Andrew Benjamin Stemer, MD| Neurology | MedStar Health

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

4.9 out of 5 (264 reviews)

Specialties: Neurology

Languages: English


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 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, 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

  • Aneurysm
  • Arteriovenous Fistula
  • Arteriovenous Malformation (AVM)
  • Atherosclerosis
  • Carotid Stenosis
  • Cerebrovascular Accident (CVA)
  • Confusion
  • Difficulty Speaking
  • Disorder Of Balance
  • Dizziness
  • Hemorrhagic Stroke
  • Ischemic Stroke
  • Lacunar Stroke
  • Moyamoya
  • Numbness
  • Subarachnoid Hemorrhage
  • Tingling
  • Transient Ischaemic Attack (TIA)
  • Unsteady Gait
  • Vision Loss
  • Visual Impairment
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Conditions and procedures

Conditions I treat

  • Abnormal Reflexes
  • Acute Inflammatory Demyelinating Polyneuropathy
  • Alzheimer's Disease
  • Amyotrophic Lateral Sclerosis
  • Aneurysm
  • Arm Weakness
  • Arteriovenous Fistula
  • Arteriovenous Malformation (AVM)
  • Ataxia
  • Atherosclerosis
  • Behcet Syndrome
  • Benign Paroxysmal Positional Vertigo
  • Carotid Stenosis
  • Central Nervous System Lupus
  • Cerebellar Ataxia
  • Cerebellar Disease
  • Cerebral Aneurysm
  • Cerebrovascular Accident (CVA)
  • Cervical Dystonia
  • Cervical Plexopathy
  • Charcot Marie Tooth Disease
  • CNS Vasculitis
  • Cognitive Impairment
  • Concussion
  • Confusion
  • Cranial Nerve Injury
  • Dejerine Sottas Disease
  • Diabetic Lumbosacral Radiculoplexus Neuropathy
  • Diabetic Neuropathy
  • Difficulty Speaking
  • Diplopia
  • Disorder Of Balance
  • Dizziness
  • Dural Arteriovenous Fistula
  • Encephalopathies
  • Epilepsy
  • Facial Droop
  • Facial Nerve Palsy And Paresis
  • Facial Pain
  • Facioscapulohumeral Muscular Dystrophy
  • Femoral Neuropathy
  • Guillain Barre Syndrome (GBS)
  • Headache
  • Hemorrhagic Stroke
  • HIV Associated Neurocognitive Disorder
  • HIV Myopathy
  • Horner Syndrome
  • Inclusion Body Myopathy
  • Ischemic Stroke
  • Lacunar Stroke
  • Leg Weakness
  • Lewy Body Dementia
  • Lip Droop
  • Lobar Atrophy Of Brain
  • Medication Overuse Headache
  • Memory Disorders
  • Movement Diseases And Disorders
  • Moyamoya
  • Multifocal Motor Neuropathy
  • Multiple Sclerosis
  • Muscle Weakness
  • Myasthenia Gravis
  • Myelitis
  • Myoclonic Epilepsy With Ragged Red Fibers
  • Nerve Root Disorder
  • Nervous System Disorders
  • Neuralgia
  • Neuromuscular Diseases
  • Neuromyelitis Optica (NMO)
  • Neuropathy
  • Non Ruptured Cerebral Aneurysm
  • Numbness
  • Occipital Neuralgia
  • Orthostatic Hypotension
  • Paramyotonia Congenita
  • Paraplegia
  • Paresthesia
  • Parkinson's Disease (PD)
  • Periodic Paralysis
  • Peripheral Nerve Injury
  • Peripheral Neuropathy
  • Periventricular Leukomalacia
  • Plexopathy
  • Positional Vertigo
  • Primary Cerebellar Degeneration
  • Primary Progressive Aphasia
  • Pseudotumor Cerebri
  • Quadriplegia
  • Radiculopathy
  • Sensory Impairment
  • Sensory Neuronopathy
  • Small Fiber Neuropathy
  • Spasticity
  • Spinocerebellar Ataxia
  • Spinocerebellar Degeneration
  • Spinocerebellar Diseases
  • Statin Myopathy
  • Subarachnoid Hemorrhage
  • Syncope
  • Tetraplegia
  • Tic Disorders
  • Tingling
  • Tinnitus
  • Torticollis
  • Transient Ischaemic Attack (TIA)
  • Traumatic Brain Injury
  • Tremor
  • Trigeminal Neuralgia
  • Unsteady Gait
  • Vertigo
  • Vision Loss
  • Visual Impairment
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Procedures I perform

