David Merrell, PHARM.D
David Merrell, PHARM.D is a Pharmacist in Sierra Vista, AZ, registered under NPI 1003363557.
Getting there
Here is what surrounds this office in Sierra Vista, based on OpenStreetMap data collected Sep 21, 2026. Parking is available about 737 ft away. The nearest transit stop is 0.37 mi away.
Getting here and what is nearby
Transit 106 ft ~1 min
Parking 496 ft ~2 min
Parking 637 ft ~3 min
Parking 737 ft ~3 min
Hotel Days Inn 0.24 mi ~5 min
Hotel Comfort Inn & Suites Sierra Vista near Ft Huachuca 0.27 mi ~6 min
3500 East Ferry Boulevard, Sierra Vista 85635-2906
Transit 0.29 mi ~6 min
Convenience Good 2 Go 0.29 mi ~6 min
Gas station Good 2 Go 0.29 mi ~6 min
2632 East Fry Boulevard, Sierra Vista 85635
Restaurant R & R Pizza Express 0.34 mi ~7 min
Transit 0.37 mi ~8 min
Restaurant Sonic 0.38 mi ~8 min
3640 East Fry Boulevard, Sierra Vista 85635
06:00-24:00
Restaurant Domino's 0.40 mi ~9 min
3670 East Fry Boulevard, Sierra Vista 85635
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Gas station Valero 0.49 mi ~10 min
Convenience Valero 0.50 mi ~11 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 |
|---|---|---|
| S019265 | AZ | Pharmacist primary |
This provider holds licence S019265 issued in AZ. 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 | 1003363557 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 1, 2016 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PHARM.D |
| Practice address |
155 CALLE PORTAL STE 600 Sierra Vista, AZ 85635 (520) 515-8678 |
| Mailing address |
155 CALLE PORTAL STE 100 Sierra Vista, AZ 85635 |
| Other identifiers |
S019265
· Other (AZ) |
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 | 3 | 6 | 3 | 5 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 6 | 6 | 5 | 1 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.