Kathryn Hamer, PA-S
Kathryn Hamer, PA-S is a Physician Assistant in Winchester, VA, registered under NPI 1003444308. 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 Winchester, based on OpenStreetMap data collected Sep 27, 2026. Parking is available about 387 ft away. The nearest transit stop is 0.25 mi away. A pharmacy sits 0.21 mi from the entrance (Martin's Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Coffee Starbucks 96 ft ~1 min
1690 South Pleasant Valley Road, Winchester 22601-4483
Parking 282 ft ~2 min
Restaurant McDonald's 315 ft ~2 min
1801 Pleasant Valley Road, Winchester 22601
Mo-Sa 05:00-23:00; Su 06:00-23:00
Hotel Hampton 350 ft ~2 min
Parking Edwards Village (SU) 367 ft ~2 min
Parking 387 ft ~2 min
Pharmacy Walgreens 447 ft ~2 min
Restaurant Taco Bell 409 ft ~2 min
1665 South Pleasant Valley Road, Winchester 22601
Mo-Th 07:00-02:00; Fr-Sa 07:00-03:00; Su 07:00-02:00
Restaurant Waffle House 414 ft ~2 min
Convenience Sheetz 568 ft ~3 min
Hotel Wingate 645 ft ~3 min
150 Wingate Drive, 22601
Gas station Sheetz 686 ft ~3 min
601 Millwood Avenue, Winchester 22601
Hotel Hilton Garden Inn 0.20 mi ~5 min
Pharmacy Martin's Pharmacy 0.21 mi ~5 min
1950 South Pleasant Valley Road, 22601
Mo-Fr 09:00-20:00; Sa 09:00-17:00,10:00-17:00
Grocery Martin's Super Markets 0.23 mi ~5 min
Transit 0.25 mi ~5 min
Coffee Kung Fu Tea 0.41 mi ~9 min
Gas station Sunoco 0.41 mi ~9 min
1630 South Loudoun Street, Winchester
Mo-Sa 06:00-22:00; Su 07:00-22:00
Coffee Joe Muggs Coffee 0.48 mi ~10 min
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 |
|---|---|---|
| 0110007998 | VA | Physician Assistant primary |
This provider holds licence 0110007998 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 - Physician Assistant
- PAC ID
- 9537564612
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Virginia | I20210827001518 | Practitioner - Physician Assistant |
| Maryland | I20221001000045 | Practitioner - Physician Assistant |
| District of Columbia | I20221001000049 | Practitioner - Physician Assistant |
Medicare enrolment is recorded as approved under the provider type Practitioner - Physician Assistant. There are 3 separate enrolment records across 3 states (VA, MD, DC). 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | 1003444308 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 31, 2020 |
| Last updated | Sep 9, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PA-S |
| Practice address |
607 E JUBAL EARLY DR Winchester, VA 22601 (540) 536-5100 |
| Mailing address |
220 CAMPUS BLVD STE 100 Winchester, VA 22601 |
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 | 4 | 4 | 4 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 4 | 8 | 3 | 0 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.