About me
Lonnie Thach, MD, is a board-certified nephrologist at MedStar Washington Hospital Center and MedStar Georgetown University Hospital. Dr. Thach treats patients with kidney diseases and dysfunction, including chronic kidney disease, acute kidney injury, hypertension, and glomerulonephritis. He holds professional memberships with the American Society of Nephrology, the National Kidney Foundation, and the American College of Physicians.
Dr. Thach takes a holistic and patient-guided approach to medical management. After thoroughly explaining and reviewing his patients’ lab results, he explores all available options, including lifestyle changes like exercise and diet, medication, and dialysis modalities if needed. At the end of the day, he wants to ensure that his patients are fully aligned and comfortable with the prescribed treatment plan.
His clinical interests include urine microscopy, hypertension, and medical education. Committed to staying abreast of new research and advances in his field, he is currently interested in up-and-coming treatments and drug discoveries for glomerulonephritis and the role of multi-target therapy in managing chronic kidney disease.
Dr. Thach obtained a Bachelor of Science in Biology from the University of Texas and his Masters in Biology from Southern Illinois University. Fascinated by the basic sciences and inspired by the doctor-patient relationship, he went on to obtain his Doctor of Medicine degree. After completing his residency, he transferred to McGaw Medical Center of Northwestern University for his fellowship training.
Dr. Thach is conversationally fluent in Khmer. In his free time, he loves playing racquet sports, exploring the outdoors, and trying all the different foods that DC has to offer.
Philosophy of Care
“Being a good doctor means always doing what is best for my patient. I want to understand my patients’ goals, respect their desires for how far we go with treatments, and create a feasible plan that fits their lifestyle. My recommendations will be holistic, evidence-based, and patient-focused. Above all, I want my patients to feel heard and that their needs and questions were addressed during their appointment.”
Clinical areas of focus
- Chronic Kidney Disease
- Diabetic Nephropathy
- Dialysis
- End Stage Renal Disease Treatment
- Endstage Renal Disease
- Kidney Disease Treatment
- Laparoscopic Kidney Biopsy
- Mesothelioma
- Nephrotic Syndrome
- Nephrotic Syndrome Treatment
- Transplanted Kidney Failure
Conditions and procedures
Conditions I treat
- Anemia Of Chronic Disease
- Cardiorenal Syndrome
- Chronic Kidney Disease
- Complications Of Transplanted Organs And Tissue
- Diabetic Nephropathy
- Endstage Renal Disease
- Fibromuscular Dysplasia
- Gallbladder Disease
- Gestational Edema
- Hypertension
- Kidney Blockage
- Kidney Injury
- Kidney Stones
- Mesothelioma
- Nephrotic Syndrome
- Obstructive And Reflux Uropathy
- Proteinuria
- Pyelonephritis
- Renal Insufficiency
- Transplanted Kidney Failure
- Type 2 Diabetes Mellitus
Procedures I perform
- Acute Kidney Injury Treatment
- Anemia Management
- Anticoagulation Therapy
- Blood Urea Nitrogen (BUN) Test
- Cardiorenal Syndrome Treatment
- Celiac Plexus Block
- Continuous Veno-Venous Hemofiltration
- Creatinine Clearance Test
- Dialysis
- End Stage Renal Disease Treatment
- Excess Water Removal
- Factor Vii Infusion
- Fibrillary Glomerulonephritis Treatment
- Fluid Overload Management
- Hemoperfusion For Toxin Removal
- Hypertension Treatment
- Internal Jugular Central Line Placement
- Intra-Aortic Balloon Pump Placement
- Kidney Disease Treatment
- Kidney Function Test
- Kidney Pancreas Transplant Evaluation
- Laparoscopic Kidney Biopsy
- Limited Retroperitoneal Ultrasound
- Magnesium Imbalance Treatment
- Mesenteric Angiography
- Neobladder Creation
- Nephrotic Syndrome Treatment
- Nutrition Counseling
- Pain Medication Management
- Pancreatic Disease Management
- Phosphorus Management
- Popliteal Artery Entrapment Syndrome Treatment
- Potassium Management
- Renal Artery Stenosis Treatment
- Renal Biopsy
- Renal Failure Treatment
- Renal Transplant
- Sodium Management
- Testicular Ultrasound
- Thrombocytapheresis
- Total Parenteral Nutrition
- Transitional Cell Carcinoma Treatment
- Transplant Glomerulopathy Treatment
- Urea Kinetic Modeling
- Urinary Filtration Performance
- Vascular Access Creation
- Vitamin D Management
Insurance
MedStar Health accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Health, please call your insurance company.