  • Angiography
  • Avm Embolization
  • Botox For Dystonia
  • Botox For Hemifacial Spasm
  • Botox For Spasticity
  • Brain Injury Rehabilitation
  • Epilepsy Monitoring Unit Evaluation (EMU)
  • Headache Therapy
  • Multiple Sclerosis (MS) Infusion Treatment
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Practice locations

Distance from Change LocationEnter your Location

3800 Reservoir Road Northwest
Pasquerilla Healthcare Center 7th Fl Dept Neurology
Washington, DC, 20007


Fax 410-354-5956

Get Directions

miles away

Fax 410-354-5956

110 Irving Street Northwest
Washington, DC, 20010


Fax 410-354-5956

Get Directions

miles away

Fax 410-354-5956


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
    • CareFirst Group Medicare Advantage
    • Innovation Health: Open POS Plus
    • Medicaid - District of Columbia
    • Kaiser Flexible Choice
    • United Core Essential (HMO)
    • Carefirst Healthy Blue (HMO/POS)
    • Tricare East Prime
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • Aetna Managed Choice (POS)
    • United GEHA (for all other states) Compass Rose
    • United Nursing Home Plan (C-SNP
    • MedStar Family Choice DC Healthy Families
    • United Select HMO - EPO/NPP
    • Aetna Traditional Choice (PPO)
    • CareFirst Blue Card Program (Out-of-area BCBS plans)
    • Aetna Quality Point of Service (POS)
    • Carefirst Blue Preferred PPO
    • Kaiser Permanente Signature-Added Choice
    • Cigna True Choice Medicare (PPO)
    • WellPoint Maryland
    • Kaiser HMO Plus and DHMO Plus Member
    • Aetna Open HMO/Open HMO Option/Open EPO Plus
    • United Erickson Advantage Plans
    • Carefirst BlueChoice HMO
    • Kaiser Signature
    • Veterans Affairs Community Care Network (VA CCN)
    • Aetna HMO
    • United Golden Rule
    • Health Services for Children with Special Needs (HSCSN)
    • Maryland Point of Service Plan (MPOS)
    • United Mamsi Life & Health
    • Aetna Signature Administrator PPO/TPA
    • Private Health Care Systems (PHCS) (PPO)
    • Aetna HMO-Open Access/Select OA
    • Virginia Premier
    • Anthem Plus BCBS of VA HealthKeepers Plus
    • CareFirst Maryland Indemnity or PPO
    • Tricare East Select
    • CareFirst MedStar Select PPO
    • Carefirst BlueChoice Opt Out Open Access
    • Aetna HealthFund/Health Network Option OA
    • Kaiser Medicare Advantage Signature and Select
    • Police and Fire Clinic
    • United Medicare Advantage DSNP District of Columbia
    • CareFirst (NCA) Indemnity
    • Cigna TotalCare (HMO D-SNP)
    • HumanaChoice Honor’s plan PPO
    • Aetna Medicare Advantage HMO & PPO Plans
    • Carefirst BlueChoice Opt Out Plus Open Access (POS)
    • Cigna Choice Fund PPO
    • Medicaid - Virginia
    • Innovation Health: Open Network Only Plus
    • United Navigate
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • Choice Care Network/HUMANA (PPO)
    • CareFirst BC/BS Advantage Core/Enhanced
    • CareFirst NASCO
    • Cigna Achieve Medicare (HMO C-SNP)
    • Federal Employee Program (Std/Basic PPO/Blue Focus)
    • Carefirst EPO
    • Anthem (POS & Open Access POS) BCBS of VA HealthKeepers
    • CareFirst MedStar PPO
    • United Optimum Choice
    • HealthyBlue PPO
    • Kaiser Select-Added Choice
    • Cigna EPO
    • Tricare Reserve Select
    • United Choice Plus
