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; 1,501–1,600 of 2,771.
| Name | Specialty | City |
|---|---|---|
| Rajeev Malhotra, M.D. | Cardiology | Boston, MA |
| George R Malik, M.D. | Physical Medicine and Rehabilitation | Boston, MA |
| Ann Malley, NP | Nurse Practitioner | Boston, MA |
| Laura M Malloy, LICSW | Licensed Clinical Social Worker | Boston, MA |
| Christine E Maloney, DNP, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Wilfred Mamuya, MD PHD | Cardiology | Brookline, MA |
| Monica Manandhar, MD | Internal Medicine | Waltham, MA |
| Emily Mancini | Nurse Practitioner | Boston, MA |
| Marc D Manganiello, M.D. | Urology | Beverly, MA |
| Justine H Mann, MD | Psychiatry | Boston, MA |
| Michael Mannstadt, MD | Endocrinology | Boston, MA |
| Michael K Mansour, MD, PHD | Infectious Disease | Boston, MA |
| Moussa C Mansour, MD | Clinical Cardiac Electrophysiology | Boston, MA |
| Albert H Mao, MD, PHD | Anesthesiology | Boston, MA |
| Lauren L Maranian, NP | Nurse Practitioner | East Bridgewater, MA |
| Ariel E Marciscano, MD | Radiation Oncology | Boston, MA |
| Peter H Marcus, PSY.D. | Psychologist, Clinical | Boston, MA |
| Julie B Marden, N.P. | Nurse Practitioner | Boston, MA |
| Kendra Margulies, PA-C | Physician Assistant | Boston, MA |
| Keith A Marill, MD | Emergency Medicine | Boston, MA |
| Emily A Marini, NP | Nurse Practitioner | Somerville, MA |
| Michael E Markowski, D.O. | Neurology | Hyannis, MA |
| Guilherme Marmontel Nasi, M.D. | Cardiology | Dover, NH |
| Alexander Marneros | Dermatology | New York, NY |
| Chantelle F Marshall, ANP-BC | Nurse Practitioner | Boston, MA |
| Alister Martin, M.D., M.P.P. | Emergency Medicine | Boston, MA |
| Jacob G Martin, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Charleston, SC |
| Jillian M Martin, MSN | Nurse Practitioner | Boston, MA |
| Neil E Martin, M.D. | Radiation Oncology | Boston, MA |
| Scott D Martin, MD | Orthopedic Surgery | Boston, MA |
| Maria Martinez-Lage Alvarez, MD | Pathology | Boston, MA |
| Sergi Martinez-Ramirez, M.D. | Neurology | Boston, MA |
| Sanchit Maruti, M.D. | Psychiatry | Boston, MA |
| Charles O Masaki, MBCHB | Psychiatry | Boston, MA |
| Nancy M Mason, N.P. | Nurse Practitioner | Ferndale, MI |
| Victoria A Mason, M.D. | Emergency Medicine | Boston, MA |
| Veronica L Massey | Anesthesiology | Tampa, FL |
| J M Massicotte, MD | Urology | Chelmsford, MA |
| Ioannis Mastoris, MD | Advanced Heart Failure and Transplant Cardiology | Boston, MA |
| Sarah A Matathia, MD | Family Practice | Dorchester, MA |
| Wilfredo R Matias, MD, MPH | Internal Medicine | Boston, MA |
| Marcelo Matiello, MD, MSC | Neurology | New Haven, CT |
| Jennifer Matson | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Sofia Matta, M.D. | Psychiatry | Boston, MA |
| Cristina M Matthews, NP | Nurse Practitioner | Boston, MA |
| John D Matthews, MD | Psychiatry | Boston, MA |
| Melissa L Mattison, MD | Hospitalist | Boston, MA |
| Mark A Matza | Rheumatology | Boston, MA |
| Lydia R Maurer, MD | General Surgery | Philadelphia, PA |
| Douglas Maus, MD, PHD | Neurology | Boston, MA |
