Mark Sierra, RPH
Mark Sierra, RPH is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Tucson, AZ, registered under NPI 1003132358.
Getting there
Here is what surrounds this office in Tucson, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 272 ft away. The nearest transit stop is 971 ft away. A pharmacy sits 0.22 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 396 ft away.
Getting here and what is nearby
Grocery Fry's Food and Drug 38 ft ~1 min
7050 East Golf Links Road, Tucson 85730
Mo-Fr 09:00-20:00;Sa 09:00-18:00;Su 10:00-17:00
Parking 212 ft ~1 min
Restaurant Little Caesars 222 ft ~1 min
Parking 262 ft ~1 min
Parking 272 ft ~2 min
Gas station Shell 372 ft ~2 min
Restaurant Jerry Bob's Restaurant 389 ft ~2 min
7066 East Golf Links Road, Tucson 85730
Coffee Starbucks 396 ft ~2 min
Restaurant Burger King 446 ft ~2 min
7006 East Golf Links Road, Tucson 85730-1064
Mo 06:00-20:00; Tu 06:00-23:00; We-Sa 06:00-21:00; Su 06:00-22:00
Transit 723 ft ~3 min
Pharmacy Walmart Pharmacy 901 ft ~4 min
Transit 925 ft ~4 min
Transit 971 ft ~4 min
Grocery Walmart Neighborhood Market 1,002 ft ~4 min
2550 South Kolb Road, Tucson 85710
Mo-Su 06:00-24:00
Pharmacy Walgreens 0.21 mi ~5 min
Pharmacy Walgreens 0.22 mi ~5 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 |
|---|---|---|
| 8908 | AZ | Pharmacist Clinician (PhC)/ Clinical… primary |
This provider holds licence 8908 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 Clinician (PhC)/ Clinical Pharmacy Specialist covers
Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management. NUCC Health Care Provider Taxonomy, code 1835P0018X
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 | 1003132358 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 12, 2010 |
| Last updated | Jun 17, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | RPH |
| Practice address |
7050 E GOLF LINKS RD Tucson, AZ 85730 (520) 745-2205 Fax (520) 750-9698 |
| Mailing address |
15994 CAMINO CASAL Sahuarita, AZ 85629 |
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 | 2 | 3 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 3 | 4 | 3 | 1 |
Sum = 42 · next multiple of 10 = 50 · 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.