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