Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

David Mark Demaria

Individual provider Internal Medicine Physician · NPI 1043553852

David Mark Demaria is registered under Cardiovascular Disease (Cardiology) in Manassas, Virginia. Graduated from Georgetown University School of Medicine in 2013, 13 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
13
Trained at
Georgetown University School of Medicine
Licensed in
VA
In the registry since
2013
Specialties on file
3
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Practice location Address checks out

8640 Sudley Rd Ste 302
Manassas, VA 20110-4404
Phone: (703) 369-5959
Fax: (703) 369-7473
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 169 Ashley Ave, Charleston, SC 29425-8905 — (843) 792-3355

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 0101267566 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101267566 (VA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1043553852
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 29, 2013
Last updated in NPPESOctober 26, 2020
Certification dateSeptember 6, 2020

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Inova Health Care Services — 1827 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,925
Services billed 4,891 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Inova Health Care Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1827 clinicians in the practice; 12 are shown here.

Other providers in Manassas