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
- Choice POS II Open Access
- TriWest Healthcare Alliance
- Core Essential (HMO)
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- Cigna True Choice Medicare (PPO)
- Maryland Physicians Care MCO
- TRICARE East Prime
- Kaiser Permanente Medicare Plus
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Veterans Affairs Community Care Network
- Aetna Quality Point of Service (POS)
- CIGNA HMO Open Access
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- First Health PPO
- CareFirst FEP Blue Focus
- Humana Medicare Advantage - PPO
- Anthem BCBS of VA HealthKeepers (HMO)
- Cigna TotalCare (HMO D-SNP)
- CIGNA HMO & Network (HMO)
- Aetna Managed Choice Open Access (POS)
- CIGNA Connect EPO
- Amerigroup DC Alliance
- Aetna Managed Choice (POS)
- Humana Medicare Advantage - HMO Open Access
- CareFirst BlueChoice HMO
- Jai Medical Systems - Maryland Health Choice
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- Aetna Medicare Advantage PFFS Plan
- UHC Passport
- BlueChoice Open Access
- Aetna Better Health of VA
- CIGNA POS/Network POS
- Options PPO Cardiac Global
- MedStar Family Choice DC Healthy Families
- CIGNA EPO
- Anthem BCBS Medi Blue Dual Adv
- Cigna True Choice Plus Medicare (PPO)
- WellPoint Maryland - Maryland Health Choice
- Aetna Advantage 6350PD
- CIGNA SureFit (HMO)
- IH-PPO
- Aetna Classic 5000PD
- Kaiser Permanente Medicare Advantage Signature and Select
- Kaiser Permanente Select
- CareFirst Community Health Plan of MD
- Coventry Health Care National Network PPO
- AmeriHealth Caritas DC Healthy Families
- United Healthcare Choice Plus Cardiac Global
- United Healthcare Choice Plus
- CareFirst Blue Card Program
- Alterwood Advanatge HMO & DSNP Plans
- Coventry of Delaware HMO/PPO
- IH-Indemnity
- Aetna Signature Administrator PPO/TPA
- IH-Open POS Plus
- IH-Open Network Only Plus
- Medicare FFS
- Employee Health Plan
- POS OA
- Aetna Classic 3500
- United Healthcare Choice
- CIGNA PPO
- IH-POS Plus
- Aetna Medicare Advantage HMO & PPO Plans
- Kaiser Permanente Signature
- Kaiser Permanente HMO Plus and DHMO Plus Member
- CIGNA Indemnity
- United Medicare Private Fee-for-Service (PFFS) plans
- Great-West Healthcare POS/CIGNA
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- Advantra Platinum (PPO)
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Uniformed Services Family Health Plan
- United Student Resources
- CIGNA PPO Plus
- IH-POS
- MedStar Family Choice - Maryland Health Choice
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- CareFirst Maryland Point of Service Plan
- CareFirst MedStar Select PPO
- Anthem Federal Employee Program Standard
- Aetna Premier 200PD
- Coventry Health Care of Virginia
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- Johns Hopkins Advantage MD PLUS PPO
- HumanaChoice PPO
- Blue Choice Advantage
- United Healthcare Navigate Cardiac Global
- CareFirst (NCA) Indemnity
- Choice Care Network/HUMANA (PPO)
- Aetna Traditional Choice (PPO)
- HumanaChoice Honor's plan PPO
- Anthem BCBS of VA HealthKeepers Plus
- IH-Open POS II
- Anthem BCBS Medi Blue SNP
- IH-EPO Plus
- Aetna Elect Choice/ Open Access (POS)
- Aetna Advantage 5750
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- UnitedHealthcare and AARP Medicare Complete Plans
- Priority Partners - Maryland Health Choice
- Magellan Complete Care of VA - VA Medicaid MCO
- Cigna Achieve Medicare (HMO C-SNP)
- Police and Fire Clinic
- Humana Gold Plus HMO
- CareFirst Federal Employee Program (Std. & Basic PPO)
- IH-HMO
- United Healthcare Choice Cardiac Global
- Sentara Health
- CareFirst Administrators
- Private Fee-for-Service Plans (PFFS)
- Anthem BCBS Medi Blue Plus
- Aetna Worker's Compensation Network
- United Healthcare Select Plus (POS)
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- Optimum Choice Preferred (POS)
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- Kaiser Permanente Select Cardiac Global
- Healthy Blue (HMO, POS)
- Navigate
- Anthem Federal Employee Program Basic
- HighMark
- Aetna Better Health of MD
- OA Plus
- TRICARE for Life East
- M.D. IPA (HMO)
- Cigna Preferred Medicare (HMO)
- CareFirst Dual Prime HMO-SNP
- AmeriHealth Caritas DC Healthcare Alliance
- AMERIVANTAGE/Amerigroup Community Care
- Health Services for Children with Special Needs
- IH-Open EPO Plus
- IH-Open HMO
- NYC Medicare Advantage Plus
- TRICARE East Select
- Aetna Student Health Insurance
- Select HMO/HealthFund/Health Network
- MultiPlan, Inc
- United Healthcare Community Plan - VA Medicaid MCO
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- United Healthcare Options (PPO)
- Optima Family Care MCO - VA Medicaid MCO
- First Health PPO
- DC/MD SHOP QHP Small Business Plans
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Kaiser Permanente Flexible Choice 3-tier POS
- Medicare Advantage - Advantra Value (PPO)
- Choice Fund PPO
- Aetna Classic 5000
- Erickson Advantage Plans
- Mamsi Life & Health (Indem./PPO)
- CareFirst NASCO
- Johns Hopkins Advantage MD PPO
- Cigna Alliance Medicare (HMO)
- Tricare Reserve Select
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- UnitedHealthcare Individual Exchange Plans
- M.D. IPA Preferred (POS)
- CareFirst Maryland Indemnity or PPO
- Lasso Healthcare - Medicare Medical Savings Account
- Kaiser Permanente Select - Added Choice
- CareFirst EPO
- Beech Street PPO
- Private Health Care Systems (PPO)
- CareFirst Blue Preferred PPO
- Choice POS II
- Aetna VA Exchange
- Network OA
- CareFirst Group Medicare Advantage
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Kaiser Permanente Signature - Added Choice
- Amerigroup DC Healthy Families
- Aetna HMO
- United HealthCare Community Plan - Maryland Health Choice Program
- OCI Direct (HMO)
- Kaiser Maryland Medicaid MCO
- Optimum Choice
- Aetna Advantage 6350
- Medicare Direct
- United Healthcare Select HMO - EPO/NPP
- IH-Network Only Plus
- Aetna Basic
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- CareFirst MedStar PPO
- Choice POS
- HealthyBlue PPO
- CareFirst Blue Choice Opt Out Open Access
- IH-Open HMO Option
- Aetna Open Choice (PPO)
- Geisinger Medicare Advantage
- Johns Hopkins Advantage MD HMO
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- MedStar Family Choice DC Healthcare Alliance
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)