Clinicians affiliated with Johns Hopkins University
2,909 clinicians on file with this group · most practice in Baltimore-Columbia-Towson, MD · PAC ID 8921903147
2,326 clinicians affiliated with Johns Hopkins University are in the 2024 Medicare Part B data, 1,701 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 (219) · Certified Registered Nurse Anesthetist (CRNA) (188) · Internal Medicine (167) · Anesthesiology (137) · Physician Assistant (137) · Diagnostic Radiology (111) · Neurology (95) · Emergency Medicine (85) · Ophthalmology (76) · Medical Oncology (73) · Psychiatry (72) · Pathology (69) · Cardiology (68) · Infectious Disease (64) · General Surgery (56) · Pulmonary Disease (50) · Gastroenterology (44) · Obstetrics & Gynecology (39) · Orthopedic Surgery (36) · Otolaryngology (34) · Nephrology (33) · Dermatology (30) · Optometry (30) · Physical Medicine and Rehabilitation (28) · Critical Care (Intensivists) (25) · Rheumatology (24) · Psychologist, Clinical (23) · Radiation Oncology (23) · Urology (23) · Neurosurgery (21) · Hospitalist (20) · Endocrinology (19) · Plastic and Reconstructive Surgery (19) · Geriatric Medicine (17) · Hematology-Oncology (16) · Pediatric Medicine (15) · Audiologist (13) · Allergy/ Immunology (9) · Clinical Cardiac Electrophysiology (9) · Thoracic Surgery (9) · Cardiac Surgery (8) · Interventional Radiology (8) · Advanced Heart Failure and Transplant Cardiology (7) · Certified Nurse Midwife (7) · Gynecological Oncology (7) · Hematology (7) · Pain Management (7) · Vascular Surgery (7) · Hospice and Palliative Care (6) · Nuclear Medicine (5) · Medical Genetics and Genomics (4) · Interventional Pain Management (3) · Addiction Medicine (2) · Colorectal Surgery (Proctology) (2) · Family Practice (2) · Hand Surgery (2) · Licensed Clinical Social Worker (2) · Oral Surgery (Dentist only) (2) · Sleep Medicine (2) · Surgical Oncology (2) · Dentist (1) · General Practice (1) · Geriatric Psychiatry (1) · Interventional Cardiology (1) · Maxillofacial Surgery (1) · Occupational Therapist in Private Practice (1) · Podiatry (1) · Registered Dietitian or Nutrition Professional (1)
Specialty links go to the specialty in Baltimore-Columbia-Towson, MD.
Clinicians affiliated with Johns Hopkins University, 2024
Alphabetical by last name; 1,301–1,400 of 2,326.
| Name | Specialty | City |
|---|---|---|
| Nicholas R Mahoney, MD | Ophthalmology | Baltimore, MD |
| Alejandra Maiz, MD | Ophthalmology | Baltimore, MD |
| Cynthia R Major, M.D. | Psychiatry | Baltimore, MD |
| Zahra Maleki, MD | Pathology | Baltimore, MD |
| Divyanshu Malhotra, MD | Nephrology | Baltimore, MD |
| Jawad Malik, M.D. | Nephrology | Frederick, MD |
| Mansoor A Malik, M.D. | Psychiatry | Baltimore, MD |
| Margaret A Mallari, DO | Internal Medicine | Baltimore, MD |
| Jennifer S Mammen, M.D. | Endocrinology | Baltimore, MD |
| Michele A Manahan, MD | Plastic and Reconstructive Surgery | Baltimore, MD |
| Adel Mandl, M.D., PH.D. | Medical Oncology | Bronx, NY |
| Victoria V Manger, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Baltimore, MD |
| Ciera Mangone, MD | Pathology | Baltimore, MD |
| Calin V Maniu, MD | Cardiology | Baltimore, MD |
| Edana Mann, MD | Emergency Medicine | Baltimore, MD |
| Scott Manning, CRNA, MSN | Certified Registered Nurse Anesthetist (CRNA) | Pikesville, MD |
| Lindsey L Manos, DHSC, PA-C | Physician Assistant | Baltimore, MD |
| Zara Manuelyan, M.D. | Gastroenterology | Baltimore, MD |
| Mariuxi C Manukyan, MD | General Surgery | Baltimore, MD |
| Lisa Maragakis, M.D. | Infectious Disease | Baltimore, MD |
| Nicholas Maragakis, M.D. | Neurology | Baltimore, MD |
| Ahmad Marashly, M.D. | Neurology | Seattle, WA |
| Lisa A Marcinko, PAC | Physician Assistant | Perry Hall, MD |
| Richard Marcinko, P.A.-C | Physician Assistant | Baltimore, MD |
| Asa M Margolis, DO, MPH, MS | Emergency Medicine | Baltimore, MD |
| Russell Margolis, M.D. | Psychiatry | Baltimore, MD |
| Joseph Marine, M.D. | Clinical Cardiac Electrophysiology | Baltimore, MD |
| Amy Marino, M.D. | Cardiology | Monroeville, PA |
| Lynette Mark, M.D. | Anesthesiology | Baltimore, MD |
| Mark C Markowski, M.D., PH.D. | Medical Oncology | Baltimore, MD |
| Kristen Marrone, M.D. | Medical Oncology | Baltimore, MD |
| Elisabeth B Marsh, M.D. | Neurology | Baltimore, MD |
| Catherine H Marshall, MD | Medical Oncology | Baltimore, MD |
