James S. Gammie
Experienced in Hemolytic Transfusion Reaction

Dr. James S. Gammie

Thoracic Surgery
Johns Hopkins Medicine
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10755 Falls Road, Pavilion I STE 360, Pavilion I STE 360, 
Lutherville, MD 
Clinical Trials:Currently Recruiting for 1 Trial

Experienced in Hemolytic Transfusion Reaction
Johns Hopkins Medicine
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10755 Falls Road, Pavilion I STE 360, Pavilion I STE 360, 
Lutherville, MD 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

James Gammie is the surgical lead and co-director for the Johns Hopkins Heart and Vascular Institute and cardiac surgeon-in-chief for the Johns Hopkins Health System. With over 23 years of experience in cardiothoracic surgery, Dr. Gammie joined Johns Hopkins after serving as chief of the division of cardiac surgery at the University of Maryland Medical Center from 2012 to 2021. Dr. Gammie graduated from Brown University with a degree in biochemistry, and received his medical degree from the University of Massachusetts Medical School. Dr. Gammie trained in both general and cardiothoracic surgery at the University of Pittsburgh School of Medicine. His clinical and research efforts are focused on decreasing the mortality and morbidity of valve disease and improving the surgical treatment of mitral valve and other structural heart diseases. He performs over 225 mitral valve operations and interventions per year, and leads a cardiac surgery team that performs more than 1,200 cardiac operations annually. He is recognized by the Mitral Foundation and the American Heart Association as one of less than 25 reference surgeons in the U.S. for his experience in mitral valve repair and excellent patient outcomes. Dr. Gammie has a strong interest in all aspects of heart valve disease, and has published more than 200 peer-reviewed contributions in leading specialty journals including The New England Journal of Medicine, the Journal of Thoracic and Cardiovascular Surgery and Circulation. He has served as a deputy editor for The Annals of Thoracic Surgery and as chair of the Access and Publications Committee of the Society of Thoracic Surgeons Adult Cardiac Surgery Database. He serves on the steering committee of the NHLBI-sponsored Cardiothoracic Surgery Trials Network, and led the protocol development committee of a worldwide randomized tricuspid valve surgery trial. He is a member of the Halsted Society and the 21st Century Cardiothoracic Surgical Society. In 2011, Dr. Gammie was awarded the Johns Hopkins/University of Maryland Alliance for Science and Technology Development BioMaryland LIFE Prize, and he was named Entrepreneur of the Year at the University of Maryland Baltimore in 2014. He is the inventor of a novel transseptal catheter designed to simplify transcatheter cardiac procedures, and founded a commercial company to commercialize the device. With 20 issued or submitted patents, he continues to innovate in the mitral valve space, and recently published the world’s first clinical experience with a novel surgical repair for secondary mitral valve regurgitation, which was developed in his laboratory: mitral valve translocation. From 2016–2021, Dr. Gammie was consistently named a Top Doctor by Baltimore magazine, and in 2018 he received the Golden Apple Teacher of the Year award.

Dr. Gammie is rated as an Experienced provider by MediFind in the treatment of Hemolytic Transfusion Reaction. His top areas of expertise are Mitral Valve Regurgitation, Tricuspid Regurgitation, Mitral Valve Prolapse, Embolectomy, and Heart Bypass Surgery.

His clinical research consists of co-authoring 194 peer reviewed articles and participating in 10 clinical trials. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 1 article in the study of Hemolytic Transfusion Reaction.

Residency
UPMC-University of Pittsburgh Medical Center, General Surgery, 1995
Specialties
Thoracic Surgery
Licenses
Specialist in MD
Board Certifications
American Board Of Thoracic Surgery
Fellowships
UPMC-University of Pittsburgh Medical Center, Thoracic Surgery, 1999
Hospital Affiliations
The Johns Hopkins Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
Find your insuranceClose

Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
First Health
  • INSURANCE PLAN
  • MEDICARE PDP
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
View 1 Less Insurance Carrier -

Locations

Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10755 Falls Road, Pavilion I STE 360, Pavilion I STE 360, Lutherville, MD 21093
Call: 410-955-2800

