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Doctors / MA

ISSAM A ONEYSSI, MD

INTERNAL MEDICINE

Graduated: 1990

NPI: 1528026622

Practice Locations (2)

UMASS MEMORIAL MEDICAL GROUP INC

100 S ST

SOUTHBRIDGE, MA 015504051

5087659771

UMASS MEMORIAL MEDICAL GROUP INC

55 LAKE AVE N

WORCESTER, MA 016550002

5083341000

Source: CMS National Downloadable File, September 2026.

ISSAM ONEYSSI, MD | HealthCareAtlasUSA