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

Joshua M Allen, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1942628458

Joshua M Allen, MD is a Hematology/Oncology in Fairfax, Virginia. Graduated from Georgetown University School of Medicine in 2014, 12 years ago. Practices with Inova Health Care Services, a 1,827-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Virginia.

Years since qualifying
12
Trained at
Georgetown University School of Medicine
Licensed in
VA
In the registry since
2014
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3580 Joseph Siewick Dr Ste 403
Fairfax, VA 22033-1764
Phone: (703) 391-4395
Fax: (703) 391-4394
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8081 Innovation Park Dr, Fairfax, VA 22031-4867 — (571) 472-4724

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 0101268640 (VA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 0101268640 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101268640 (VA)

Record details

NPI number1942628458
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 1, 2014
Last updated in NPPESApril 22, 2026
Certification dateApril 22, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Inova Health Care Services — 1827 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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