Neurology

David Ermak, D.O.

System Director of Acute Stroke

Dancille, PA

David Matthew Ermak, D.O., is a vascular neurologist and neurohospitalist based in Danville, Pennsylvania, serving as System Director of Acute Stroke at Geisinger Medical Center. He specializes in the diagnosis and treatment of neurological disorders, with a primary focus on vascular neurology, including acute stroke, cerebrovascular diseases, and related conditions affecting the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and associated blood vessels. As a neurohos

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Credentials

Board Certifications

Neurology (ABPN)
Vascular Neurology (ABPN)

Education & Training

Medical School: Philadelphia College of Osteopathic Medicine (DO, 2009)
Internship: Geisinger Health System (Internal Medicine, 2010)
Residency: Penn State Milton S. Hershey Medical Center (Neurology, 2013)
Fellowship: Penn State Milton S. Hershey Medical Center (Vascular Neurology, 2014)

Years in Practice

17+ years

Peer Recognition

ABPN — Board Certified in Neurology
2026
ABPN — Board Certified in Vascular Neurology
2026

Clinical Focus

Subspecialties

Vascular Neurology & Stroke

Conditions & Treatments

Vascular NeurologyCarotid Artery DiseaseTransient Ischemic AttackStrokeStroke & Cerebrovascular Disease

Insurance(s) Accepted

90 Degree BenefitsASR Health Benefits

AetnaAllegiance Health Plans

Ambetter

Please verify your coverage with the provider — plan participation can change.

Practice Details

Hospital Affiliations

Geisinger Medical Center
Geisinger Wyoming Valley Medical Center

Languages

English

Conditions Dr. Ermak treats

Insurance accepted

Frequently asked

Does Dr. Ermak accept 90 Degree Benefits insurance?

David Ermak's public profile lists 90 Degree Benefits, ASR Health Benefits, and Aetna plus 49 more health plans as accepted plans. Plan participation can change — confirm directly with the practice before your visit.

Where does Dr. Ermak practice?

David Ermak practices in Dancille, PA with hospital affiliations including Geisinger Medical Center and Geisinger Wyoming Valley Medical Center.

What does Dr. Ermak specialize in?

David Ermak is a board-certified neurology specialist with focus areas in Vascular Neurology & Stroke.

How long has Dr. Ermak been practicing?

David Ermak has 17+ years of clinical experience in neurology.

What is Dr. Ermak's medical training?

Public profile training history includes: Medical School: Philadelphia College of Osteopathic Medicine (DO, 2009); Internship: Geisinger Health System (Internal Medicine, 2010); Residency: Penn State Milton S. Hershey Medical Center (Neurology, 2013).