Regional Digestive Specialists

Our Team

(from left to right: Ronald D. Rinker, M.D.; Renee T. Shiao, M.D.; Catherine P. Hirsch, M.D.; Darrell G. Finlay, M.D.; Julie Messenger, CFNP)

Catherine P. Hirsch, M.D.

Catherine P. Hirsch, M.D.
Diplomate
American Board of Internal Medicine
(Gastroenterology & Hepatology)

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Ronald D. Rinker, M.D.

Ronald D. Rinker, M.D.
Diplomate
American Board of Internal Medicine
(Gastroenterology & Hepatology)

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Darrell G. Finlay, M.D.

Darrell G. Finlay, M.D.
Diplomate
American Board of Internal Medicine
(Gastroenterology & Hepatology)

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Renee T. Shiao, M.D.

Renee T. Shiao, M.D.
Diplomate
American Board of Internal Medicine
(Gastroenterology & Hepatology)

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Julie Messenger, CFNP

Julie Messenger, CFNP