William Hemsley Merwin, MD

Provider is directly employed by MedStar Health

Conditions and procedures

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