Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William B Ershler, MD

Individual provider Hematology & Oncology Physician · NPI 1669496881

Dr. William B Ershler, MD is an Internal Medicine in Fairfax, Virginia. Graduated from State University of Ny Upstate Medical University in 1974, 52 years ago. Practices with Inova Health Care Services, a 1,827-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
52
Trained at
State University of Ny Upstate Medical University
Licensed in
VA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8501 Arlington Blvd Ste 340
Fairfax, VA 22031
Phone: (703) 207-0733
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 6400 Arlington Blvd, Falls Church, VA 22042-2325 — (703) 241-1010

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 0101054727 (VA)

Record details

NPI number1669496881
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 27, 2006
Last updated in NPPESNovember 27, 2023
Certification dateOctober 16, 2020
Mailing address8110 Gatehouse Rd Ste 300w, Falls Church, VA 22042-1253

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHEMATOLOGY/ONCOLOGY, MEDICAL ONCOLOGY
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1974 (52 years in practice)
Group practice Inova Health Care Services — 1827 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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