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


10 Clinical Trials

Anticoagulation for New-Onset Post-Operative Atrial Fibrillation After CABG
Anticoagulation for New-Onset Post-Operative Atrial Fibrillation After CABG
Enrollment Status: Recruiting
Publish Date: January 20, 2026
Intervention Type: Drug
Study Drugs: Antiplatelet-only strategy, Anticoagulant+Background antiplatelet therapy
Study Phase: Phase 3
Edwards EVOQUE Tricuspid Valve Replacement: Investigation of Safety and Clinical Efficacy After Replacement of Tricuspid Valve With Transcatheter Device
Edwards EVOQUE Tricuspid Valve Replacement: Investigation of Safety and Clinical Efficacy After Replacement of Tricuspid Valve With Transcatheter Device
Enrollment Status: Active_not_recruiting
Publish Date: January 09, 2026
Intervention Type: Device
Study Phase: Not Applicable
Clinical Trial to Evaluate the Safety and Effectiveness of Using the Tendyne Transcatheter Mitral Valve System for the Treatment of Symptomatic Mitral Regurgitation
Clinical Trial to Evaluate the Safety and Effectiveness of Using the Tendyne Transcatheter Mitral Valve System for the Treatment of Symptomatic Mitral Regurgitation
Enrollment Status: Active_not_recruiting
Publish Date: January 08, 2026
Intervention Type: Device
Study Phase: Not Applicable
Medtronic PERIcardial SurGical AOrtic Valve ReplacemeNt Pivotal Trial A Multi-center, Non-randomized Trial to Determine the Safety and Effectiveness of the Model 400 Aortic Valve Bioprosthesis in Patients With Aortic Valve Disease
Medtronic PERIcardial SurGical AOrtic Valve ReplacemeNt Pivotal Trial A Multi-center, Non-randomized Trial to Determine the Safety and Effectiveness of the Model 400 Aortic Valve Bioprosthesis in Patients With Aortic Valve Disease
Enrollment Status: Active_not_recruiting
Publish Date: October 16, 2025
Intervention Type: Device
Study Phase: Not Applicable
Edwards EVOQUE Transcatheter Tricuspid Valve Replacement: Pivotal Clinical Investigation of Safety and Clinical Efficacy Using a Novel Device
Edwards EVOQUE Transcatheter Tricuspid Valve Replacement: Pivotal Clinical Investigation of Safety and Clinical Efficacy Using a Novel Device
Enrollment Status: Active_not_recruiting
Publish Date: October 09, 2025
Intervention Type: Device, Drug
Study Phase: Not Applicable
Long-Term Follow-Up For Participants Of: Evaluation Of Outcomes Following Mitral Valve Repair/Replacement In SMR and Surgical Interventions For MMR Trials
Long-Term Follow-Up For Participants Of: Evaluation Of Outcomes Following Mitral Valve Repair/Replacement In SMR and Surgical Interventions For MMR Trials
Enrollment Status: Active_not_recruiting
Publish Date: July 16, 2025
Intervention Type: Other
AtriCure CryoICE Lesions for Persistent and Long-standing Persistent Atrial Fibrillation Treatment During Concomitant On-Pump Endo/Epicardial Cardiac Surgery
AtriCure CryoICE Lesions for Persistent and Long-standing Persistent Atrial Fibrillation Treatment During Concomitant On-Pump Endo/Epicardial Cardiac Surgery
Enrollment Status: Active_not_recruiting
Publish Date: October 15, 2024
Intervention Type: Device
Study Phase: Not Applicable
Evaluating the Benefit of Concurrent Tricuspid Valve Repair During Mitral Surgery
Evaluating the Benefit of Concurrent Tricuspid Valve Repair During Mitral Surgery
Enrollment Status: Completed
Publish Date: June 18, 2024
Intervention Type: Procedure
Study Phase: Not Applicable
A Clinical Evaluation of the Safety and Effectiveness of the MitraClip® System for the Treatment of Functional Mitral Regurgitation in Symptomatic Heart Failure Subjects (COAPT Recruitment Closed). COAPT CAS (Recruitment Closed)
A Clinical Evaluation of the Safety and Effectiveness of the MitraClip® System for the Treatment of Functional Mitral Regurgitation in Symptomatic Heart Failure Subjects (COAPT Recruitment Closed). COAPT CAS (Recruitment Closed)
Enrollment Status: Unknown
Publish Date: November 27, 2023
Intervention Type: Device
Study Phase: Not Applicable
A Prospective Randomized Trial of Tricuspid Annuloplasty for Moderate Tricuspid Regurgitation Associated With Mitral Operation
A Prospective Randomized Trial of Tricuspid Annuloplasty for Moderate Tricuspid Regurgitation Associated With Mitral Operation
Enrollment Status: Completed
Publish Date: May 08, 2023
Intervention Type: Procedure, Other
Study Phase: Not Applicable
View 9 Less Clinical Trials

195 Total Publications

The ICE-AFIB trial: A multicenter prospective investigational device exemption (IDE) trial using cryosurgical ablation for atrial fibrillation during concomitant cardiac surgery.
The ICE-AFIB trial: A multicenter prospective investigational device exemption (IDE) trial using cryosurgical ablation for atrial fibrillation during concomitant cardiac surgery.
Journal: The Journal of thoracic and cardiovascular surgery
Published: September 02, 2025
View All 195 Publications
Similar Doctors
Glenn Whitman
Experienced in Hemolytic Transfusion Reaction
Dr. Glenn Whitman
Thoracic Surgery
Experienced in Hemolytic Transfusion Reaction
Dr. Glenn Whitman
Thoracic Surgery

