Clinicians affiliated with Massachusetts General Physicians Organization Inc

3,558 clinicians on file with this group · most practice in Boston-Cambridge-Newton, MA-NH · PAC ID 2466365820

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

2,771 clinicians affiliated with Massachusetts General Physicians Organization Inc are in the 2024 Medicare Part B data, 2,106 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 · Nurse Practitioner (331) · Internal Medicine (250) · Diagnostic Radiology (166) · Physician Assistant (166) · Anesthesiology (149) · Neurology (141) · Certified Registered Nurse Anesthetist (CRNA) (101) · Cardiology (96) · Psychiatry (90) · Pathology (85) · Hematology-Oncology (81) · Emergency Medicine (79) · Hospitalist (76) · Physical Medicine and Rehabilitation (72) · Gastroenterology (71) · Endocrinology (57) · Infectious Disease (56) · General Surgery (52) · Medical Oncology (46) · Dermatology (43) · Psychologist, Clinical (42) · Nephrology (41) · Pulmonary Disease (41) · Orthopedic Surgery (39) · Obstetrics & Gynecology (38) · Radiation Oncology (36) · Critical Care (Intensivists) (24) · Hospice and Palliative Care (23) · Rheumatology (23) · Neurosurgery (22) · Urology (21) · Allergy/ Immunology (18) · Family Practice (17) · Clinical Cardiac Electrophysiology (16) · Thoracic Surgery (16) · Vascular Surgery (13) · Surgical Oncology (12) · Oral Surgery (Dentist only) (10) · Plastic and Reconstructive Surgery (10) · Advanced Heart Failure and Transplant Cardiology (9) · Geriatric Medicine (8) · Hematology (8) · Pediatric Medicine (8) · Interventional Cardiology (7) · Sports Medicine (7) · Adult Congenital Heart Disease (5) · Cardiac Surgery (5) · Pain Management (5) · Colorectal Surgery (Proctology) (4) · Licensed Clinical Social Worker (4) · Otolaryngology (4) · Podiatry (4) · Addiction Medicine (3) · Gynecological Oncology (3) · Hand Surgery (3) · Interventional Radiology (3) · Registered Dietitian or Nutrition Professional (3) · Certified Clinical Nurse Specialist (2) · Certified Nurse Midwife (1) · Interventional Pain Management (1) · Licensed Professional Counselor (1) · Maxillofacial Surgery (1) · Ophthalmology (1) · Preventive Medicine (1)

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

Clinicians affiliated with Massachusetts General Physicians Organization Inc, 2024

Alphabetical by last name; 2,201–2,300 of 2,771.

