Grace I Gillen
Dentist - General Practice β’ Reston, VA
1890 Preston White Dr Ste 200
Reston, VA 201915430
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
1890 Preston White Dr Ste 200
Reston, VA 201915430
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dentist - General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2023
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Reston and Virginia
43 active clinicians are listed under Dentist - General Practice with a practice address in Reston, VA (3,366 in Virginia).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Reston
0% of these 43 clinicians have the CMS telehealth indicator.
0% of these 43 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-25NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dentist - General Practice
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Medicine
Dentist - Prosthodontics
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Surgery
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1890 PRESTON WHITE DR STE 200, RESTON, VA 201915430 (Tel: 7034378811)
Dentist (license number reported to NPPES: VA 0401419379)
NPI status registered as active in NPPES database
Registered at 622 W 168TH ST, NEW YORK, NY 100323720 (Tel: 2123056100)
Registered at 13007 PINEY GLADE RD, HERNDON, VA 201712956 (Tel: 5712966978)
Recorded as GRACE GILLEN
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentist - General Practices in Reston
- Dr. John Han, DMD
- Dr. Joseph Madison, DMD
- Dr. Majid Dastgir, DMD
- Dr. Taimour Raja, DDS
- Dr. Gary Hartz, DMD
- Dr. Shane Costa, DDS
Mailing Address
13007 Piney Glade Rd
Herndon, VA 201712956
Phone: 5712966978