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
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; 2,301–2,400 of 2,771.
| Name | Specialty | City |
|---|---|---|
| Ellen Slawsby, PHD | Psychologist, Clinical | Chestnut Hill, MA |
| Benjamin R Slawski, NP | Nurse Practitioner | Boston, MA |
| Donielle F Sliwa, MD, MPH | Internal Medicine | Dover, NH |
| Chloe S Slocum, M.D. | Physical Medicine and Rehabilitation | Charlestown, MA |
| Jonathan E Slutzman, M.D. | Emergency Medicine | Boston, MA |
| Alicia C Smart, MD | Radiation Oncology | Boston, MA |
| Brian Smerkers, MD | Internal Medicine | Somerville, MA |
| Barbara L Smith, MD PHD | Surgical Oncology | Boston, MA |
| Brenda L Smith, NP | Nurse Practitioner | Boston, MA |
| Emily J Smith, PA-C | Physician Assistant | Boston, MA |
| Felicia A Smith, MD | Psychiatry | Boston, MA |
| Matthew Smith, MD PHD | Medical Oncology | Boston, MA |
| Rex N Smith, MD PHD | Pathology | Boston, MA |
| Patrick Y Smithedajkul, MD | Hospitalist | Boston, MA |
| Alexandra R Snell, MS, CNP | Nurse Practitioner | Boston, MA |
| Beth P Snyder, RN, CS | Nurse Practitioner | Boston, MA |
| Arthur J Sober, MD | Dermatology | Boston, MA |
| Carmela S Socolovsky, MD | Pulmonary Disease | Boston, MA |
| Aaron D Sodickson, MD | Diagnostic Radiology | Boston, MA |
| Stephanie Sogg, PHD | Psychologist, Clinical | Boston, MA |
| Aliyah R Sohani, M.D. | Pathology | Boston, MA |
| Douglas Sohn, M.D. | Physical Medicine and Rehabilitation | Boston, MA |
| Usharbudh Sohur, MD PHD | Neurology | Boston, MA |
| Caroline L Sokol, MD, PHD | Allergy/ Immunology | Boston, MA |
| Ken Solt, MD | Anesthesiology | Boston, MA |
| Diane Somlo, MD | Internal Medicine | Newton, MA |
| Zirui Song, MD, PHD | Internal Medicine | Boston, MA |
| Jonathan D Sonis, M.D. | Emergency Medicine | Boston, MA |
| Katherin A Sonneborn, PA | Physician Assistant | Exeter, NH |
| Abraham Sonny, M.D. | Anesthesiology | Boston, MA |
| Tiffany A Soper, RN, FNP | Nurse Practitioner | Boston, MA |
| Emily M Sorg, MD | Psychiatry | Boston, MA |
| David E Sosnovik, MD | Cardiology | Boston, MA |
| Daniel Soto, M.D. | Radiation Oncology | Danvers, MA |
| Jacob D Soumerai, MD | Medical Oncology | Boston, MA |
| Tara E Soumerai, M.D. | Medical Oncology | New York, NY |
| Corey L Southworth, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Laura Spang, C-FNP | Nurse Practitioner | Boston, MA |
| Jamie L Sparling, M.D. | Anesthesiology | Boston, MA |
| Michelle C Specht, MD | Surgical Oncology | Boston, MA |
| Carina P Spencer, M.D. | Internal Medicine | Boston, MA |
| Dimitrios Spentzos, M.D | Medical Oncology | Boston, MA |
| Stefano Spina, MD | Anesthesiology | Boston, MA |
| Katherine Spirovski, RN | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Thomas R Spitzer, MD | Hematology-Oncology | Boston, MA |
| Amy E Spooner | Cardiology | Boston, MA |
| Laura Spring, M.D. | Medical Oncology | Boston, MA |
| Rachael T Springer, MD | General Surgery | Indianapolis, IN |
| Priya Srikanth, MD,PHD | Neurology | Boston, MA |
| Suman Srinivasa, M.D. | Endocrinology | Boston, MA |
