HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / MA

ALLISON S BRYANT MANTHA, MD

OBSTETRICS/GYNECOLOGY

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 1998

NPI: 1386684926

Practice Locations (2)

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

55 FRUIT ST

BOSTON, MA 021142696

6177240287

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

67 CORPORATE DR, BLDG A

PORTSMOUTH, NH 038012847

6034315529

Source: CMS National Downloadable File, September 2026.