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Department of Internal Medicine

Department of Internal Medicine

Division of Rheumatology, Allergy Clinical Immunology

The mission of the Division of Rheumatology, Allergy and Clinical Immunology is better care for our patients. We provide expertise in the fields of immunology, including rheumatic disease, environmental illness, hypersensitivity and autoimmunity. We interact with physicians in a variety of specialties in order to best diagnose and care for patients with severe and often difficult problems. Our goal is to help each and every patient from pediatrics through geriatrics independent of their economic means, distance from our clinic, or severity of their illness.

Patient Care

Our physicians provide consultations for physicians throughout California regarding the diagnosis, treatment and rehabilitation of rheumatic disorders and autoimmune diseases. We also see patients who come from as far away as Europe, Japan and South America. The division features special-emphasis panels in rheumatoid arthritis and systemic lupus erythematosus. In addition, we offer a clinical program to address allergies, including special treatments for food allergies and food hypersensitivity. State-of-the-art therapy for patients with serious and chronic asthma includes a self-care component involving environmental education, food, nutrition and pharmacotherapy. One clinic is dedicated to evaluation, therapy and rehabilitation of the unique problems faced by musicians such as overuse syndromes and tendonitis.


Since 1974, the division has received funding from the National Institutes of Health (NIH). We have led the country by organizing national and state committees to develop cutting-edge research. Our researchers initiated efforts in California to improve understanding and treatment of food allergies and introduced the first oral vaccine for an autoimmune disease. We have pioneered efforts to find cures for patients harmed by their own immune system by investigating responses to food allergens, immunologic mediated liver disease and asthma. Our scientists have developed a notable alternative and complementary medicine program, especially related to asthma. The division actively tests the use of new drugs for patients with serious intractable arthritis. Clinical research also includes the prevention and treatment of overuse syndromes and the role of autoimmunity in rheumatoid arthritis.

Visit the UC Davis Immunology Lab Web site for an in-depth look at the research being done.

Making People Feel Better

The division consists of a unique, versatile multidisciplinary team of rheumatolo-gists, immunologists and allergists dedicated to improving the immune system. We know what it means to suffer from chronic disease, and we want our patients to feel our devotion and thoroughness. The division has new research grants from the NIH totaling more than $2.5 million allocated to finding better treatments. We will use technology to make the important discoveries of this new century and bridge the gaps in our health care system. Our goal is to help people help themselves, start living and stop suffering. If we do not have the answers, we will find them for our patients.



Clinical Faculty

Shirin Ahmad, M.D. 
3201 Data Drive, Rancho Cordova, CA 95670
To make an appointment call: 916-851-1440

Fax: 916-853-1297

Happy Chan, M.D.
8110 Laguna Blvd. Elk Grove, CA 95758
To make an appointment call: 916-683-3955

Fax: 916-683-7290

Gurtej Cheema, M.D. 
4860 Y Street, 0200, Suite A Sacramento, CA 95817 
To make an appointment call: 916-734-2737

Fax: 916-734-5484

M. Eric Gershwin, M.D.
4860 Y Street, 0200, Suite B Sacramento, CA 95817.
To make an appointment call: 916-734-2737

Fax: 916-734-5484

Rosemary Hallett, M.D.
2261 Douglas Blvd. Roseville, CA 95661
To make an appointment call: 916-783-7109

Fax: 916-783-2882

Arshia Islam, M.D.

2261 Douglas Blvd. Roseville, CA 95661

To make an appointment call: 916-783-7109

Fax: 916-783-2882

James Leek, M.D. 
2261 Douglas Blvd. Roseville, CA 95661
To make an appointment call: 916-783-7109

Fax: 916-783-2882

Stanley Naguwa, M.D. 
2660 W. Covell, First Floor, Suite A Davis, CA 95616 
To make an appointmnt call: 530-747-3000

Fax: 530-792-8556

Suzanne Teuber, M.D.
4860 Y Street, 0400, Suite B Sacramento, CA 95817
To make an appointment call: 916-734-2737

Fax: 916-734-5484



Research Faculty

The following faculty are located at:

The Genome & Biomedical Sciences Facility Bldg. 451 Health Sciences Drive, Suite 6510 Davis, CA 95616 Tel: 530-752-2884; Fax: 530-754-6047

Dr. Iannis Adamopoulos

Dr. M. Eric Gershwin

Dr. Xiaosong He

Dr. Pietro Invernizzi

Dr. Patrick Leung

Dr. Stanley Naguwa

Dr. Siba Raychaudhuri

Dr. Carlo Selmi

Dr. Suzanne Teuber

Dr. Judy Van de Water

Dr. Guoxiang Yang