William Ellis
William Ellis is a Pharmacist in Harrisburg, PA, registered under NPI 1003138504.
Getting there
Here is what surrounds this office in Harrisburg, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 466 ft away. There is EV charging 908 ft from the office (Swatara Supercharger) — useful if you are driving in from out of town. If you arrive early, there is a coffee shop 1,010 ft away.
Getting here and what is nearby
Grocery Walmart Supercenter 22 ft ~1 min
6535 Grayson Road, Harrisburg 17111
Mo-Su 06:00-24:00
Parking 342 ft ~2 min
Parking 464 ft ~2 min
Parking 466 ft ~2 min
Gas station Sam's Club 659 ft ~3 min
6781 Grayson Road, Harrisburg 17111
Restaurant Wendy's 608 ft ~3 min
Grocery Aldi 711 ft ~3 min
6445 Grayson Road, Harrisburg 17111
Mo-Su 09:00-20:00
EV charging Swatara Supercharger 908 ft ~4 min
Grocery Giant 950 ft ~4 min
6301 Grayson Road, Harrisburg 17111
Coffee Starbucks 1,010 ft ~4 min
Convenience Speedway 1,029 ft ~4 min
Gas station Speedway 1,005 ft ~4 min
Convenience Turkey Hill 0.33 mi ~7 min
Restaurant Italian Pizza and Subs 0.40 mi ~8 min
6220 Derry Street, Harrisburg 17111
Mo-Th 10:00-22:00; Fr-Sa 10:00-23:00; Su 12:00-22:00
Restaurant The Pour House on Derry 0.43 mi ~9 min
6200 Derry Street, Harrisburg 17111
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 |
|---|---|---|
| 034064 | NY | Pharmacist |
| RP033459R | PA | Pharmacist primary |
Licences are recorded in 2 states: NY, PA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: New York and Pennsylvania. The practice address on file is in Harrisburg, PA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Pharmacist covers
An individual licensed by the appropriate state regulatory agency to engage in the practice of pharmacy. The practice of pharmacy includes, but is not limited to, assessment, interpretation, evaluation, and implementation, initiation, monitoring or modification of medication and or medical orders; the compounding or dispensing of medication and or medical orders; participation in drug and device procurement, storage, and selection; drug administration; drug regimen reviews; drug or drug-related research; provision of patient education and the provision of those acts or services necessary to provide medication therapy management services in all areas of patient care. NUCC Health Care Provider Taxonomy, code 183500000X
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 | |
|---|---|---|---|---|
| 183500000X | Pharmacist | 034064 | NY | |
| 183500000X | Pharmacist | RP033459R | PA | primary |
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 | 1003138504 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 24, 2010 |
| Last updated | Feb 24, 2010 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
6535 GRAYSON RD Harrisburg, PA 17111 (717) 561-2905 |
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 | 1 | 3 | 8 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 3 | 7 | 5 | 0 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.