Specialties Abound at NorthBay

NorthBay offers an array of specialty care services, with experts on everything from cancer and diabetes to gastroenterology and rheumatology.

Otolaryngology (Ear Nose Throat)

For the first time this fall, NorthBay Healthcare will be able to offer ear, nose, throat and voice specialists —all under one roof.

Moving into a third-floor suite in the Gateway Medical Plaza, 1860 Pennsylvania Ave., in Fairfield is a familiar face. Dr. Murray Woolf, M.D., served many years as a board member on the NorthBay Healthcare Group Board and currently serves on the NorthBay System Board. Now he will join the NorthBay Medical Group. His specialty is otolaryngology, which focuses on health issues of the ears, nose, and throat as well as head and neck. He will be joined by Dr. Shaulnie Mohan, also an Ear/Nose/Throat specialist.

They will team up with speech therapist Scott Jackson and an audiologist to provide all levels of service across the continuum of the specialty, according to Justine Zilliken, assistance vice president of Specialty Care.

“It will be a one-stop shop for patients, allowing us to offer a seamless experience,” said Justine.

Plans call for the office to open in September and Dr. Woolf said having such a team working together under one roof will be a great asset to NorthBay’s patients.

“We will be able to give comprehensive and coordinated care for our patients,” he said.

Dr. Woolf earned his medical degree at the University of California, San Diego and completed his specialty training at U.C. San Francisco. He has practiced medicine in Fairfield for 30 years.

Dr. Mohan graduated from Boston University School of Medicine and completed a residency at St. Louis University Medical Center.

Otolaryngology Specialists

Diabetes & Endocrinology

NorthBay Center for Diabetes & Endocrinology is undergoing a transformation, according to Justine Zilliken, assistant vice president of Specialty Care.

This summer a new team of endocrinologists and diabetologists, along with a certified diabetes educator, a nurse practitioner, a clinical pharmacist specializing in diabetes and a nutritionist, will offer the most complete care possible.

“This is a real game-changer for us,” said Justine. “We’re not just maintaining our services with the new endocrinologist, we’re adding two diabetologists, who can oversee care for the complex, specific needs of diabetes patients. We’ll be able to monitor the rising risk of patients from Type I and Type II diabetes, gestational diabetes and diabetes in geriatric patients.

“This complete team will allow us to address all facets of diabetes and offer a 360-degree approach to the diseases of the endocrine system.”

Joining the center are endocrinologist John McKenna, M.D. In addition, diabetologists Jay Shubrook, D.O., and Sumera Ahmed, M.D., are part of the team as well as diabetes educator Clipper F. Young, Pharm.D.

Diabetes & Endocrinology Specialists

General Surgery

NorthBay’s general surgeons offer procedures such as hernia repairs, gallbladder removal, colon cancer surgery and hemorrhoid removal.


Physicians, advanced health practitioners and nurses make up a team of experts who use a variety of advanced treatments to address digestive health concerns including pancreatitis, colitis, gallbladder and biliary tract disease, colon, bowel, pancreatic and gallbladder cancer. The team also specializes in the treatment of hepatitis C and irritable bowel syndrome.

Gregory Warner, D.O.
Gregory Warner, D.O.

Infectious Disease

NorthBay Healthcare’s infectious disease expert focuses on treating issues such as pneumonia, non-healing wounds, skin/tissue and bone infections, tuberculosis and HIV/AIDS.

Infusion Services

Infusion treatments are available for neurology, gastroenterology and rheumatology patients, for cancer patients who may need intravenous medications and blood/blood products, for patients who may need non-chemotherapy IV drugs to treat dehydration, nausea/vomiting and infections, and a Coumadin Clinic on Tuesdays and Thursdays at NorthBay VacaValley Hospital and on Mondays, Wednesdays and Fridays at the Gateway Medical Plaza for infusion of anticoagulants or blood-thinning medicines.

Osteopathic Manipulative Medicine

Osteopathic Manipulative Medicine (OMM) is an advanced form of hands-on care that focuses on treating the whole person, rather than the symptoms, with a goal of helping the body to heal itself. NorthBay’s two osteopathic physicians have received specialized training in nerves, muscles, and bones to diagnose, treat and prevent illness and injury through this form of care.

Osteopathic Specialists

Pain Management

Our care team for Pain Management includes physicians who consult with nutritionists and physical therapists and work together with the Center for Neuroscience in the NorthBay Spine Program. They focus on everything from back and neck pain to runner’s knee, headaches, chest wall pain, spinal pain and more.

Pulmonary Medicine

Pulmonologists focus on helping patients living with asthma, Chronic Obstructive Pulmonary Disease (COPD), and pulmonary hypertension. Pulmonary function testing is offered in office.

Donald Doyle, M.D.
Donald Doyle, M.D.

Sleep Medicine

A NorthBay pulmonary sleep medicine specialist helps with conditions such as insomnia, sleep walking, sleep talking, and restless leg syndrome.

Melissa Schoenwetter, D.O.
Melissa Schoenwetter, D.O.


A NorthBay rheumatologist cares for patients with conditions affecting the joints, muscles and connective tissues such as gout, fibromyalgia, lupus and rheumatoid arthritis.


A team of physicians and advanced health care practitioners deliver urological services at both NorthBay Healthcare hospital campuses in Fairfield and Vacaville, as well as in Napa. NorthBay also offers the innovative Urolift procedure for the treatment of enlarged prostate or BHP.

Wound Care

A team of specialists offers a variety of treatments and therapies. Patients with non-healing wounds can be treated with hyperbaric oxygen therapy, negative pressure wound therapy, compression therapy, bio-engineered skin substitutes, ostomy care and wound debridement.

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