| Sunita D Srivastava, M.D. | Vascular Surgery | Cleveland, OH |
| Tessa Stabile | Nurse Practitioner | Boston, MA |
| Amy R Stagg, M.D. | Obstetrics & Gynecology | New York, NY |
| Anna M Stagner, M.D. | Ophthalmology | Boston, MA |
| Kyle D Staller, M.D. | Gastroenterology | Boston, MA |
| Maria Stamou, MD, PHD | Endocrinology | Boston, MA |
| Fatima C Stanford, MD, MPH | Gastroenterology | Boston, MA |
| Christopher J Stapleton, MD | Neurosurgery | Chicago, IL |
| Faith-Anne Starr, PA-C | Physician Assistant | Boston, MA |
| Kara P Stasko, PA-C | Physician Assistant | Boston, MA |
| Nikolaos Stathatos, M.D. | Endocrinology | Boston, MA |
| Dana A Stearns, MD | Emergency Medicine | Boston, MA |
| David J Steele, MD | Nephrology | Boston, MA |
| Hannah Steere, MD | Physical Medicine and Rehabilitation | West Roxbury, MA |
| Rachel Steere, D.O. | Psychiatry | Boston, MA |
| Ada Stefanescu, MDCM MSC | Adult Congenital Heart Disease | Boston, MA |
| Peter Stefanovich, MD | Anesthesiology | Boston, MA |
| Jonathan A Stefely, MD, PHD | Pathology | Boston, MA |
| Michael L Steigner, M.D. | Diagnostic Radiology | Boston, MA |
| Daniel J Stein, MD, MPH | Gastroenterology | Boston, MA |
| Joanne B Stein, MD | Physical Medicine and Rehabilitation | Wellesley, MA |
| Michelle B Stein, MA | Psychologist, Clinical | Boston, MA |
| Rachel Steinhorn | Anesthesiology | Boston, MA |
| Steven N Steinway, M.D., PH.D. | Gastroenterology | Boston, MA |
| Anat O Stemmer-Rachamimov, MD | Pathology | Boston, MA |
| Derek S Stenquist, MD | Orthopedic Surgery | Boston, MA |
| Antonia E Stephen, MD | Surgical Oncology | Boston, MA |
| Christopher D Stephen, M.D., M.R.C.P. (UK) | Neurology | Boston, MA |
| Michael Stephens | Dermatology | Boston, MA |
| Katie M Stewart, NP | Nurse Practitioner | Boston, MA |
| Nicole P Stewart, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Westwood, MA |
| Zachary E Stewart, M.D. | Diagnostic Radiology | Boston, MA |
| Alexandra Stillman, M.D. | Neurology | Boston, MA |
| Joshua St. Louis | Family Practice | Lawrence, MA |
| Mariana A Stoleru, M.D. | Pathology | Boston, MA |
| Mark Stoltenberg, M.D., M.A. | Hospice and Palliative Care | Boston, MA |
| Alexander B Stone, MD | Anesthesiology | Boston, MA |
| Geren S Stone, MD | Internal Medicine | Boston, MA |
| James R Stone, MD, PHD | Pathology | Boston, MA |
| Julianne Stoughton, MD | Vascular Surgery | Stoneham, MA |
| James A Strahan, MD | Diagnostic Radiology | Boston, MA |
| Donna M Stratford, N.P. | Nurse Practitioner | Belmont, MA |
| Abigail F Stratton, PA-C | Physician Assistant | Boston, MA |
| Scott C Streckenbach, M.D. | Anesthesiology | Minneapolis, MN |
| Brendan M Striano, MD | Orthopedic Surgery | Boston, MA |
| Brian Strickland, MD | Emergency Medicine | Boston, MA |
| Matthew R Strickland, M.D. | Internal Medicine | Boston, MA |
| Kristen R Strniste, DO | Internal Medicine | Boston, MA |
| Steven M Stufflebeam, MD | Diagnostic Radiology | Boston, MA |
| Collin M Stultz, M.D. | Cardiology | 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