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
- 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
- Gestational Edema
- Hypertension
- Kidney Blockage
- Kidney Injury
- Kidney Stones
- Nephrotic Syndrome
- Obstructive And Reflux Uropathy
- Proteinuria
- Pyelonephritis
- Renal Insufficiency
- Transplanted Kidney Failure
- Type 2 Diabetes Mellitus
Procedures I perform
- Acute Kidney Injury Treatment
- Blood Urea Nitrogen (BUN) Test
- Cardiorenal Syndrome Treatment
- Continuous Veno-Venous Hemofiltration
- Creatinine Clearance Test
- Dialysis
- End Stage Renal Disease Treatment
- Excess Water Removal
- Fibrillary Glomerulonephritis Treatment
- Fluid Overload Management
- Hemoperfusion For Toxin Removal
- Hypertension Treatment
- Kidney Disease Treatment
- Kidney Function Test
- Kidney Pancreas Transplant Evaluation
- Laparoscopic Kidney Biopsy
- Limited Retroperitoneal Ultrasound
- Magnesium Imbalance Treatment
- Nephrotic Syndrome Treatment
- Pancreatic Disease Management
- Phosphorus Management
- Potassium Management
- Renal Biopsy
- Renal Failure Treatment
- Renal Transplant
- Sodium Management
- Thrombocytapheresis
- Transplant Glomerulopathy Treatment
- Urinary Filtration Performance
- Vascular Access Creation
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
- Aetna VA Exchange
- CareFirst FEP Blue Focus
- HumanaChoice Honor's plan PPO
- Cigna Preferred Medicare (HMO)
- United Healthcare Select HMO - EPO/NPP
- Optima Family Care MCO - VA Medicaid MCO
- CIGNA Connect EPO
- Network OA
- Kaiser Permanente Medicare Plus
- Choice Care Network/HUMANA (PPO)
- Anthem BCBS of VA HealthKeepers (HMO)
- Tricare Reserve Select
- Aetna Advantage 5750
- IH-Open HMO
- Aetna Student Health Insurance
- CIGNA HMO & Network (HMO)
- United HealthCare Community Plan - Maryland Health Choice Program
- United Healthcare Community Plan - VA Medicaid MCO
- Johns Hopkins Advantage MD PLUS PPO
- United Healthcare Navigate Cardiac Global
- Beech Street PPO
- Choice POS II Open Access
- UnitedHealthcare and AARP Medicare Complete Plans
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- CareFirst Administrators
- IH-Open Network Only Plus
- Coventry of Delaware HMO/PPO
- Medicare FFS
- Anthem BCBS of VA HealthKeepers Plus
- Kaiser Permanente Signature
- M.D. IPA Preferred (POS)
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- M.D. IPA (HMO)
- Veterans Affairs Community Care Network
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- CIGNA HMO Open Access
- CIGNA Indemnity
- United Medicare Private Fee-for-Service (PFFS) plans
- NYC Medicare Advantage Plus
- Cigna True Choice Medicare (PPO)
- First Health PPO
- First Health PPO
- IH-Open HMO Option
- CareFirst Maryland Point of Service Plan
- Great-West Healthcare POS/CIGNA
- Aetna Managed Choice (POS)
- Aetna Traditional Choice (PPO)
- Police and Fire Clinic
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- Maryland Physicians Care MCO
- MedStar Family Choice DC Healthcare Alliance
- Employee Health Plan
- Uniformed Services Family Health Plan
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- OCI Direct (HMO)
- AmeriHealth Caritas DC Healthcare Alliance
- IH-PPO
- Alterwood Advanatge HMO & DSNP Plans
- CareFirst Blue Preferred PPO
- CareFirst Community Health Plan of MD
- Magellan Complete Care of VA - VA Medicaid MCO
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- BlueChoice Open Access
- CIGNA PPO Plus
- UHC Passport
- CareFirst EPO
- United Healthcare Select Plus (POS)
- Johns Hopkins Advantage MD HMO
- Kaiser Permanente Flexible Choice 3-tier POS
- Aetna Managed Choice Open Access (POS)
- CIGNA EPO
- Aetna Advantage 6350
- Aetna Better Health of MD
- Medicare Direct
- Cigna Achieve Medicare (HMO C-SNP)
- TriWest Healthcare Alliance
