David Scallio
David Scallio is a Pharmacist in Ellicott City, MD, registered under NPI 1003419086. 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 Ellicott City, based on OpenStreetMap data collected Sep 25, 2026. Parking is available about 830 ft away. A pharmacy sits 0.33 mi from the entrance (Crossroads Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 462 ft away.
Getting here and what is nearby
Grocery Giant 7 ft ~1 min
Restaurant Hunan Legend 249 ft ~1 min
4725 Dorsey Hall Drive, Ellicott City 21042
Restaurant Pipilinka 274 ft ~2 min
Restaurant Yama Sushi 316 ft ~2 min
Parking 363 ft ~2 min
Parking 427 ft ~2 min
Coffee Casey's Coffee 462 ft ~2 min
4725 Dorsey Hall Drive, Ellicott City 21042
Mo-Fr 06:00-16:00; Sa 07:00-18:00; Su 08:00-16:00
Gas station Shell 736 ft ~3 min
4755 Dorsey Hall Drive, Ellicott City 21042
Convenience Express Mart 819 ft ~4 min
4755 Dorsey Hall Drive, Ellicott City 21042
Parking 830 ft ~4 min
Pharmacy Crossroads Pharmacy 0.33 mi ~7 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 |
|---|---|---|
| 10308 | MD | Pharmacist primary |
This provider holds licence 10308 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 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
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 | 1003419086 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 20, 2020 |
| Last updated | Nov 20, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
4715 DORSEY HALL DR Ellicott City, MD 21042 (410) 992-3797 |
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 | 1 | 9 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 1 | 9 | 0 | 7 |
Sum = 54 · next multiple of 10 = 60 · 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.