About me
Dr. Hallak is a board-certified nephrologist with more than 10 years’ experience in the field. He is also board certified in internal medicine. He specializes in treating people with kidney transplants, solid organ transplant recipients with chronic kidney disease, imbalances in electrolytes caused by kidney disease, glomerulonephritides (a condition that causes inflammation and scarring of the kidneys’ filters that cause the kidneys to lose the ability to remove waste and excess fluid from the blood), and high blood pressure that does not respond to aggressive treatment.
His areas of research, special interest, and expertise include the use of biomarkers to improve the lifespan of transplanted kidneys and management of chronic kidney disease in solid organ transplant recipients. He is a member of the American Society of Nephrology and the American Society of Transplantation.
He earned his medical degree from St. Joseph University of Beirut in Lebanon. Dr. Hallak completed his internship and residency at Indiana University, School of Medicine in Indianapolis. He also completed two fellowships—one in nephrology at University of Chicago, Biological Sciences Division, Department of Medicine and one in transplant nephrology at Northwestern University Comprehensive Transplant Center in Chicago, IL.
Dr. Hallak always takes the time to listen to his patients and address their concerns, focusing on education, improvement of adherence, and preventive medicine. He sees patients at MedStar Georgetown University Hospital and is a fluent English, French, and Arabic speaker.
When he’s not working, Dr. Hallak enjoys playing tennis, cycling, cooking, and learning new languages.
Conditions and procedures
Conditions I treat
- Abdominal Abscess
- Abdominal Adhesions
- Abdominal Wall Defect
- Advanced Heart Failure (ADHF)
- Arrhythmogenic Right Ventricular Dysplasia
- Beriberi
- Bile Duct Mass
- Biliary Colic
- BK Virus Nephropathy
- Cardiac Amyloid
- Cardiac Sarcoidosis
- Cardiomyopathy
- Cholecystitis
- Colonic Volvulus
- Congestive Heart Failure (CHF)
- Cor Pulmonale
- Diabetic Cardiomyopathy
- Diaphragmatic Hernia
- Dilated Cardiomyopathy
- Epigastric Hernia
- Familial Dilated Cardiomyopathy
- Femoral Hernia
- Fistula Enterocutaneous
- Gallbladder Cancer
- Gallbladder Disease
- Gastrointestinal (GI) Stromal Tumors
- Genetic Cardiomyopathy
- Giant Cell Myocarditis
- Graft Versus Leukemia Effect
- Hemorrhoids
- Hernia
- Hiatal Hernia
- Hypertrophic Cardiomyopathy
- Idiopathic Hypertrophic Subaortic Stenosis
- Incarcerated Hernia
- Incisional Hernia
- Inclusion Cyst
- Infiltrative Disorders Of The Heart
- Inguinal Hernia
- Internal Hernia
- Intestinal Fistula
- Intestinal Infarction
- Intestinal Obstruction
- Intussusception
- Lipomas
- Liver Cancer
- Mechanical Complication Of Gastrostomy
- Mesenteric Cyst
- Mesenteric Mass
- Midaortic Syndrome
- Myocarditis
- Pancreas Cancer
- Pancreaticobiliary Disease
- Paraesophageal Hernia
- Parastomal Hernia
- Perforation Of Gallbladder
- Peridiverticular Abscess
- Pilar Cyst
- Pilonidal Disease
- Portal Pyemia
- Pulmonary Edema
- Rectus Sheath Hernia
- Recurrent Femoral Hernia
- Recurrent Hernia
- Reducible Hernia
- Restrictive Cardiomyopathy
- Rheumatic Heart Disease
- Rheumatic Heart Failure
- Richter Hernia
- Right Heart Failure
- Right Ventricular Cardiomyopathy
- Skin Abscess
- Small Bowel Obstruction
- Small Intestine Cancer
- Spigelian Hernia
- Splenic Anomalies
- Splenic Cyst
- Splenic Mass
- Splenomegaly
- Stomach Fistula
- Subphrenic Abscess
- Tachycardia Induced Cardiomyopathy
- Takotsubo Cardiomyopathy
- Thyroid Nodule
- Umbilical Hernia
- Varicose Veins
- Ventral Hernia
- Viral Cardiomyopathy
Procedures I perform
- Abdominal Surgery
- Abdominal Wall Reconstruction
- Allogeneic Bone Marrow Transplant
- Appendectomy
- Autologous Bone Marrow Transplant
- Bone Marrow Transplant
- Breast Biopsy
- Cecostomy
- Cholecystectomy
- Chronic Inotropic Therapy
- Circulatory Assist Devices
- Donor Lymphocyte Infusion
- Duodenal Ulcer Surgery
- Endoscopic Surgery
- Fine Needle Aspiration
- Fundoplication
- Gastroesophageal Reflux Surgery
- Heart Biopsy
- Hernia Repair
- Hiatal Hernia Repair
- Hickman Catheter
- High Dose Cyclophosphamide
- Home Inotropes
- Ileostomy
- Incision And Drainage
- Infusaport Placement
- Inguinal Hernia Repair
- Islets Of Langerhans Transplant
- Laparoscopic Appendectomy
- Laparoscopic Cholecystectomy
- Laparoscopic Gastrostomy
- Laparoscopic Hernia Repair
- Laparoscopic Hiatal Hernia Repair
- Laparoscopic Incisional Hernia Repair
- Laparoscopic Inguinal Hernia Repair
- Laparoscopic Lymph Node Biopsy
- Laparoscopic Pancreatectomy
- Laparoscopic Recurrent Hernia Repair
- Laparoscopic Splenectomy
- Laparoscopic Toupet Fundoplication
- Laparoscopic Treatment Of Small Bowel Obstruction
- Laparoscopic Umbilical Herniorrhaphy
- Laparoscopic Ventral Hernia Repair
- Laparoscopy
- Liver Transplant
- Lung Transplant
- Lymph Node Biopsy
- Lysis Of Adhesions
- Marrow Stem Cell Defects Treatment
- Mechanical Circulatory Support
- Mediports
- Minimally Invasive Surgery
- Muscle Biopsy
- Musculoskeletal Biopsy
- Pancreas Cancer Surgery
- Pancreatic Surgery
- Partial Splenectomy
- Peg (PERCUTANEOUS ENDOSCOPIC GASTROSTOMY)
- Peptic Ulcer Surgery
- Port
- Pyloroplasty
- Regenerative Medicine
- Sentinel Node Biopsy
- Small Bowel Biopsy
- Soft Tissue Biopsy
- Splenectomy
- Stem Cell Transplant
- Stomach Surgery
- Syngeneic Transplant
- Ventricular Assist Device
Practice locations
Distance from Change LocationEnter your Location
3800 Reservoir Road Northwest Pasquerilla Healthcare Center 2nd Fl Washington, DC, 20007
202-444-3700Fax 877-680-8192
Insurance
MedStar Medical Group accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Medical Group, please call your insurance company.
