Whitney Jefferson
Whitney Jefferson is a Hearing Instrument Specialist in Rockville, MD, registered under NPI 1003759440.
Getting there
Here is what surrounds this office in Rockville, based on OpenStreetMap data collected Oct 24, 2026. Parking is available about 0.36 mi away. The nearest transit stop is 0.29 mi away, served by Research Blvd at Omega Dr. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 545 ft ~3 min
2611 Research Boulevard
Restaurant LJ's Cafe 637 ft ~3 min
9210 Corporate Boulevard
Restaurant Dunkin' 891 ft ~4 min
15235 Siesta Key Way, Rockville 20850
Mo-Th 05:00-20:00; Fr 05:00-17:00; Sa 06:00-17:00; Su 06:00-20:00
Transit Research Blvd at Omega Dr 0.27 mi ~6 min
Transit Medical Center Dr at JHU 0.28 mi ~6 min
Transit Research Blvd at Omega Dr 0.29 mi ~6 min
Hotel Radisson Hotel Washington DC-Rockville 0.31 mi ~7 min
Coffee Passion Bakery Café 0.32 mi ~7 min
Hotel Hilton Garden Inn 0.32 mi ~7 min
Restaurant Subway 0.32 mi ~7 min
Hotel Sleep Inn 0.33 mi ~7 min
Parking 0.34 mi ~7 min
9613 Medical Center Drive, Rockville 20850
Parking 0.36 mi ~8 min
9211 Corporate Boulevard
Grocery Safeway 0.49 mi ~10 min
14939 Shady Grove Road, Rockville 20850
Mo-Su 06:00-23:00
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 |
|---|---|---|
| 02999 | MD | Hearing Instrument Specialist primary |
This provider holds licence 02999 issued in MD. 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 Hearing Instrument Specialist covers
Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society NUCC Health Care Provider Taxonomy, code 237700000X
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 | 1003759440 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 10, 2026 |
| Last updated | Apr 10, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
15200 SHADY GROVE RD STE 304 Rockville, MD 20850 (301) 977-8695 |
| Mailing address |
3004 YOST PL NE Washington, DC 20018 |
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 | 7 | 5 | 9 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 5 | 9 | 4 | 8 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.