The Johns Hopkins Hospital

Baltimore, MD 
 (0.1 miles away)
410-955-5000
Languages Spoken:
English, French, Spanish
See accepted insurances

Glenn Whitman, M.D., joined the Johns Hopkins Division of Cardiac Surgery in 2009 as associate professor of surgery. His training began at the University of Pennsylvania, where he was a resident in surgery from 1979 to 1984. He then finished his general surgery training and then completed his training as a cardiothoracic surgeon at the University of Colorado. Thereafter, Dr. Whitman became an assistant professor at the University of Colorado and chief of cardiothoracic surgery at the Denver Veteran’s Administration Hospital, where he remained for two years. In 1990, he returned to his home city of Philadelphia, where he became chief of cardiac surgery at the Medical College of Pennsylvania, formerly Women’s Medical College, the first medical school in the United States to accept women. Dr. Whitman remained there for eight years before moving to the University of Maryland as chief of cardiac surgery. He has served as the director of transplantation and United Network for Organ Sharing representative at Temple University Hospital in Philadelphia, as well as its director of perioperative services, managing preadmission testing, the operating room, and the post-anesthesia care unit. In 2007, he left Temple for Thomas Jefferson Hospital, taking over the responsibilities of running the cardiac surgery intensive care unit. In summer 2009, he was returned to Baltimore to run the cardiac surgery intensive care unit and oversee the performance improvement/quality assurance program for cardiac surgery at Johns Hopkins. Dr. Whitman’s initial research interests were in cardiac ischemia-reperfusion injury and P31 nuclear magnetic resonance of cardiac bioenergetics, for which he received both National Institutes of Health and Department of Veterans Affairs funding. He has since become involved with quality outcome, and has presented at the American College of Surgeons and the Society of Thoracic Surgeons on the difficulties associated with performance improvement and quality assurance in the field of health care, particularly in the ICU. This past year, Dr. Whitman has stepped down from his role as the Chair of the Society of Thoracic Surgery Workforce on Critical Care, a role he had held since 2014. He continues to participate in the content of the Annual Meetings for the Society of Thoracic Surgery, The American Association of Thoracic Surgery, and The STS Fall Critical Care meetings as the Programmatic Co-Chair for Perioperative Care. This past year he has participated in two major consensus statements on postcardiotomy shock (see below) and low ejection fraction CABG patients (awaiting review). 2020 EACTS/ELSO/STS/AATS ExpertConsensus on Post-CardiotomyExtracorporeal Life Support in Adult Patients Ann Thorac Surg 2012;111:327-69. Dr. Whitman is rated as an Advanced provider by MediFind in the treatment of Hemolytic Transfusion Reaction. His top areas of expertise are Cardiogenic Shock, Compartment Syndrome, Restrictive Cardiomyopathy (RCM), Heart Bypass Surgery, and Heart Transplant.

Experienced in Hemolytic Transfusion Reaction
Dr. Keith Horvath
Thoracic Surgery
Experienced in Hemolytic Transfusion Reaction
Dr. Keith Horvath
Thoracic Surgery

Johns Hopkins Medical Service

3100 Wyman Park Dr, 
Baltimore, MD 
 (2.5 miles away)
301-896-7610
Languages Spoken:
English

Keith Horvath is a Thoracic Surgeon in Baltimore, Maryland. Dr. Horvath is rated as an Advanced provider by MediFind in the treatment of Hemolytic Transfusion Reaction. His top areas of expertise are Heart Tumor, Endocardial Fibroelastosis, Aortic Regurgitation, Transmyocardial Revascularization, and Heart Transplant.

Experienced in Hemolytic Transfusion Reaction
Dr. Murtaza Dawood
Thoracic Surgery
Experienced in Hemolytic Transfusion Reaction
Dr. Murtaza Dawood
Thoracic Surgery

Luminis Health Medical Group LLC

2000 Medical Pkwy Ste 510, 
Annapolis, MD 
 (21.5 miles away)
443-481-1358
Languages Spoken:
English
See accepted insurances

Murtaza Dawood is a Thoracic Surgeon in Annapolis, Maryland. Dr. Dawood is rated as a Distinguished provider by MediFind in the treatment of Hemolytic Transfusion Reaction. His top areas of expertise are Mitral Valve Regurgitation, Aortic Valve Stenosis, Infective Endocarditis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

