MASSACHUSETTS, Boston
Elizabeth Barnett, M.D.
International Clinic, Boston Medical Center
With an expertise in pediatrics and internal medicine as well as infectious diseases, international health, advocacy, and child development, Barnett specializes in refugee health and in assessing children adopted internationally. Patients are primarily children, adolescents, and young adults (617-414-3623; no Web site).

Mary Wilson, M.D., and Lin Chen, M.D.
Travel Resource Center
Both are widely respected for their academic contributions, notably to international health (617-499-5757; mountauburn.caregroup.org/body.cfm?id=74).

Cambridge
Edward Ryan, M.D.
Massachusetts General Hospital
An associate professor of medicine, Ryan specializes in vaccinations (617-724-1934; no Web site).

Newton
Leonard Marcus, M.D.
Travelers' Health & Immunization Services
He is probably the only tropical/travel specialist in the country who is also a trained veterinarian (617-527-4003; travelmedicalcare.com).

Pittsfield
Laurie Bank, F.N.P.
Hillcrest International Travel Health Services
A respected nurse-led practice (413-499-2054; no Web site).

MICHIGAN, Grandville
Dale Carroll, M.D.
Travel Doctor
Certified in both obstetrics and travel medicine, he is the ideal specialist for the pregnant traveler (616-988-0980; travdoc.com).

MINNESOTA, St. Paul
William Stauffer, M.D
Center for International Health and International Travel Clinic
Stauffer has a part-time appointment at the CDC, in the Division of Migration and Quarantine, and has written extensively on pediatric travel medicine; he lectures nationally and is currently pursuing research in malaria (651-254-4781; no Web site).

NEVADA, Minden
Arthur Dover, M.D.
Tahoe Travel Clinic
A diplomate of the London School of Hygiene and Tropical Medicine and a member of the clinical sections of the ASTMH and the ISTM, he has written extensively about malaria and other infectious diseases (775-783-0892; arthurdovermd.com).

NEW YORK, Briarcliff Manor
Gail Rosselot, N.P.
Travel Well of Westchester, Inc.
A respected nurse-led practice since 1991. Rosselot is a founding member of both the ISTM and the American Travel Health Nurses Association (914-923-7073; no Web site).