Our Providers & Staff

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Our physicians and staff are committed to providing comprehensive, compassionate, personalized patient care. We look forward to serving you! 


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J. Nathaniel Hamilton, M.D., F.A.C.S.

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Gregory F. Murphy, M.D., F.A.C.S.
C.V. // Bio

Jonathan H. Taylor, M.D., F.A.C.S.

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Matthew A. Collins, M.D.

Hugh M. Reeves, M.D., F.A.C.S.

Caroline D. Ryan, MD, FACS

Caroline D. Ames, M.D., F.A.C.S.
C.V. // Bio

Physician's assistants

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Branigan Bissette

Office Staff

Eastern Urological Associates employs a staff of over 50 specially trained personnel to meet your urological needs. Our clinical staff includes registered nurses, licensed practical nurses, medical assistants, registered radiologic technologists, and registered diagnostic medical sonographers. Our CT and urodynamic clinicians have received certification in their fields of practice as well.

Our specially trained staff aides our urologists and physician assistants in the treatment of conditions of the urinary tract and reproductive system, including diseases of the prostate, bladder, kidneys, and male reproductive organs, such as erectile dysfunction, incontinence, male infertility, and more.