Keiko Iwahara Greenberg, MD| Nephrology | MedStar Health
Keiko Iwahara Greenberg

Keiko Iwahara Greenberg, MD
Provider is directly employed by MedStar Health

5 out of 5 (322 reviews)

Specialties: Nephrology

Languages: English

877-625-1483

Clinical areas of focus

  • Arterial Pressure Monitoring
  • Blood Urea Nitrogen (BUN) Test
  • Chronic Kidney Disease
  • Creatinine Clearance Test
  • Diabetic Nephropathy
  • Dialysis
  • Endstage Renal Disease
  • Estimated Glomerular Filtration Rate
  • Kidney Function Test
  • Laparoscopic Kidney Biopsy
  • Mesothelioma
  • Nephrotic Syndrome
  • Renal Insufficiency
  • Testicular Ultrasound
  • Transplanted Kidney Failure
  • Urinary Protein Test
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Conditions and procedures

Conditions I treat

  • Abnormal Urine Test Results
  • Chronic Kidney Disease
  • Disorders Of Carbohydrate Metabolism
  • Fibromuscular Dysplasia
  • Gallbladder Disease
  • Gestational Edema
  • Gilbert Syndrome
  • Hyperaldosteronism
  • Hyperparathyroidism
  • Hypertension
  • Kidney Stones
  • Long Term Drug Therapy
  • Lupus Nephritis
  • Membranous Nephropathy
  • Mesothelioma
  • Nephrotic Syndrome
  • Obstructive And Reflux Uropathy
  • Personal History Of Diseases And Conditions
  • Renal Artery Stenosis
  • Renal Insufficiency
  • Systemic Connective Tissue Involvement
  • Transplanted Kidney Failure
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Procedures I perform

  • Adrenal Hormone Level Testing
  • Angiogram
  • Arterial Pressure Monitoring
  • Blood Urea Nitrogen (BUN) Test
  • Celiac Plexus Block
  • Creatinine Clearance Test
  • Dialysis
  • Immunoglobulin Administration
  • Intra-Aortic Balloon Pump Placement
  • Kidney Function Test
  • Kidney Pancreas Transplant Evaluation
  • Neobladder Creation
  • Nephrotic Syndrome Treatment
  • Pancreatic Disease Management
  • Popliteal Artery Entrapment Syndrome Treatment
  • Renal Artery Stenting
  • Renal Biopsy
  • Testicular Ultrasound
  • Urinary Filtration Performance
  • Urinary Protein Test
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Practice locations

Distance from Change LocationEnter your Location

3800 Reservoir Rd NW
Pasquerilla Healthcare Center
Washington, DC, 20007

301-774-8956

Fax 410-354-4565

Get Directions

miles away

Fax 410-354-4565

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.

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

Education

Fellowship: Johns Hopkins University School of Medicine (2015)

Internship: Johns Hopkins University School of Medicine (2010)

Medical School: University of Virginia School of Medicine (2009)

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    5
  • Extent to which the care provider listened to you

    5
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    5
  • Provider included you in decisions

    5
  • Concern the care provider showed for your questions or worries

    5
  • Likelihood of recommending this care provider to others

    4.9
  • Jul 17, 2025

    Dr. Greenberg is very attentive and answers all my questions and concerns with the utmost care. She care to my condition and also to me as a person. She also is very responsive to any of my portal messages and responds in a timely manner to my questions either via portal , or calls me especially when she understands that I an anxious about my situation.

  • Jul 1, 2025

    She is amazing. Happy she is along for journey.

  • Jun 17, 2025

    Excellent!