Bryan Grimmer, D.D.S.
Bryan Grimmer, D.D.S. is a provider specialising in General Practice Dentistry in Herndon, VA, registered under NPI 1003095266. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Herndon, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.37 mi away. The nearest transit stop is 0.32 mi away. A pharmacy sits 997 ft from the entrance (Herndon Pharmacy and Medical Supply), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Restaurant Papa John's 482 ft ~2 min
150 Elden Street, Herndon 20170-4831
Mo-Su 10:00-23:00
Restaurant TeaBreak Pho & Boba 529 ft ~3 min
150 Elden Street, Herndon 20170
Mo-Fr 11:00-20:00; Sa 11:00-19:00
Restaurant Spice Town 596 ft ~3 min
Hotel Comfort Inn Herndon-Reston 825 ft ~4 min
Pharmacy Herndon Pharmacy and Medical Supply 997 ft ~4 min
Transit 0.25 mi ~5 min
Transit 0.26 mi ~6 min
Parking Parking Garage B 0.27 mi ~6 min
Transit 0.32 mi ~7 min
Coffee Bagel Cafe 0.34 mi ~7 min
300 Elden Street, Herndon 20170
Su-Sa 06:30-15:00
Hotel Trellis Herndon 0.35 mi ~8 min
Parking 0.35 mi ~7 min
Parking 0.37 mi ~8 min
Grocery Trader Joe's 0.38 mi ~8 min
11958 Killingsworth Avenue, Reston 20194
Mo-Su 08:00-21:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 0401005512 | VA | General Practice Dentistry primary |
This provider holds licence 0401005512 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What General Practice covers
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. NUCC Health Care Provider Taxonomy, code 1223G0001X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003095266 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 24, 2007 |
| Last updated | Oct 24, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | D.D.S. |
| Practice address |
102 ELDEN ST SUITE 17 Herndon, VA 20170 (703) 478-0315 Fax (703) 478-7451 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 9 | 5 | 2 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 1 | 2 | 3 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.