- United Student Resources
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Aetna Medicare Advantage HMO & PPO Plans
- TRICARE East Select
- Private Health Care Systems (PPO)
- CIGNA SureFit (HMO)
- Priority Partners - Maryland Health Choice
- Aetna Signature Administrator PPO/TPA
- POS OA
- CIGNA PPO
- Aetna HMO
- Aetna Open Choice (PPO)
- Anthem Federal Employee Program Standard
- UnitedHealthcare Individual Exchange Plans
- IH-POS
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- AMERIVANTAGE/Amerigroup Community Care
- CareFirst NASCO
- CareFirst BlueChoice HMO
- Navigate
- Select HMO/HealthFund/Health Network
- Cigna TotalCare (HMO D-SNP)
- Optimum Choice Preferred (POS)
- Anthem BCBS Medi Blue Plus
- CareFirst MedStar PPO
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- CareFirst Dual Prime HMO-SNP
- Options PPO Cardiac Global
- HealthyBlue PPO
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- CareFirst Maryland Indemnity or PPO
- CareFirst Blue Choice Opt Out Open Access
- Kaiser Permanente HMO Plus and DHMO Plus Member
- Choice POS
- IH-Indemnity
- Kaiser Permanente Medicare Advantage Signature and Select
- Coventry Health Care National Network PPO
- United Healthcare Choice Plus
- Lasso Healthcare - Medicare Medical Savings Account
- WellPoint Maryland - Maryland Health Choice
- CareFirst MedStar Select PPO
- Medicare Advantage - Advantra Value (PPO)
- Kaiser Permanente Select - Added Choice
- Amerigroup DC Healthy Families
- Humana Gold Plus HMO
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Aetna Worker's Compensation Network
- Aetna Classic 3500
- Coventry Health Care of Virginia
- OA Plus
- Kaiser Permanente Select Cardiac Global
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- IH-Open EPO Plus
- Kaiser Permanente Select
- IH-EPO Plus
- Choice POS II
- IH-Open POS Plus
- IH-Open POS II
- United Healthcare Choice Cardiac Global
- IH-POS Plus
- CIGNA POS/Network POS
- MedStar Family Choice DC Healthy Families
- Aetna Basic
- Anthem Federal Employee Program Basic
- CareFirst Group Medicare Advantage
- Johns Hopkins Advantage MD PPO
- Kaiser Maryland Medicaid MCO
- Aetna Classic 5000
- DC/MD SHOP QHP Small Business Plans
- Anthem BCBS Medi Blue SNP
- Choice Fund PPO
- United Healthcare Options (PPO)
- MedStar Family Choice - Maryland Health Choice
- Blue Choice Advantage
- Aetna Premier 200PD
- CareFirst (NCA) Indemnity
- Aetna Advantage 6350PD
- CareFirst Federal Employee Program (Std. & Basic PPO)
- Health Services for Children with Special Needs
- Sentara Health
- Private Fee-for-Service Plans (PFFS)
- Core Essential (HMO)
- MultiPlan, Inc
- Healthy Blue (HMO, POS)
- Cigna Alliance Medicare (HMO)
- Aetna Medicare Advantage PFFS Plan
- Aetna Quality Point of Service (POS)
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Humana Medicare Advantage - HMO Open Access
- United Healthcare Choice
- Anthem BCBS Medi Blue Dual Adv
- AmeriHealth Caritas DC Healthy Families
- TRICARE East Prime
- Kaiser Permanente Signature - Added Choice
- Aetna Better Health of VA
- Mamsi Life & Health (Indem./PPO)
- HighMark
- Advantra Platinum (PPO)
- Optimum Choice
- IH-HMO
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- HumanaChoice PPO
- IH-Network Only Plus
- TRICARE for Life East
- Humana Medicare Advantage - PPO
- CareFirst Blue Card Program
- Cigna True Choice Plus Medicare (PPO)
- Geisinger Medicare Advantage
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- Jai Medical Systems - Maryland Health Choice
- Aetna Elect Choice/ Open Access (POS)
- United Healthcare Choice Plus Cardiac Global
- Amerigroup DC Alliance
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- Erickson Advantage Plans
- Aetna Classic 5000PD
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)