vitals

    He's is the best Doctor. He has been in Las Vegas over 30 years! He is so worth the wait. He takes his time explaining things which makes it so easy to comprehend my.....

    Verified Patient
  • Vitals

    I find Dr. Willoughby to be caring, professional and readily available. He take time with his patients, as much as time as the patients needs or wants. He is honest...

    Verified Patient


Walter J. Willoughby, Jr., M.D.
10105 Banburry Cross Drive, Suite 355
Las Vegas, NV 89144
Phone: 702-998-1400
Fax: 702-998-1333

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