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Nurse Practitioner

Thomas N. Groff, NP

Sees patients in Reston, VA · Aldie, VA · Virginia

Summary

Thomas N. Groff, NP (Nurse Practitioner) is enrolled with Medicare at 2 practice locations in Reston, VA and Aldie, VA. NPI 1861849457. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(703) 522‑2089 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Thomas N. Groff, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

2Practice locations
Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
4Years since medical school (graduated 2022)
MaleGender (as listed)
Columbia Associates in Psychiatry PCGroup practice

Quick answers

Where does Thomas N. Groff see patients?
Medicare's clinician data lists 2 practice locations, including Reston, VA and Aldie, VA. Call before your visit to confirm the address.
What is Thomas N. Groff's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Thomas N. Groff accept Medicare assignment?
Yes. Medicare's clinician data says Thomas N. Groff accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Thomas N. Groff offer telehealth?
Medicare's clinician data says Thomas N. Groff offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Thomas N. Groff?
(703) 522-2089, as listed in official Medicare / NPI Registry data.
What is Thomas N. Groff's NPI number?
1861849457. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Thomas N. Groff is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Thomas N. Groff as a member of this group (CMS data updated 2026-10-02).

  • Columbia Associates in Psychiatry PC149 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Virginia →

Other nurse practitioners in Reston

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

All nurse practitioners in Reston →

Clinician information

CredentialNP
Graduation year2022
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1861849457
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians