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

Gregory Robert Trimble, MD

Individual provider Hospitalist Physician · NPI 1306064498

Gregory Robert Trimble, MD practises Internal Medicine in Falls Church, Virginia. Qualified in 2003, 23 years ago. Practices with Inova Health Care Services, a 1,827-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
23
Licensed in
VA
In the registry since
2007
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

3300 Gallows Rd
Falls Church, VA 22042-3307
Phone: (703) 776-3582
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 0101243239 (VA)

Record details

NPI number1306064498
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 23, 2007
Last updated in NPPESFebruary 1, 2021
Certification dateFebruary 1, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Inova Health Care Services — 1827 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients107
Services billed 339 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 Falls Church