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List of insurance plans we accept
- Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
- Aetna Quality Point of Service (POS)
- Aetna Student Health Insurance
- Aetna Medicare Advantage HMO & PPO Plans
- CFBCBS BlueChoice HMO
- CFBCBS Blue Choice Opt Out Plus Open Access (POS)
- CFBCBS Maryland Point of Service Plan (MPOS)
- CFBCBS Maryland Indemnity or PPO
- CFBCBS (NCA) Indemnity
- CIGNA HMO & Network (HMO)
- CIGNA POS/Network POS
- Great-West Healthcare POS/CIGNA
- CIGNA Indemnity
- Coventry Health Care of Virginia
- Coventry of Delaware HMO/PPO
- First Health PPO
- FIRST HEALTH
- Tricare Prime
- Tricare for Life (Medicare Supplemental Plan)
- MedStar Family Choice - Maryland Health Choice
- MedStar Select (MedStar Associates' Plan)
- United Healthcare Select HMO - EPO/NPP
- United Healthcare Select Plus (POS)
- United Healthcare Choice Plus
- United Student Resources
- M.D. IPA (HMO)
- M.D. IPA Preferred (POS)
- Optimum Choice Preferred (POS) & OCI Direct (HMO)
- Mamsi Life & Health (Indem./PPO)
- Aetna Worker's Compensation Network
- Coventry Health Care National Network PPO
- United Healthcare Choice
- CIGNA HMO Open Access (OA)
- Network OA
- POS OA & OA Plus
- CIGNA EPO
- PPO and PPO Plus
- Choice Fund PPO
- CFBSBC Blue Preferred PPO
- HealthyBlue PPO
- CFBCBS Blue Choice Opt Out Open Access
- BlueChoice Open Access
- Aetna Traditional Choice (PPO)
- Innovation Health: Indemnity
- Aetna Open Choice (PPO)
- Innovation Health: PPO
- Aetna Managed Choice (POS)
- Innovation Health: POS Plus
- Aetna Elect Choice/ Open Access (POS)
- Innovation Health: Open Network Only Plus
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Innovation Health: POS
- Open HMO
- Opoen HMO Option
- Open EPO Plus
- Aetna Managed Choice Open Access (POS)
- Choice POS & Choice POS II
- Innovation Health: Open POS Plus
- Open POS II
- Aetna HMO
- Select HMO/HealthFund/Health Network
- Aetna Innovations: HMO & EPO Plus
- Blue Choice Advantage & Healthy Blue (HMO, POS)"
- CFBCBS EPO
- CFBCBS Federal Employee Program (Std/Basic PPO/Blue Focus)
- Kaiser MD Medicaid MCO
- Kaiser Permanente Flexible Choice POS
- Kaiser Permanente Medicare Plus (Medicare Supplemental Plan)
- Kaiser Permanente Select
- Kaiser Permanente Signature
- Kaiser Permanente Signature-Added Choice
- Kaiser PermanenteSelect-Added Choice
- Kaiser Virginia Premier
- Medicare Fee for Service
- Private Health Care Systems (PHCS) (PPO)
- UHC Community Plan of MD
- United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)"
- UnitedHealthcare and AARP Medicare Complete Plans/ UHC Group Medicare Advantage Plans HMO, POS, PPO"
- UnitedHealthcare Medicare Adv/Special Needs Plans
- Kaiser Permanente Medicare Advantage Signature and Select (aka Senior Advantage)"
Education
Board Certification: American Board of Internal Medicine, Internal Medicine
Board Certification: American Board of Internal Medicine, Nephrology
Fellowship Program: McGaw Medical Center of Northwestern University (2022)
Fellowship Program: University of Chicago Medical Center (2011)
Residency Program: Indiana University School of Medicine (2009)
Medical School: University Saint Joseph School of Medicine (2004)