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Office612 N Marine Corps Dr Ste 8
Tamuning, PR 96913
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- Dr. Donald Preston, MD is a board certified internist in Tamuning, Puerto Rico. He is currently licensed to practice medicine in Guam and Arizona. He is affiliated with Guam Memorial Hospital Authority.
Education & Training
- Creighton University School of Medicine/Maricopa Medical Center (Phoenix)Residency, Internal Medicine, 1982 - 1985
- Oregon Health and Science University School of MedicineClass of 1982
Certifications & Licensure
- GU State Medical License 1988 - 2023
- AZ State Medical License 1985 - 2015
- American Board of Internal Medicine Internal Medicine
- Guam Memorial Hospital AuthorityBarrigada, Guam