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List of insurance plans we accept
- IH-Open POS II
- OA Plus
- AmeriHealth Caritas DC Healthy Families
- CareFirst Blue Preferred PPO
- MedStar Family Choice DC Healthy Families
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Aetna Quality Point of Service (POS)
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- MultiPlan, Inc
- CareFirst Maryland Indemnity or PPO
- CIGNA PPO Plus
- Aetna Classic 3500
- CareFirst MedStar Select PPO
- Sentara Health
- IH-Open HMO Option
- Anthem BCBS Medi Blue Plus
- United Healthcare Community Plan - VA Medicaid MCO
- United Healthcare Choice Cardiac Global
- IH-Open EPO Plus
- CareFirst EPO
- Choice Care Network/HUMANA (PPO)
- CareFirst Blue Card Program
- POS OA
- Aetna Classic 5000PD
- Anthem Federal Employee Program Standard
- Aetna Open Choice (PPO)
- IH-EPO Plus
- Jai Medical Systems - Maryland Health Choice
- Johns Hopkins Advantage MD PLUS PPO
- IH-Open HMO
- Aetna HMO
- Aetna Traditional Choice (PPO)
- Aetna Managed Choice (POS)
- Mamsi Life & Health (Indem./PPO)
- CareFirst Blue Choice Opt Out Open Access
- Employee Health Plan
- Priority Partners - Maryland Health Choice
- CIGNA Connect EPO
- Anthem BCBS Medi Blue SNP
- Cigna TotalCare (HMO D-SNP)
- Tricare Reserve Select
- HighMark
- Aetna Medicare Advantage HMO & PPO Plans
- Kaiser Permanente Select
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- United Healthcare Options (PPO)
- Choice POS
- CIGNA PPO
- Cigna Preferred Medicare (HMO)
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- Kaiser Permanente Select - Added Choice
- Erickson Advantage Plans
- Aetna Better Health of MD
- Aetna VA Exchange
- Mamsi Life & Health (Indem./PPO)
- CIGNA POS/Network POS
- NYC Medicare Advantage Plus
- AmeriHealth Caritas DC Healthcare Alliance
- OCI Direct (HMO)
- Optima Family Care MCO - VA Medicaid MCO
- CareFirst FEP Blue Focus
- Kaiser Permanente Select Cardiac Global
- Humana Medicare Advantage - PPO
- Aetna Medicare Advantage PFFS Plan
- CIGNA HMO Open Access
- IH-Open POS Plus
- Healthy Blue (HMO, POS)
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Aetna Premier 200PD
- TRICARE East Prime
- Aetna Advantage 6350
- Core Essential (HMO)
- United Student Resources
- M.D. IPA Preferred (POS)
- Navigate
- Anthem BCBS Medi Blue Dual Adv
- Cigna True Choice Plus Medicare (PPO)
- Optimum Choice Preferred (POS)
- IH-HMO
- HumanaChoice Honor's plan PPO
- Medicare FFS
- UnitedHealthcare and AARP Medicare Complete Plans
- CareFirst BlueChoice HMO
- UnitedHealthcare Individual Exchange Plans
- Advantra Platinum (PPO)
- Amerigroup DC Alliance
- Lasso Healthcare - Medicare Medical Savings Account
- MedStar Family Choice DC Healthcare Alliance
- United Medicare Private Fee-for-Service (PFFS) plans
- Coventry Health Care of Virginia
- Kaiser Permanente Medicare Advantage Signature and Select
- United Healthcare Navigate Cardiac Global
- CareFirst NASCO
- Aetna Classic 5000
- CareFirst Dual Prime HMO-SNP
- Kaiser Permanente HMO Plus and DHMO Plus Member
- CareFirst Administrators
- United Healthcare Choice
- UHC Passport
- CareFirst Community Health Plan of MD
- CareFirst Federal Employee Program (Std. & Basic PPO)
- Humana Gold Plus HMO
- Aetna Signature Administrator PPO/TPA
- Choice Fund PPO
- Johns Hopkins Advantage MD HMO
- UnitedHealthcare Individual Exchange Plans
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- United Healthcare Choice Plus Cardiac Global
- Aetna Advantage 5750
