1. Home
  2. Directory
  3. Virginia
  4. Fort Belvoir
  5. Internal Medicine
  6. NPI Profile

DR. AARON RICHARD FARMER DO
NPI 1821225129
Internal Medicine - Infectious Disease in Fort Belvoir, VA

Active since June 15, 2009PECOS Enrolled
9300 DEWITT LOOP, FORT BELVOIR, VA 22060(571) 231-1402 Get Directions Write a Review

NPPES record last updated: May 28, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 28, 2026, Sep 2, 2016 (2 updates tracked since 2016).

About Dr. Aaron Richard Farmer Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. AARON RICHARD FARMER DO (NPI 1821225129) is an individual infectious disease provider in Fort Belvoir, Virginia, licensed in Virginia (0102202763) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821225129
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. AARON RICHARD FARMERCredential: DO
Location Address9300 DEWITT LOOPFort Belvoir, VA 22060-5285
Mailing Address9300 Dewitt LoopFort Belvoir, VA 22060-5285
Phone(571) 231-1402
Sole ProprietorNo
Enumeration DateJune 15, 2009
Last NPPES UpdateMay 28, 20262 updates tracked since enumeration
NPPES CertifiedMay 28, 2026
✔ NPI 1821225129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in VA · 0102202763
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0102202763 (VA)
9300 DEWITT LOOP, Fort Belvoir, VA 22060
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Aaron Richard Farmer Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22060 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ASHLEY L MALTEZ-LAURIENTI PSY.D.
Counselor (Mental Health)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (712) 313-2245
MEGAN ANNE KELLY COTA
Occupational Therapy Assistant
9300 DEWITT LOOP
FT BELVOIR, VA 22060
Fairfax County (571) 231-1321
MS. SHANNON NOELLE FULCROD LCSW, CSAC, MAC
Social Worker (Clinical)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-1200
CALE WRIGHT PSYD
Psychologist (Clinical Child & Adolescent)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-0524
SPENCER OSBOURN
Psychiatry & Neurology (Neurology)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-2966
HEATHER R BARAL
Social Worker (Clinical)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-3224
UMAR KHAN
Orthopaedic Surgery
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-3224
DAVID PITTS JR. DO
General Practice
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-1803

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aaron Farmer's NPI number?

The NPI number for Aaron Farmer is 1821225129. It was assigned to this individual provider in the NPPES registry on June 15, 2009.

Where is Aaron Farmer located?

Aaron Farmer practices at 9300 Dewitt Loop, Fort Belvoir, VA 22060. The listed phone number is (571) 231-1402.

What is Aaron Farmer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Aaron Farmer enrolled in Medicare?

Yes. Aaron Farmer is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Aaron Farmer was last updated on May 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.