John Gerald Dowd, D.O.

Gastroenterology

Manchester, NH

Specialty

Gastroenterology

Credential

D.O.

NPI

1164498648

Affiliated Facility

Dartmouth Hitchcock Ambulatory Surgery Center

100 Hitchcock Way, Manchester, NH 03104

(603) 695-2500

Medicare★ 2.7 Google (208)96% Patient Rating

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Procedures & Specialty

John Gerald Dowd specializes in Gastroenterology procedures performed in an outpatient ambulatory surgical setting.

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About this profile: Surgeon information is sourced from the CMS National Plan and Provider Enumeration System (NPPES) NPI Registry and reflects the practice address on file as of February 2026. Facility affiliation is based on matching practice address to CMS-certified ambulatory surgery center locations.