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- Aetna Advantage 6350PD
- Aetna Better Health of VA
- Private Health Care Systems (PPO)
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- Humana Medicare Advantage - HMO Open Access
- TRICARE for Life East
- IH-PPO
- Kaiser Permanente Flexible Choice POS Cardiac Global
- AMERIVANTAGE/Amerigroup Community Care
- First Health PPO
- Optimum Choice
- Options PPO Cardiac Global
- MedStar Family Choice - Maryland Health Choice
- Aetna Basic
- Kaiser Permanente Medicare Plus
- TriWest Healthcare Alliance
- Cigna Achieve Medicare (HMO C-SNP)
- M.D. IPA (HMO)
- Anthem BCBS of VA HealthKeepers (HMO)
- IH-Network Only Plus
- CIGNA Indemnity
- Network OA
- Uniformed Services Family Health Plan
- Choice POS II
- Johns Hopkins Advantage MD PPO
- Alterwood Advanatge HMO & DSNP Plans
- Police and Fire Clinic
- HealthyBlue PPO
- Aetna Managed Choice Open Access (POS)
- TRICARE East Select
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- Aetna Elect Choice/ Open Access (POS)
- CIGNA EPO
- Health Services for Children with Special Needs
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Anthem Federal Employee Program Basic
- Amerigroup DC Healthy Families
- United Healthcare Select Plus (POS)
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- Great-West Healthcare POS/CIGNA
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Magellan Complete Care of VA - VA Medicaid MCO
- DC/MD SHOP QHP Small Business Plans
- Choice POS II Open Access
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- Select HMO/HealthFund/Health Network
- Geisinger Medicare Advantage
- Blue Choice Advantage
- Aetna Worker's Compensation Network
- CIGNA SureFit (HMO)
- Veterans Affairs Community Care Network
- CIGNA HMO & Network (HMO)
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- IH-Open Network Only Plus
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- Kaiser Permanente Flexible Choice 3-tier POS
- Medicare Direct
- UnitedHealthcare Medicare Adv. Special Needs Plans
- HumanaChoice PPO
- Aetna Student Health Insurance
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- IH-POS
- CareFirst (NCA) Indemnity
- Medicare Advantage - Advantra Value (PPO)
- Beech Street PPO
- Cigna Alliance Medicare (HMO)
- United HealthCare Community Plan - Maryland Health Choice Program
- Private Fee-for-Service Plans (PFFS)
- MedStar Family Choice DC Healthcare Alliance
- Maryland Physicians Care MCO
- IH-Indemnity
- Cigna True Choice Medicare (PPO)
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- Coventry Health Care National Network PPO
- Kaiser Maryland Medicaid MCO
- Kaiser Permanente Signature
- CareFirst Group Medicare Advantage
- United Healthcare Choice Plus
- WellPoint Maryland - Maryland Health Choice
- CareFirst Maryland Point of Service Plan
- CareFirst MedStar PPO
- MedStar Family Choice - Maryland Health Choice
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- IH-POS Plus
- Anthem BCBS of VA HealthKeepers Plus
- United Healthcare Select HMO - EPO/NPP
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Coventry of Delaware HMO/PPO
- First Health PPO
- BlueChoice Open Access
- Kaiser Permanente Signature - Added Choice
Education
Board Certification: American Board of Internal Medicine, Internal Medicine
Fellowship: McGaw Medical Center of Northwestern University (2024)
Residency: St. Louis University School of Medicine (2022)
Medical School: Southern Illinois University (2019)