VIEW MORE HEMOLYTIC TRANSFUSION REACTION DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Gammie's expertise for a condition
ConditionClose
  • Elite
  • Mitral Valve Regurgitation
    Dr. Gammie is
    Elite
    . Learn about Mitral Valve Regurgitation.
    See more Mitral Valve Regurgitation experts
  • Distinguished
  • Embolectomy
    Dr. Gammie is
    Distinguished
    . Learn about Embolectomy.
    See more Embolectomy experts
  • Heart Bypass Surgery
    Dr. Gammie is
    Distinguished
    . Learn about Heart Bypass Surgery.
    See more Heart Bypass Surgery experts
  • Tricuspid Regurgitation
    Dr. Gammie is
    Distinguished
    . Learn about Tricuspid Regurgitation.
    See more Tricuspid Regurgitation experts
  • Advanced
  • Coronary Artery Bypass Graft (CABG)
    Dr. Gammie is
    Advanced
    . Learn about Coronary Artery Bypass Graft (CABG).
    See more Coronary Artery Bypass Graft (CABG) experts
  • Endocarditis
    Dr. Gammie is
    Advanced
    . Learn about Endocarditis.
    See more Endocarditis experts
  • Heart Valve Repair
    Dr. Gammie is
    Advanced
    . Learn about Heart Valve Repair.
    See more Heart Valve Repair experts
  • Infective Endocarditis
    Dr. Gammie is
    Advanced
    . Learn about Infective Endocarditis.
    See more Infective Endocarditis experts
  • Mitral Stenosis
    Dr. Gammie is
    Advanced
    . Learn about Mitral Stenosis.
    See more Mitral Stenosis experts
  • Mitral Valve Prolapse
    Dr. Gammie is
    Advanced
    . Learn about Mitral Valve Prolapse.
    See more Mitral Valve Prolapse experts
View All 8 Advanced Conditions
  • Experienced
  • Acute Respiratory Distress Syndrome (ARDS)
    Dr. Gammie is
    Experienced
    . Learn about Acute Respiratory Distress Syndrome (ARDS).
    See more Acute Respiratory Distress Syndrome (ARDS) experts
  • Aortic Dissection
    Dr. Gammie is
    Experienced
    . Learn about Aortic Dissection.
    See more Aortic Dissection experts
  • Aortic Regurgitation
    Dr. Gammie is
    Experienced
    . Learn about Aortic Regurgitation.
    See more Aortic Regurgitation experts
  • Aortic Valve Replacement
    Dr. Gammie is
    Experienced
    . Learn about Aortic Valve Replacement.
    See more Aortic Valve Replacement experts
  • Aortic Valve Stenosis
    Dr. Gammie is
    Experienced
    . Learn about Aortic Valve Stenosis.
    See more Aortic Valve Stenosis experts
  • Arterial Embolism
    Dr. Gammie is
    Experienced
    . Learn about Arterial Embolism.
    See more Arterial Embolism experts
View All 25 Experienced Conditions
Want to save this doctor for later?
Sign Up
Is this your doctor?
Find A Second Opinion
Not sure about your diagnosis?
Check Your Symptoms
 
 
 
 
Learn about our expert tiers
Learn More
Are you the provider on this profile?
Claim Profile
For Patients
  • Our Story
  • How MediFind Works
  • Conditions A-Z
  • Doctor Directory
  • Symptoms Directory
  • Procedures Directory
  • Treatment Directory
  • Drug Directory
  • Infusion Center Finder
  • FAQ
  • Contact Us
For Providers and Practices
  • Claim Your Profile
  • Newsroom
Business Solutions
  • Provider
  • Network Solutions
Additional Resources
  • Consumer Health Data Privacy Policy
  • Privacy Policy
  • Terms of Use
  • Advertising Policy
  • Content Policy
Subscribe to our newsletter

Sign up to stay informed about MediFind and get wellness sent your way.

Close

    By subscribing, I agree to MediFind's Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.

    Bullet PinMediFind
    Follow us on
    This information is not intended as a substitute for informed medical advice. You should work with a licensed professional to diagnose and treat health conditions. We let the data speak for itself, MediFind does not endorse any healthcare providers.
    © 2026 All Rights Reserved

    Request an Appointment

    If you are experiencing a medical emergency, call 9-1-1.

    MediFind will contact the provider for your appointment request. You’ll receive status updates by email. Your provider or MediFind will reach out to you directly by phone or email to schedule your appointment or request additional information.

    Patient Details

    This information is for the patient who will be seen at the appointment.

      Close

      Returning patient? Use your address on file with the provider.

      Insurance Details

      Please provide information of the primary insurance holder as the practice may require this information to schedule.

      Insurance Provider *
      Insurance ProviderClose

      Appointments Details

      Let’s get more information about your appointment.

              0 / 1000
              0 / 1000
              By pressing the Submit button you are agreeing to MediFind’s Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.