| Varvara Mazina, MD | Obstetrics & Gynecology | Boston, MA |
| Michael J Mazzini, M.D. | Clinical Cardiac Electrophysiology | Boston, MA |
| Augustus Mazzocca, MD | Orthopedic Surgery | Farmington, CT |
| Steven L Mcafee, MD | Hematology-Oncology | Boston, MA |
| Joseph P Mccain, D.M.D. | Oral Surgery (Dentist only) | Miami, FL |
| Jessica B Mccannon, MD | Pulmonary Disease | Boston, MA |
| Christine E Mccarthy, CNP | Nurse Practitioner | Boston, MA |
| Cian Mccarthy, MD | Cardiology | Boston, MA |
| Maureen W Mccarthy, AGNP-C | Nurse Practitioner | Boston, MA |
| Valerie C Mccarthy | Nurse Practitioner | Boston, MA |
| Rebecca Mcclelland, PA-C, ATC | Physician Assistant | Boston, MA |
| Suzanne M Mccluskey, MD | Infectious Disease | Boston, MA |
| Roderick L Mccoy, MD, PHD | Internal Medicine | Cambridge, MA |
| Cory Mccurry, DO | Anesthesiology | Boston, MA |
| Shaunagh Mcdermott, MBBCH | Diagnostic Radiology | Boston, MA |
| Allison L Mcdonough, MD | Internal Medicine | Waltham, MA |
| Catherine A Mcdonough, R.N., FNP-BC | Nurse Practitioner | Gloucester, MA |
| Jonathan S Mcdougal, M.D. | Diagnostic Radiology | Boston, MA |
| Christopher J Mcdougle, M.D. | Psychiatry | Indianapolis, IN |
| Joseph Mcdowell, M.D. | Anesthesiology | Boston, MA |
| Kathleen Mcelhiney, PA | Physician Assistant | Boston, MA |
| Caleb R Mcentire, MD | Neurology | Boston, MA |
| Kathleen Mcfadden, MD | Internal Medicine | Boston, MA |
| Nicole C Mcfarlane, PHYSICIAN ASSISTANT | Physician Assistant | Boston, MA |
| Casey A Mcgough, NP | Nurse Practitioner | Boston, MA |
| John J Mcgrath, MD | Radiation Oncology | Concord, MA |
| Kerri P Mcgrath, MD | Internal Medicine | Boston, MA |
| Shauna H Mcgrath, NURSE PRACTITIONER | Nurse Practitioner | Boston, MA |
| Kristin L Mcgregor, MSN, ACNPC-AG | Nurse Practitioner | Boston, MA |
| Anna M Mcguire | Anesthesiology | Boston, MA |
| Kelly C Mcinnis, D.O. | Sports Medicine | Boston, MA |
| James F Mcintyre, MD | Radiation Oncology | Danvers, MA |
| Mark J Mckeen, M.D. | Anesthesiology | Boston, MA |
| Robert C Mckenna, PA | Physician Assistant | Boston, MA |
| Sophia K Mckinley, MD | Surgical Oncology | Boston, MA |
| Mitra D Mclarney, M. D. | Physical Medicine and Rehabilitation | Cambridge, MA |
| Kate E Mclaughlin, NP-C | Nurse Practitioner | Boston, MA |
| Theresa C Mcloud, MD | Diagnostic Radiology | Boston, MA |
| Deanna M Mcnally | Nurse Practitioner | Boston, MA |
| Eileen O Mcnicol, C.R.N.A. | Certified Registered Nurse Anesthetist (CRNA) | Westwood, MA |
| Jennifer S Mead, PA-C | Physician Assistant | Boston, MA |
| Catherine Meador, MD, PHD | Internal Medicine | Boston, MA |
| Christina Mealey | Nurse Practitioner | Boston, MA |
| Arielle J Medford | Hospitalist | Boston, MA |
| Ana J Medina Pilar, NP | Nurse Practitioner | Boston, MA |
| Kamal Medlej, M.D. | Critical Care (Intensivists) | Boston, MA |
| Benjamin D Medoff, MD | Critical Care (Intensivists) | Boston, MA |
| Caroline Meehan, MD | Hospice and Palliative Care | Boston, MA |
| Meghan M Meehan, RN, NP | Nurse Practitioner | Boston, MA |
| Carolyn J Mehaffey, MD | Anesthesiology | 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