Andrew Benjamin Stemer, MD| Neurology, Vascular Neurology | MedStar Health
Andrew Benjamin Stemer

Andrew Benjamin Stemer, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (364 reviews)

Specialties: Neurology, Vascular Neurology

Languages: English

410-354-5956

About me

As a dual-trained physician with sub-specialty fellowships in Vascular Neurology and Neuro Interventional Radiology, Dr. Stemer offers patients with cerebrovascular disease complete continuity of care from the emergency room to the angiography suite, through the Neuro Intensive Care Unit, and follow-up clinic appointments. He treats patients of all ages, from pediatric to the elderly, at both MedStar Georgetown University Hospital where he serves as Director of Stroke Neurology and at MedStar Washington Hospital Center.

Dr. Stemer graduated from Rush Medical School in Chicago, IL and also served his internship and residency at Rush University Medical Center followed by a fellowships in Vascular Neurology at University of California San Diego Medical Center and Endovascular Surgical Neuroradiology at MedStar Washington Hospital Center in Washington, DC.

Currently an Assistant Professor of Neurology and an Assistant Professor of Radiology at MedStar Georgetown University Hospital, Dr. Stemer has won recognition and awards for his teaching. An active researcher, he is also widely published and a frequent lecturer.

Philosophy of Care

My goal is to practice medicine in a compassionate manner, tailored to each patient's specific circumstances. My commitment is to provide the highest level of evidence-based clinical care to cerebrovascular patients including opportunities to participate in ongoing research studies. And, as a physician at a tertiary care academic center, I actively participate in the education and training we offer to medical students, residents and fellows.

Conditions Treated

  • Stroke
  • Brain aneurysm
  • Brain arterial venous malformation
  • Intercranial aphaschlerosis
  • Carotid stenosis
  • Moyamoya disease

Procedures Performed

  • Cerebral angiography,
  • Mechanical thrombectomy for acute ischemic stroke
  • Brain aneurysm treatment (coils, stent, flow diverters)
  • Brain arteriovenous malformation/fistula embolization (Onyx, nBCA)
  • Head and neck tumor embolization (Onyx, PolyVinyl Alcohol particles)
  • Vasospasm treatment (intracranial angioplasty, intra-arterial calcium channel blockers)
  • Intracranial angioplasty and stenting
  • Carotid artery angioplasty and stenting

Clinical areas of focus

  • Epilepsy
  • Migraine
  • Multiple Sclerosis
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Conditions and procedures

Conditions I treat

  • Alzheimer's Disease
  • Amyotrophic Lateral Sclerosis
  • Aneurysm
  • Aphagia And Dysphagia
  • Arteriovenous Malformation (AVM)
  • Benign Neoplasm Of Brain And Central Nervous System
  • Binocular Movement Disorders
  • Brain Aneurysm
  • Brain Avm
  • Brain Disorders
  • Cerebral Amyloid Angiopathy
  • Cerebrovascular Accident (CVA)
  • Cerebrovascular Diseases
  • Cognitive Function Disorders
  • Confusion
  • Convulsions
  • Cranial Nerve Disorder
  • Degenerative Diseases Of Nervous System
  • Dementia
  • Demyelinating Diseases Of Central Nervous System
  • Epilepsy
  • Epilepsy And Seizures
  • Facial Nerve Disorder
  • Falls And Gait Disorders
  • Gait And Balance Problems
  • Head Injury
  • Headache
  • Hydrocephalus
  • Intracerebral Hemorrhage
  • Ischemic Stroke
  • Lack Of Coordination
  • Migraine
  • Migraine With Aura
  • Moyamoya
  • Multiple Sclerosis
  • Myopathies
  • Nervous And Musculoskeletal Symptoms
  • Nervous System Disorders
  • Neurodegeneration
  • Numbness
  • Paralysis
  • Paralytic Syndrome
  • Parkinson's Disease
  • Secondary Parkinsonism
  • Seizure Disorders
  • Spinal Muscular Atrophy And Related Syndromes
  • Transient Cerebral Ischemic Attacks
  • Transient Ischemic Attack (TIA)
  • Unsteady Walking
  • Vestibular Disorders
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Procedures I perform

  • Balance And Gait Disorders Treatment
  • Cervicogenic Dizziness Treatment
  • Cognitive Stimulation Therapy
  • Deep Brain Stimulation
  • Electroencephalogram
  • Electroencephalogram Review
  • Electroencephalogram Setup And Takedown
  • Neuropsychological Testing
  • Numbness Treatment
  • Parkinson's Disease
  • Stroke Management
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Practice locations

Distance from Change LocationEnter your Location

3800 Reservoir Rd NW
Pasquerilla Healthcare Center 7th Fl Dept Neurology
Washington, DC, 20007

202-444-8659

Fax 410-354-5956

Get Directions

miles away

Fax 410-354-5956

110 Irving St NW
Washington, DC, 20010

202-444-8659

Fax 410-354-5956

Get Directions

miles away

Fax 410-354-5956

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

Videos

Education

Board Certification: American Board of Psychiatry and Neurology, Psychiatry and Neurology

Fellowship: MedStar Washington Hospital Center (2013)

Fellowship: University of California San Diego-Neurology (2010)

Residency: Rush University Medical Center (2009)

Internship: Rush University Medical Center (2006)

Medical School: Rush Medical College at Rush University (2005)

Awards

  • Top Instructor, Department of Neurology MedStar Georgetown University Hospital
  • Resident Teacher of the Year, Rush University Medical Center

News and publications

  • Stemer AB, Bank WO, Bell RS, Liu AH, Armonda RA. "Penumbra 5MAX-ACE: Initial Experience and Cost Analysis." Platform Presentation. Anatomy-Biology-Clinical Correlations (ABC) Working Group in Interventional Neuroradiology (WIN) Seminar. Val d'Isere, France. January 2014.
  • Bank WO, Stemer AB, Armonda RA, Bell RS. Intermittent balloon occlusion to favor nidal penetration during embolization of arteriovenous malformations: a technique modification. J Neurointerv Surg. 2013 Aug 13.
  • Huisa BN, Stemer AB, Walker MG, Rapp K, Meyer BC, Zivin JA. Transcranial laser therapy for acute ischemic stroke: a pooled analysis of NEST-1 and NEST-2. Int J Stroke. 2013 Jul;8(5):315-20
  • Stemer AB, Bank WO, Armonda RA, Liu AH, Herzig DW, Bell RS. Acute embolization of ruptured brain arteriovenous malformations. J Neurointerv Surg. 2013 May 1;5(3)196-200.
  • Stemer AB, Huisa B, Zivin J. "Transcranial Laser Therapy For Acute Ischemic Stroke: A Pooled Analysis of NEST-1 and NEST-2." Platform Presentation, American Academy of Neurology Annual Meeting 2010.

Ratings and reviews

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

    4.9
  • Extent to which the care provider listened to you

    4.9
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.9
  • Provider included you in decisions

    4.9
  • Concern the care provider showed for your questions or worries

    4.9
  • Likelihood of recommending this care provider to others

    4.9
  • Dec 19, 2025

    Dr. Stemer is outstanding and I am blessed to have been referred to him.

  • Dec 11, 2025

    Dr. Stemer is excellent at answering questions thoughtfully and thoroughly

  • Oct 2, 2025

    Dr. Stemer always listen to the patient concerns carefully and remembers the last visit & status very well. He answers questions with ample knowledge and experiences which makes patient feel secured.