Clinicians affiliated with Mass General Brigham Medical Group, Inc.

139 clinicians on file with this group · most practice in Boston-Cambridge-Newton, MA-NH · PAC ID 3971987108

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

129 clinicians affiliated with Mass General Brigham Medical Group, Inc. are in the 2024 Medicare Part B data, 66 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Certified Registered Nurse Anesthetist (CRNA) (41) · Anesthesiology (26) · Internal Medicine (14) · Physician Assistant (8) · Nurse Practitioner (6) · Orthopedic Surgery (6) · Physical Therapist in Private Practice (5) · Family Practice (3) · Gastroenterology (3) · General Surgery (2) · Pulmonary Disease (2) · Allergy/ Immunology (1) · Audiologist (1) · Cardiology (1) · Clinical Cardiac Electrophysiology (1) · Diagnostic Radiology (1) · Emergency Medicine (1) · Hand Surgery (1) · Hospitalist (1) · Interventional Cardiology (1) · Licensed Clinical Social Worker (1) · Occupational Therapist in Private Practice (1) · Psychiatry (1) · Rheumatology (1)

Specialty links go to the specialty in Boston-Cambridge-Newton, MA-NH.

Clinicians affiliated with Mass General Brigham Medical Group, Inc., 2024

Alphabetical by last name; 101–129 of 129.

NameSpecialtyCity
Christine RosebaughCertified Registered Nurse Anesthetist (CRNA)Nashville, TN
Marianne E Roseland, CRNACertified Registered Nurse Anesthetist (CRNA)Westwood, MA
Ingrid P Salciccioli, MBBS, MPHAllergy/ ImmunologyBoston, MA
Christopher P Schultz, MDInternal MedicineAurora, CO
Ryan G Seibert, M.D.Internal MedicineBurlington, MA
Jill D Sharp, CRNACertified Registered Nurse Anesthetist (CRNA)Westwood, MA
Keith A Sieger, CRNACertified Registered Nurse Anesthetist (CRNA)Worcester, MA
Meaghan A Souza, PT, DPTPhysical Therapist in Private PracticeManchester, NH
Christopher P Stanton, PA-CPhysician AssistantPeabody, MA
Richard A Steinbrook, M.D.AnesthesiologyBoston, MA
Michael P Storey, CRNACertified Registered Nurse Anesthetist (CRNA)Boston, MA
Shiv Sutaria, MDInternal MedicineSouth Weymouth, MA
Sarah E Swenson, PA-CPhysician AssistantHaverhill, MA
Stephen M Sylvia, MDOrthopedic SurgeryHaverhill, MA
Karina Tamir, D.O.PsychiatrySalem, NH
Brian K Tanner, CRNACertified Registered Nurse Anesthetist (CRNA)Deerfield Beach, FL
Michael Tarrau, CRNACertified Registered Nurse Anesthetist (CRNA)Miami, FL
Krist Tase, MDAnesthesiologyBoston, MA
Allison Touma, PA-CPhysician AssistantHaverhill, MA
Andrew R Vaclavik, MDAnesthesiologyWest Roxbury, MA
Michal Vascak, MD/PHDAnesthesiologyBoston, MA
Amrit V Vinod, M.D.Orthopedic SurgeryChicago, IL
Katie A Wallace, PTPhysical Therapist in Private PracticeWoburn, MA
Colin J Walsh, CRNACertified Registered Nurse Anesthetist (CRNA)Boston, MA
Janelle Weston, CRNACertified Registered Nurse Anesthetist (CRNA)Boston, MA
Tara Williams, CRNACertified Registered Nurse Anesthetist (CRNA)Cartersville, GA
Yvonne F Wilson, M.D.Internal MedicineSalem, NH
Vlasta F Zdrnja, M.D.Internal MedicineManchester, NH
Xiangwei Zhang, MD MSAnesthesiologyBoston, MA

Practice locations

Listed practice locations in Massachusetts, New Hampshire.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations