Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

John A. Vitarello Iii, MD

Works at hospitals in Falls Church, VA · Leesburg, VA · Reston, VA · Virginia

Summary

Dr. John A. Vitarello Iii, MD is an internal medicine doctor at 1830 Town Ctr Dr, Reston, VA 20190. Phone: (703) 481-3165. Accepts Medicare assignment. NPI 1811556657. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1830 Town Ctr Dr, Reston, VA 20190 · Directions (6 more locations)
  • Phone: (703) 481‑3165
  • Medicare: Accepts Medicare assignment
  • Hospitals: Inova Fairfax Hospital, Inova Loudoun Hospital, Reston Hospital Center
  • Group practice: Privia Medical Group, LLC
  • Medical school: Georgetown University School Of Medicine · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about John A. Vitarello Iii, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does John A. Vitarello Iii accept Medicare assignment?
Yes. Medicare's clinician data says John A. Vitarello Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is John A. Vitarello Iii's NPI number?
1811556657. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John A. Vitarello Iii works

Medicare's Facility Affiliation Data lists John A. Vitarello Iii at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490063
  • Inova Loudoun HospitalLeesburg, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490043
  • Reston Hospital CenterReston, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490107

Practice locations

Addresses where John A. Vitarello Iii is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists John A. Vitarello Iii as a member of this group (CMS data updated October 2, 2026).

  • Privia Medical Group, LLC1,533 clinicians in the group

Specialties

Find other Internal Medicine doctors in Virginia →

Other internal medicine doctors in Reston

Clinicians with the same Medicare primary specialty in Reston, VA — not a recommendation.

All internal medicine doctors in Reston →

Other clinicians in Privia Medical Group, LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1811556657
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians