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
- Acute Kidney Injury
- Cardiorenal Syndrome
- Chronic Kidney Disease (CKD)
- Diabetic Nephropathy
- End Stage Renal Disease
- Glomerulonephritis
- Hypertension
- Kidney Disease
- Medical Management Of Chronic Kidney Disease (CKD)
- Nephrotic Syndrome
Conditions and procedures
Conditions I treat
- Acute Interstitial Nephritis
- Acute Kidney Injury
- Acute Tubular Necrosis
- Alport Syndrome
- Amyloid Nephropathy
- Anti Glomerular Basement Membrane Disease
- Anti Neutrophil Cytoplasmic Antibodies
- Azotemia
- Bartter Syndrome
- BK Virus Nephropathy
- Cardiorenal Syndrome
- Chronic Kidney Disease (CKD)
- Chronic Kidney Disease (CKD) After Renal Transplant
- Complications Of Immune Suppression
- Contrast Induced Nephropathy
- Cryoglobulinemia
- Crystalluria
- Diabetes Insipidus
- Diabetic Nephropathy
- Dialysis Related Amyloidosis
- Edema
- Elevated Creatinine
- End Stage Renal Disease
- Ethylene Glycol Poisoning
- Familial Renal Amyloidosis
- Fibromuscular Dysplasia
- Focal Segmental Glomerulosclerosis
- Glomerular Diseases
- Glomerulonephritis
- Glomerulonephropathy
- Glucocorticoid Remediable Hypertension
- Gouty Nephropathy
- Granulomatosis With Polyangiitis
- Hematuria
- Hemolytic Uremic Syndrome
- Hep C Related Renal Disease
- Hepatorenal Syndrome
- HIV Nephropathy
- Hydronephrosis
- Hypercalcemia
- Hypercalciuria
- Hyperkalemia
- Hypermagnesemia
- Hypernatremia
- Hyperoxaluria
- Hyperparathyroidism
- Hyperphosphatemia
- Hypertension
- Hypertrophy Of Kidney
- Hyperuricemia
- Hypocalcemia
- Hypokalemia
- Hypomagnesemia
- Hyponatremia
- Hypophosphatemia
- Iga Nephropathy
- Iga Vasculitis
- Inappropriate Antidiuretic Hormone Secretion
- Ischemic Nephropathy
- Kidney Disease
- Kidney Malformation
- Kidney Problem
- Lead Nephropathy
- Liddle Syndrome
- Light Chain Disorders
- Lithium Nephropathy
- Lithium Poisoning
- Lupus Nephritis
- Malignant Hypertension
- Maternal Iga Nephropathy
- Medullary Sponge Kidney
- Membranous Nephropathy
- Metabolic Acidosis
- Metabolic Alkalosis
- Methanol Poisoning
- Microalbuminuria
- Microscopic Hematuria
- Microscopic Polyangiitis
- Minimal Change Kidney Disease
- Nephritic Syndrome
- Nephritis
- Nephrocalcinosis
- Nephrogenic Systemic Fibrosis
- Nephropathy
- Nephrosclerosis
- Nephrotic Syndrome
- Nephrotoxicity
- Obesity Related Glomerulopathy
- Pauci Immune Glopmerulonephritis
- Pheochromocytoma
- Polycystic Kidney Disease
- Postural Proteinuria
- Proteinuria
- Pseudohypoaldosteronism Type 1
- Pyelonephritis
- Radiation Nephropathy
- Reflux Nephropathy
- Renal Agenesis And Dysgenesis
- Renal Anomalies
- Renal Arteriovenous Malformation (AVM)
- Renal Artery Stenosis
- Renal Cortical Necrosis
- Renal Cysts
- Renal Failure
- Renal Hypoplasia
- Renal Insufficiency
- Renal Manifestations Of Sickle Cell Disease
- Renal Osteodystrophy
- Renal Tubular Acidosis
- Renovascular Hypertension
- Retroperitoneal Fibrosis
- Rhabdomyolysis
- Salt Balance Disorders
- Secondary Hyperaldosteronism
- Small Kidney
- Solitary Kidney
- Thin Basement Membrane Disease
- Tubulointerstitial Nephritis
- Uncontrolled Hypertension
- Uremia
- Uremic Encephalopathy
Procedures I perform
- Conservative Management Of Chronic Kidney Disease (CKD)
- Continuous Renal Replacement Therapy Crrt
- Dialysis Prevention
- Medical Management Of Chronic Kidney Disease (CKD)
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
- Federal Employee Program (Std/Basic PPO/Blue Focus)
- United Nursing Home Plan (C-SNP
- United Core Essential (HMO)
- Carefirst BlueChoice HMO
- Aetna HealthFund/Health Network Option OA
- Virginia Premier
- AmeriHealth Caritas DC Healthcare Alliance
- Amerigroup DC Alliance
- Carefirst EPO
- Innovation Health: HMO & EPO Plus
- Veterans Affairs Community Care Network
- D-SNP)
- Cigna EPO
- United AARP Medicare Complete
- Aetna Select HMO/HealthFund/Health Network
- UnitedHealthcare Individual Exchange Plans
- United Choice Plus
- Aetna HMO
- United Community Plan - Maryland Health Choice Program
- WellPoint Maryland - Maryland Health Choice
- Innovation Health: Open Network Only Plus
- Uniformed Services Family Health Plan (USFHP)
- United Erickson Advantage Plans
- Tricare for Life East
- Aetna Elect Choice/ Open Access (POS)
- Private Health Care Systems (PHCS) (PPO)
- AmeriHealth Caritas DC Healthy Families
- United Mamsi Life & Health
- Innovation Health: Network Only Plus
- Priority Partners - Maryland Health Choice
- United Student Resources
- United Group Medicare Advantage Plans
- Tricare Reserve Select
- Choice Care Network/HUMANA (PPO)
- I-SNP
- CareFirst Maryland Indemnity or PPO
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Police and Fire Clinic
- Cigna Choice Fund PPO
- Veterans Affairs Community Care Network (VA CCN)
- Cigna TotalCare (HMO D-SNP)
- United Optimum Choice Preferred (POS) & OCI Direct (HMO)
- Aetna Open Choice (PPO)
- Cigna Alliance Medicare (HMO) |
- CareFirst (NCA) Indemnity
- CareFirst Group Medicare Advantage
- CareFirst MedStar Select PPO
- United Optimum Choice
- MedStar Family Choice DC Healthy Families
- Medicaid - District of Columbia
- Coventry Health Care National Network PPO
- Innovation Health: PPO
- CareFirst BC/BS Advantage Core/Enhanced
- Carefirst Blue Preferred PPO
- Carefirst BlueChoice Opt Out Open Access
- MedStar Family Choice DC Healthcare Alliance
- HumanaChoice PPO
- Carefirst BlueChoice Open Access
- United Medicare Advantage DSNP District of Columbia
- Medicaid - Maryland
- Aetna HMO-Open Access/Select OA
- United Choice
- WellPoint Maryland
- Amerigroup DC Healthy Families
- MedStar Family Choice - Maryland Health Choice
- Cigna Achieve Medicare (HMO C-SNP)
- Maryland Point of Service Plan (MPOS)
- United Navigate
- CareFirst Blue Card Program (Out-of-area BCBS plans)
- United MD IPA Preferred (POS)
- Traditional Medicare Fee for Service
- HumanaChoice Honor’s plan PPO
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- CareFirst Administrators
- Aetna Medicare Advantage HMO & PPO Plans
- Aetna Signature Administrator PPO/TPA
- Tricare East Select
- United GEHA (for all other states) Compass Rose
- United MD IPA (HMO)
- Health Services for Children with Special Needs (HSCSN)
- Innovation Health: Open POS Plus
- Kaiser Permanente Signature-Added Choice
- Great-West Healthcare POS/CIGNA
- Cigna Preferred Medicare
- Coventry Health Care of Virginia
- Innovation Health: Open POS II
- Tricare East Prime
- Kaiser Signature
- Cigna True Choice Plus Medicare (PPO)
- Aetna Managed Choice Open Access (POS)
- Kaiser HMO Plus and DHMO Plus Member
- Cigna True Choice Medicare (PPO)
- Cigna HMO & Network (HMO)
- United Select HMO - EPO/NPP
- United Select Plus (POS)
- Kaiser Select-Added Choice
- Cigna POS/Network POS
- Aetna Choice POS & Choice POS II
- HealthyBlue PPO
- Medicaid - Virginia
- CareFirst NASCO
- Kaiser Select
- Cigna Indemnity
- Innovation Health: POS Plus
- Coventry of Delaware HMO/PPO
- Carefirst Healthy Blue (HMO/POS)
- United Options (PPO) (includes Empire PPO)
- CareFirst MedStar PPO
- Carefirst BlueChoice Opt Out Plus Open Access (POS)
- Cigna POS Open Access & Open Access Plus
- Aetna Traditional Choice (PPO)
- Kaiser Medicare Plus
- United Golden Rule
- First Health PPO
- Aetna Managed Choice (POS)
- Innovation Health: Indemnity
- Kaiser Medicare Advantage Signature and Select
- Cigna Network Open Access
- Innovation Health: POS
- Aetna Quality Point of Service (POS)
- Kaiser Flexible Choice
- Cigna HMO Open Access
- Aetna Student Health Insurance
- Cigna PPO and PPO Plus
- Aetna Open HMO/Open HMO Option/Open EPO Plus
- Kaiser Maryland Medicaid MCO
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)