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; 1,401–1,500 of 2,771.
| Name | Specialty | City |
|---|---|---|
| Wilfred R Lewis, M.D. | Anesthesiology | Salem, MA |
| Geng Li, M.D., PH.D. | Anesthesiology | Manchester, NH |
| Josephine H Li, M.D. | Endocrinology | Boston, MA |
| Suellen Li | Internal Medicine | Boston, MA |
| Trudy Li, M.D., MPH | Hospitalist | Boston, MA |
| Vivien Li | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Wei Sum Li, M.D. | Internal Medicine | Charlestown, MA |
| Haihui Liao, M.D. | Pathology | Boston, MA |
| Jeff Liao, M.D. | Hospitalist | Boston, MA |
| Daniel Liauw, MD, MPH | Internal Medicine | Chelsea, MA |
| Amanda L Liberty, PMHNP | Nurse Practitioner | Leominster, MA |
| Mary L Lievens, NP | Certified Clinical Nurse Specialist | Boston, MA |
| Harry M Lightsey | Orthopedic Surgery | Boston, MA |
| Evelyn Lilly, M.D. | Dermatology | Boston, MA |
| Carol Lim, M.D. | Psychiatry | Boston, MA |
| Chun Lim, MD | Neurology | Boston, MA |
| Ji Na Lim, MD | Hospitalist | Boston, MA |
| Chih-Chun Lin, M.D. | Neurology | New York, NY |
| David J Lin, MD | Neurology | Boston, MA |
| Helen M Lin, MD | Anesthesiology | Boston, MA |
| Herbert Y Lin, MD PHD | Nephrology | Boston, MA |
| Jessica J Lin, M.D. | Medical Oncology | Boston, MA |
| Joshua K Lin, MD | Hospitalist | Boston, MA |
| Timothy C Lin, MD | Internal Medicine | Boston, MA |
| William M Lin, MD | Dermatology | Boston, MA |
| You Wei Lin, M.D. | Anesthesiology | Milford, MA |
| Stephanie Lin-Beckford, MD | Hospitalist | Boston, MA |
| Lesiley E Lincoln, M. D. | Internal Medicine | Boston, MA |
| Elizabeth C Lindenberger, M.D. | Geriatric Medicine | Boston, MA |
| Mark E Lindsay, M.D., PH.D. | Cardiology | Baltimore, MD |
| Morris Ling, M.D. | Allergy/ Immunology | Boston, MA |
| Margaret Lippincott | Endocrinology | Boston, MA |
| Desta Lissanu, MD | Psychiatry | Boston, MA |
| Andrew S Liteplo, M.D. | Emergency Medicine | Boston, MA |
| Karen A Little, NP | Nurse Practitioner | Peabody, MA |
| Kevin X Liu, MD, DPHIL | Radiation Oncology | Boston, MA |
| Li Liu | Pathology | Boston, MA |
| Shan Liu, MD | Emergency Medicine | Boston, MA |
| Michael Llewellyn, PA-C | Physician Assistant | Boston, MA |
| James T Lloyd, M.D. | Anesthesiology | Boston, MA |
| Janet Lo, MD | Endocrinology | Boston, MA |
| Brianna Locurto | Physician Assistant | Boston, MA |
| Merranda Logan, M.D. | Nephrology | Boston, MA |
| Ryan S Lohre, MD | Orthopedic Surgery | Boston, MA |
| Emily W Lopes, MD | Internal Medicine | Boston, MA |
| Sandy J Lopez, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Maria Clara N Lorca | Diagnostic Radiology | Valhalla, NY |
| Luciane Lord, PA-C | Physician Assistant | Boston, MA |
| Spencer Lord, M.D. | Emergency Medicine | Boston, MA |
| Emily H Lore, FNP | Nurse Practitioner | Boston, MA |
| Mayra E Lorenzo, M.D., PH.D. | Dermatology | Boston, MA |
| Michael K Lorinsky, MD | Hospitalist | Boston, MA |
| Judith M Lotti, NP | Nurse Practitioner | Boston, MA |
| Abner Louissaint, MD, PHD | Pathology | Boston, MA |
| John A Lowry, DO | Physical Medicine and Rehabilitation | Boston, MA |
| Santiago A Lozano Calderon, MD, PHD | Orthopedic Surgery | Boston, MA |
| Mengyun Lu, MD | Internal Medicine | Boston, MA |
| Michael T Lu, MD | Diagnostic Radiology | Boston, MA |
| Shu Y Lu, MD | Anesthesiology | Boston, MA |
| Zhichun Lu, MD | Pathology | Boston, MA |
| Jing Luan, M.D. | Internal Medicine | Cambridge, MA |
| Christina M Luberto, PHD | Psychologist, Clinical | Boston, MA |
| Steven A Lubitz, M.D. | Clinical Cardiac Electrophysiology | Boston, MA |
| James W Luccarelli, MD | Psychiatry | Boston, MA |
| David J Lucier, M.D, M.B.A | Hospitalist | Boston, MA |
| Casey M Luckhurst, MD | General Surgery | Boston, MA |
| Jonathan Ludmir, MD | Cardiology | Boston, MA |
| Catherine Lumb, MD | Internal Medicine | Boston, MA |
| Andrew L Lundquist, MD, PHD | Neurology | Boston, MA |
| Yong Luo, MD | Anesthesiology | Beverly, MA |
| Simona I Lupu, MD | Anesthesiology | Boston, MA |
| Jay Luther, M.D. | Gastroenterology | Boston, MA |
| Maxim I Lutskiy, M.D. | Pediatric Medicine | Boston, MA |
| Amy Ly, MD | Pathology | Boston, MA |
| Thuan V Ly, MD | Orthopedic Surgery | Boston, MA |
| Thuytien T Ly, MD | Obstetrics & Gynecology | Boston, MA |
| Meaghan M Lydon, AGNP-C | Nurse Practitioner | Boston, MA |
| Melody Maarouf, MD | Dermatology | Tucson, AZ |
| David A Macdonald, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Kayleigh D Macdonald | Nurse Practitioner | Boston, MA |
| Miranda E Machacek, MD, PHD | Pathology | Boston, MA |
| Wendy Macias Konstantopoulos, M.D., M.P.H. | Emergency Medicine | Boston, MA |
| Jessica A Mackin, CNP | Nurse Practitioner | Boston, MA |
| Bonnie T Mackool, MD | Dermatology | Boston, MA |
| Rachel L Maclean | Psychiatry | Belmont, MA |
| Courtney M Macphee, NP | Nurse Practitioner | Boston, MA |
| Emilio Madrigal, DO | Pathology | Boston, MA |
| Elizabeth N Madva, MD | Psychiatry | Boston, MA |
| Avinash Maganty, MD | Urology | Boston, MA |
| Carol L Magdalenski, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Westwood, MA |
| Jennifer A Magee, DMD | Oral Surgery (Dentist only) | Boston, MA |
| Olivia R Magnussen, PA-C | Physician Assistant | Boston, MA |
| Christopher Magoon, MD | Psychiatry | Boston, MA |
| Patrick T Maguire, PA-C | Physician Assistant | North Conway, NH |
| Susan Maher, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Boston, MA |
| Umar Mahmood, MD PHD | Diagnostic Radiology | Boston, MA |
| Robert S Makar, MD PHD | Pathology | Boston, MA |
| Antonia Makosky, NP | Nurse Practitioner | Boston, MA |
| Steven Makovitch, D.O | Physical Medicine and Rehabilitation | Newton, MA |
| Mazen A Maktabi, MD | Anesthesiology | Iowa City, IA |
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