    • Cigna Network Open Access
    • I-SNP
    • United Select Plus (POS)
    • Traditional Medicare Fee for Service
    • CareFirst Administrators
    • Aetna Student Health Insurance
    • Cigna HMO Open Access
    • Medicaid - Maryland
    • Anthem HMO - BCBS of VA HealthKeepers
    • Innovation Health: Open POS II
    • Beech Street PPO
    • Innovation Health: POS Plus
    • MedStar Family Choice DC Healthcare Alliance
    • Aetna Open Choice (PPO)
    • Kaiser Select
    • Innovation Health: Indemnity
    • Cigna POS Open Access & Open Access Plus
    • UnitedHealthcare Individual Exchange Plans
    • Carefirst BlueChoice Open Access
    • HumanaChoice PPO
    • Aetna Select HMO/HealthFund/Health Network
    • United Choice
    • Cigna PPO and PPO Plus
    • Aetna Managed Choice Open Access (POS)
    • United Student Resources
    • Innovation Health: PPO
    • United Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Cigna Indemnity
    • United AARP Medicare Complete
    • Aetna Choice POS & Choice POS II
    • Kaiser Medicare Plus
    • WellPoint Maryland - Maryland Health Choice
    • D-SNP)
    • Innovation Health: HMO & EPO Plus
    • Veterans Affairs Community Care Network
    • United Community Plan - Maryland Health Choice Program
    • Cigna POS/Network POS
    • Cigna Preferred Medicare
    • United Group Medicare Advantage Plans
    • Innovation Health: Network Only Plus
    • United MD IPA (HMO)
    • Tricare for Life East
    • Cigna True Choice Plus Medicare (PPO)
    • Kaiser Maryland Medicaid MCO
    • Cigna Alliance Medicare (HMO) |
    • Aetna Elect Choice/ Open Access (POS)
    • United Options (PPO) (includes Empire PPO)
    • Cigna HMO & Network (HMO)
    • Innovation Health: POS
    • United MD IPA Preferred (POS)
    • Coventry Health Care National Network PPO
    • Coventry of Delaware HMO/PPO
    • MedStar Family Choice - Maryland Health Choice
    • Great-West Healthcare POS/CIGNA
    • Coventry Health Care of Virginia
    • First Health PPO



Board Certification: American Board of Psychiatry and Neurology, Neurology

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

Fellowship Program: MedStar Washington Hospital Center (2013)

Fellowship Program: University of California San Diego (2010)

Residency Program: Rush University Medical Center (2009)

Internship Program: Rush University Medical Center (2006)

Medical School: Rush Medical College of Medicine (2005)


  • 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

  • Extent to which the care provider listened to you

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

  • Care provider's efforts to include you in decisions about your care

  • Concern the care provider showed for your questions or worries

  • Likelihood of recommending this care provider to others

  • Mar 19, 2024

    Dr Stemer takes great care with his patients, answering all questions one may have. I highly recommend him.

  • Mar 7, 2024

    Dr. Stemer is an exceptional physician. Rarely have I encountered a doctor with his level of expertise & humanity. I would recommend him wholeheartedly - one of the very top docs in the DMV.

  • Nov 21, 2023

    Dr. Stemer is very informative, explained the upcoming procedures & possible surgical options/risks of surgery. He is comforting, but honest and explains things well.