| Kristin L Martin, M.D. | Obstetrics & Gynecology | Danville, PA |
| Seth S Martin | Cardiology | Baltimore, MD |
| Mahir Maruf, MD | Urology | Ann Arbor, MI |
| Francoise A Marvel, MD | Internal Medicine | Baltimore, MD |
| Courtney G Masear, M.D. | Anesthesiology | Baltimore, MD |
| Steven J Mason, M.D. | Cardiology | Baltimore, MD |
| Megan H Mastalerz, PHD | Psychologist, Clinical | Baltimore, MD |
| Mary M Masterson, P.A. | Physician Assistant | Baltimore, MD |
| Lynne A Mastervich, PA | Physician Assistant | Towson, MD |
| Stephen C Mathai, MD MHS | Pulmonary Disease | Baltimore, MD |
| Gerard O Mathelier, M.D. | Anesthesiology | Baltimore, MD |
| Lena Mathews, MD | Cardiology | Baltimore, MD |
| Nestoras N Mathioudakis, M.D. | Endocrinology | Baltimore, MD |
| Aarti Mathur, M.D | General Surgery | Baltimore, MD |
| Rohan Mathur, MD | Neurology | Baltimore, MD |
| Vineesh Mathur, M.D. | Anesthesiology | Baltimore, MD |
| Brian R Matlaga, M.D. | Urology | Baltimore, MD |
| Andres Matoso | Pathology | Baltimore, MD |
| Esmeralda L Matthews, CRNP | Nurse Practitioner | Baltimore, MD |
| Patty J Mattox, C.R.N.P. | Nurse Practitioner | Baltimore, MD |
| Michail Mavros, M.D. | Surgical Oncology | Little Rock, AR |
| Robert S Mayer, M.D. | Physical Medicine and Rehabilitation | Baltimore, MD |
| Benjamin L Mazer, M.D. | Pathology | Baltimore, MD |
| James Mazjanis, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Clarksburg, MD |
| Julie Mcarthur, C.R.N.P. | Nurse Practitioner | Baltimore, MD |
| Justin C Mcarthur, M.D. | Neurology | Baltimore, MD |
| Megan Mcauliffe | Certified Registered Nurse Anesthetist (CRNA) | Westminster, MD |
| Megan Mcbride, CRNP-PMH | Nurse Practitioner | Baltimore, MD |
| John D Mccadden, PA | Physician Assistant | Baltimore, MD |
| Una D Mccann, M.D. | Psychiatry | Baltimore, MD |
| Regina M Mccartan, CRNM | Certified Nurse Midwife | Baltimore, MD |
| Donald J Mccord, P.A.-C | Physician Assistant | Baltimore, MD |
| Meredith C Mccormack, M.D. | Critical Care (Intensivists) | Baltimore, MD |
| Colleen C Mccormick, M.D. | Gynecological Oncology | Baltimore, MD |
| Jeffrey M Mccue, P.A. | Physician Assistant | Baltimore, MD |
| Jesse L Mcdermeit, MD | Internal Medicine | Baltimore, MD |
| Tanya J Mcdonald, MD | Neurology | Baltimore, MD |
| Edward G Mcfarland, M.D. | Orthopedic Surgery | Lutherville, MD |
| Allison Mcintyre, PA-C | Physician Assistant | Baltimore, MD |
| Keith R Mcintyre, C.R.N.P. | Nurse Practitioner | Lutherville, MD |
| Breana Mckinnon | Nurse Practitioner | Baltimore, MD |
| Francine N Mcleod, MD | Obstetrics & Gynecology | Baltimore, MD |
| Timothy M Mcmahon | Diagnostic Radiology | Baltimore, MD |
| Paige Mcmurtrie | Certified Registered Nurse Anesthetist (CRNA) | Baltimore, MD |
| Matthew K Mcnabney, M.D. | Geriatric Medicine | Baltimore, MD |
| Caroline Mcteague, CRNP | Nurse Practitioner | Lutherville, MD |
| Aziza Mdarhri-Alaoui | Physician Assistant | Baltimore, MD |
| Memory Mdlongwa | Certified Registered Nurse Anesthetist (CRNA) | Crofton, MD |
| Javier B Meade, MD | Medical Oncology | Baltimore, MD |
| Rachael Mebus, APRN | Nurse Practitioner | Hartford, CT |
| Christopher A Mecoli, M.D. | Rheumatology | Baltimore, MD |
| Elizabeth F Medina, C.R.N.A. | Certified Registered Nurse Anesthetist (CRNA) | Baltimore, MD |
| Monica Meeks | Internal Medicine | Baltimore, MD |
| Semira Meharena | Nurse Practitioner | Elkridge, MD |
| Ambereen K Mehta, MD, MPH | Hospice and Palliative Care | Baltimore, MD |
| Yanqing Mei, M.D. | Diagnostic Radiology | Baltimore, MD |
| Christina Irene D Mejia, MD | Nephrology | Baltimore, MD |
| Joanna M Melia, M.D. | Gastroenterology | Baltimore, MD |
| Michael T Melia, M.D. | Infectious Disease | Baltimore, MD |
| Pedro A Mendez-Tellez, M.D. | Anesthesiology | Baltimore, MD |
| Steven P Menez, MD | Nephrology | Baltimore, MD |
| Dawn Merbach, FNP-C | Nurse Practitioner | Baltimore, MD |
| Rebecca Meredith, MD | Hospitalist | Baltimore, MD |
| Christian A Merlo, M.D. | Critical Care (Intensivists) | Baltimore, MD |
| Olurotimi Mesubi, MD | Internal Medicine | Baltimore, MD |
| Thomas Metkus, MD | Cardiology | Baltimore, MD |
| Jennifer M Meuchel, M.D. | Psychiatry | Baltimore, MD |
Practice locations
Listed practice locations in District of Columbia, Maryland, Missouri, North Carolina.
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