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Information about Mercy Medical Center’s Transition to Baystate Health

Mercy Medical Center and its affiliated medical group practices joined Baystate Health on November 1, 2026.

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Holly S. Mason, MD

Provider Headshot
Breast Surgery
Ratings
Member of Baystate Medical Practices
Accepting New Patients
Virtual Visits Available
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Background and Clinical Focus

Academic Appointment:

Associate Professor of Surgery at UMass Chan Medical School - Baystate

Languages:

English

Gender:

Female

Age Groups Seen:

Teens, Adults, Geriatrics

Provider Affiliation:

Baystate Medical Center, Baystate Noble Hospital, Baystate Wing Hospital, Baystate Franklin Medical Center

Practice Groups:

Baystate Surgical Oncology & Breast Specialists

Insurances Accepted

Note:

Baystate Healthcare facilities and physicians accept most insurances. Please contact your insurance company to verify eligibility.

  • BLUE SHIELD MEDICARE ADV
  • BLUE SHIELD PPO IND
  • CONNECTICARE
  • CELTICARE
  • AETNA
  • TRICARE
  • HMO BLUE
  • MEDICARE
  • RAILROAD MEDICARE
  • VT MEDICAID
  • UNICARE GIC
  • FIRST HEALTH COVENTRY
  • UNITED HEALTHCARE
  • CT MEDICAID
  • HARVARD PILGRIM
  • CONSOLIDATED
  • CIGNA GREAT WEST
  • TUFTS
  • MULTIPLAN PHCS
  • COMMONWEALTH CARE ALLIANCE
  • NORTHEAST DIRECT
  • TUFTS US FAMILY HEALTH
  • MA MEDICAID
  • SERENITY CARE PACE
  • SENIOR WHOLE HEALTH
  • FALLON NON MASS HEALTH
  • TUFTS PUBLIC PLANS NON MASS HEALTH
  • HEALTH NEW ENGLAND EXCLUDING BE HEALTHY
  • HNE BE HEALTHY PARTNERSHIP
  • FALLON ACO
  • BMC HEALTHNET ACO
  • BMC HEALTHNET MCO
  • TUFTS TOGETHER MCO
  • TUFTS HEALTH TOGETHER ACO

Education and Training

University of Vermont Larner College of Medicine

Medical School, MD, 1995

University of Illinois at Chicago*

Residency, MD, 2000

Scholarly Focus

  • Breast cancer, axillary metastasis, use of neoadjuvant therapy
  • Benign breast disease including atypia

Professional Societies and Leadership Roles

  • American Society of Breast Surgeons (2003-present), Publications Committee (2016-present), Membership Committee (2010-2016)
  • American Society of Breast Surgeons Foundation, Board of Directors (2016-present), Chair, Grants Committee (2020-present)
  • Society of Surgical Oncology (2008-present), Training-Breast Program Directors Subcommittee (2020-present)
  • Association of Women Surgeons (2004-present), Clinical Practice Committee (2016), Database Committee (2013-2015)
  • American College of Surgeons (2005-present), Massachusetts District #1 Committee on Applicants (2013-present)

Awards and Honors

  • Baystate Women in Medicine and Science Impact Award (2021)

Patient Ratings

Patient Experience Ratings

Our patient experience rating is an average of all responses to care provider related questions from our nationally-recognized Press Ganey Patient Experience Survey. Response are measured on a scale of 1 to 5, with 5 being the best score.

Overall Rating
out of 5 ( Ratings)
Review Categories
Patient Comments

Holly S. Mason, MD - Breast Surgery

Lymph Node Surgery for Breast Cancer Webinar

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