John Charalambopoulos, MD

NPI 1073769659ActiveIndividual· Internal Medicine· Alexandria, VA

Internal Medicine (MD) in Alexandria, Virginia, trained at Jefferson Medical College of Thomas Jefferson University (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $348,982 for 3,096 claims, against $109,844 paid for services in 2024. Pfizer Inc. was the largest of 6 companies reporting payments in 2025, $454.78 in all, mostly food and beverage.

Overview

NPI	1073769659
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	Yes
NPI issued	Aug 14, 2008
Last updated in NPPES	Dec 16, 2020
Certified by provider	Dec 16, 2020

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	0101246141	VA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (DC)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	362
Services billed	1,902 across 41 procedure codes
Paid by Medicare	$109,844

Part D prescriptions in 2024

Prescriptions (claims)	3,096 · 7,559 30-day fills
Patients	295
Total drug cost	$348,982
Generic share	87% of claims

Medicare sources and data years

Education and affiliations

Medical school	Jefferson Medical College of Thomas Jefferson University
Graduation year	2006
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth