William Kapfer
William Kapfer is a Professional Counselor in Reston, VA, registered under NPI 1003529983. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Reston, based on OpenStreetMap data collected Oct 3, 2026. Parking is available about 0.37 mi away. There is EV charging 0.36 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 948 ft away. A pharmacy sits 0.33 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Transit 147 ft ~1 min
Transit 249 ft ~1 min
Parking 358 ft ~2 min
Restaurant McDonald's 361 ft ~2 min
11265 Roger Bacon Drive, Reston 20190-5201
05:00-24:00
Restaurant Taco Bell 384 ft ~2 min
11257 Roger Bacon Drive, Reston 20190
Mo-Th 07:00-01:00; Fr 07:00-24:00; Sa 07:00-01:30; Su 07:00-01:00
Gas station Exxon Mobil 431 ft ~2 min
1818 Wiehle Avenue, Reston 20190-5209
Mo-Su 06:00-23:00
Restaurant Pupatella 500 ft ~2 min
1821 Wiehle Avenue, 20190
Fr-Sa 11:30-22:00; Su-Th 11:30-21:00
Transit 948 ft ~4 min
Parking Wiehle Avenue Metro Parking 0.32 mi ~7 min
Coffee Starbucks 0.33 mi ~7 min
1908 Reston Metro Plaza, Reston 20190-5237
Mo-Th 06:00-19:30; Sa,Su 06:30-18:00; Fr 06:00-20:30
Hotel Homewood Suites by Hilton Reston 0.33 mi ~7 min
1735 Business Center Drive, Reston 20190
Pharmacy CVS Pharmacy 0.33 mi ~7 min
1906 Reston Metro Plaza, 20190
EV charging Tesla Supercharger 0.36 mi ~8 min
Parking 0.37 mi ~8 min
1886 Metro Center Drive, 20190
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 |
|---|---|---|
| 0701013229 | VA | Professional Counselor primary |
| 0704014323 | VA | Counselor |
This provider holds licence 0701013229 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Mental Health Counselor
- PAC ID
- 9739523572
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| District of Columbia | I20240220002121 | Practitioner - Mental Health Counselor |
| Virginia | I20251015001771 | Practitioner - Mental Health Counselor |
Medicare enrolment is recorded as approved under the provider type Practitioner - Mental Health Counselor. There are 2 separate enrolment records across 2 states (DC, VA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Professional covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YP2500X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 101YP2500X | Professional Counselor Professional | 0701013229 | VA | primary |
| 101Y00000X | Counselor | 0704014323 | VA |
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 | 1003529983 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 5, 2023 |
| Last updated | Jan 22, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
11260 ROGER BACON DR STE 103 Reston, VA 20190 (855) 284-7483 Fax (617) 807-0958 |
| Mailing address |
PO BOX 748465 Atlanta, GA 30374 |
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 | 5 | 2 | 9 | 9 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 2 | 9 | 9 | 7 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.