Primary Care Associates

Meet the Massachusetts General Hospital providers of Primary Care Associates.

Sunu Susan Yeh, MD

Sunu Yeh, MD
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Dr. Yeh is a primary care physician with clinical interests including diabetes and women’s health. She received her medical degree from the University of California, San Francisco School of Medicine and completed her residency at the University of California, San Francisco. She is board certified in internal medicine by the American Board of Internal Medicine.

Evelyn S. (Evy) Picker, MD

Evelyn Picker, MD
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As a primary care physician, Dr. Picker’s clinical interests include wellness and preventative medicine. She received her medical degree from the Medical College of Pennsylvania, Hahnemann School of Medicine and completed her residency at Beth Israel Deaconess Medical Center. She is board certified in internal medicine by the American Board of Internal Medicine.

Joanna E. Schwartz, MD

Dr. Joanna E. Schwartz
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Dr. Schwartz received her medical degree from the University of Massachusetts School of Medicine and completed her residency at Dartmouth Hitchcock Medical Center.

Eileen M. Hession, MD

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Dr. Hession received her medical degree from the University of Vermont College of Medicine and completed her residency at Tufts Medical Center.

Robert Korom, MD

Robert Korom, MD

Dr. Korom is a primary care resident in the Massachusetts General Hospital Internal Medicine Residency Program. His clinical interests include general internal medicine and infectious disease. Dr. Korom provides comprehensive primary care to patients with a wide range of personal health goals, including those managing a chronic condition and those interested in maintaining an overall healthy lifestyle. Dr. Korom received his medical degree from Weill Cornell Medical College.

Roxanne Guerriero, ANP-BC

Roxanne Guerriero, ANP-BC
Adult Nurse Practitioner

Roxanne is a board certified adult nurse practitioner. She received her Bachelor of Science in Nursing at the University of Connecticut and her Master of Science in Nursing at Simmons College. She has been practicing primary care at Mass General for over 15 years.