NameSpecialtyCity
Muriel SchwinnNurse PractitionerBoston, MA
Amanda Scott, RN, MSN, FNP-BCNurse PractitionerBoston, MA
Nandita S Scott, MDCardiologyBoston, MA
Sherry D Scovell, M.D.Vascular SurgeryBoston, MA
Raghu R Seethala, M.D.Critical Care (Intensivists)Weymouth, MA
Harish Shanthanu SeethapathyNephrologyBoston, MA
Jacqueline A Seiglie, MDEndocrinologyBoston, MA
Adith Sekaran, M.D.HospitalistBoston, MA
Yevgeniy R Semenov, MD, MADermatologyBoston, MA
Gail E Semigran, MDCardiologyBoston, MA
Stephanie B Seminara, MDEndocrinologyBoston, MA
Pritha Sen, MDInfectious DiseaseBoston, MA
Kieun Seok, MDHospitalistBoston, MA
Lecia V Sequist, MDHematology-OncologyBoston, MA
Maya N Serhal, MDInterventional CardiologyBoston, MA
Alberto Serrano Pozo, M.D. PHDNeurologyBoston, MA
Madeleine SerticDiagnostic RadiologyBoston, MA
Reza Seyedsadjadi, M.D.NeurologyBoston, MA
Keit Sfeci, NPNurse PractitionerBoston, MA
Dennis C Sgroi, MDPathologyCharlestown, MA
Jeffry R Shaefer, DDSOral Surgery (Dentist only)Boston, MA
Bhavika K Shah, CRNACertified Registered Nurse Anesthetist (CRNA)Boston, MA
Dhara K Shah, MDPsychiatryBoston, MA
Priyanca Shah, DOPhysical Medicine and RehabilitationCharlestown, MA
Sachin J Shah, MDInternal MedicineBoston, MA
Shimul A Shah, MDGeneral SurgeryBoston, MA
Sonal J Shah, M.D.Internal MedicineWellesley, MA
Viral S Shah, MD,PHDInternal MedicineBoston, MA
Ali Shahzad, MDHospitalistBrooklyn, NY
Bernard E Shalit, MDInternal MedicineBoston, MA
Jaclyn Shameklis, M.D.Hospice and Palliative CareBoston, MA
Alykhan F ShamjiGastroenterologyBoston, MA
Ganesh M Shankar, MD, PHDNeurosurgeryBoston, MA
Esther S Shao, M.D.Advanced Heart Failure and Transplant CardiologyScarborough, ME
Mara Shapero, MDAllergy/ ImmunologyBoston, MA
Marc J Shapiro, M.D.Emergency MedicineNew Haven, CT
Eric Shappell, MDEmergency MedicineBurr Ridge, IL
Amita Sharma, MBBSDiagnostic RadiologyBoston, MA
Nutan Sharma, MD PHDNeurologyBoston, MA
Jill D Sharp, CRNACertified Registered Nurse Anesthetist (CRNA)Westwood, MA
Christopher J Shaw, NPNurse PractitionerJamaica Plain, MA
Elizabeth Shaw, NPNurse PractitionerBoston, MA
Kendrick M Shaw, MD, PHDAnesthesiologyBoston, MA
Barry S Shea, M.D.Pulmonary DiseaseBoston, MA
Cristina A Shea, MDPhysical Medicine and RehabilitationBoston, MA
Daniel J Sheehan, M.D.Physical Medicine and RehabilitationEast Sandwich, MA
Kenneth T Shelton, M.D.AnesthesiologyBoston, MA
Shiqian Shen, M.D.AnesthesiologyBoston, MA
Erica S Shenoy, MD, PHDInfectious DiseaseBoston, MA
Anuradha S Shenoy-Bhangle, MBBSDiagnostic RadiologyBoston, MA
Joanne O Shepard, MDDiagnostic RadiologyBoston, MA
Kathryn Sheppard, PA-CPhysician AssistantWaltham, MA
Alice M Sheridan, M.D.NephrologyBoston, MA
Emily A Sheridan, CRNACertified Registered Nurse Anesthetist (CRNA)Boston, MA
Janet C Sherman, PHDPsychologist, ClinicalBoston, MA
Kenneth E Sherman, M.D.GastroenterologyCincinnati, OH
Marc Sherman, MDGastroenterologyBoston, MA
Dipak Sheth, MDInternal MedicineBeverly, MA
Tina Shiang, M.D.Diagnostic RadiologyBoston, MA
Angela R Shih, MDPathologyBoston, MA
Helen A Shih, MDRadiation OncologyBoston, MA
Shirley L Shih, M.D.Physical Medicine and RehabilitationCharlestown, MA
Leonid M Shinchuk, M.D.Physical Medicine and RehabilitationBedford, MA
Hamid Shokoohi, MD, MPHEmergency MedicineWashington, DC
Lynette M Sholl, M.D.PathologyBoston, MA
Douglas C Shook, MDAnesthesiologyBoston, MA
Shreya Shrestha, MDHospitalistBoston, MA
Stuti G Shroff, MD, MBBSPathologyBoston, MA
Kristina A Shultz, NPNurse PractitionerBoston, MA
Jeffrey Y Shyu, M.D.Diagnostic RadiologyBoston, MA
Leonard Sicilian, MDCritical Care (Intensivists)Boston, MA
Ahmad D Siddiqui, MDHematology-OncologyNorthampton, MA
Mark J Siedner, MDInfectious DiseaseBoston, MA
Jennifer R Siegel, M.D.Internal MedicineBoston, MA
Michael G Silverman, M.D.CardiologyBoston, MA
Scott B Silverman, M.D.NeurologyWorcester, MA
Brett Simchowitz, MD, MPHInternal MedicineBoston, MA
Frank J Simeone, MDDiagnostic RadiologyBoston, MA
Joseph F Simeone, MDDiagnostic RadiologyBoston, MA
Petra Simic, MD, PHDNephrologyBoston, MA
Daimon P Simmons, M.D., PH.DPathologyBoston, MA
Leigh H Simmons, M.D.Internal MedicineBoston, MA
Tracey G Simon, M.D.GastroenterologyBoston, MA
Lisa M Simonian, NPNurse PractitionerCambridge, MA
James Simpson, MDAnesthesiologyBoston, MA
Ajay K Singh, MDDiagnostic RadiologyBoston, MA
Amandeep Singh, MD, PHDGastroenterologyBoston, MA
Harshabad Singh, MDHospitalistBoston, MA
Jagmeet P Singh, MD PHDClinical Cardiac ElectrophysiologyBoston, MA
Parmanand Singh, MDCardiologyBoston, MA
Aneesh B Singhal, MDNeurologyBoston, MA
Victoria A Sinyak, PA-CPhysician AssistantBoston, MA
Tamar E Siracusa, APRNNurse PractitionerNorth Quincy, MA
Meghan E Sise, M.D.NephrologyBoston, MA
Rachel C Sisodia, M.D.Obstetrics & GynecologyBoston, MA
Kristina F Skarbinski, FNP-BCNurse PractitionerBoston, MA
Jennifer Skolnik, DPMPodiatryBoston, MA
Blake R Slack, CNM, WHNPCertified Nurse MidwifeBoston, MA
Michael C Slama, M.D., PH.D.NeurologyBrighton, MA
Kathryn A Slattery, RNCertified Registered Nurse Anesthetist (CRNA)Boston, MA

Practice locations

Listed practice locations in Arkansas, California, Connecticut, District of Columbia, Florida, Georgia, Illinois, Massachusetts, Maryland, Michigan, Missouri, New Hampshire, Texas, Washington.

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