William Krupp, RPH
William Krupp, RPH is a Pharmacist in Flint, MI, registered under NPI 1003525361. 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 Flint, based on OpenStreetMap data collected Oct 3, 2026. Parking is available about 0.48 mi away. The nearest transit stop is 467 ft away, served by Fenton Road & Pettibone Avenue.
Getting here and what is nearby
Transit Fenton Road & Waldman Avenue 162 ft ~1 min
Transit Fenton Road & Atherton Road 219 ft ~1 min
Restaurant Krystal Jo's 261 ft ~1 min
Transit Fenton Road & Pettibone Avenue 467 ft ~2 min
Restaurant Subway 546 ft ~3 min
Convenience Admiral Petroleum 612 ft ~3 min
3913 Fenton Road, Flint 48507
Gas station Admiral Petroleum 619 ft ~3 min
3913 Fenton Road, Flint 48507
Gas station One Stop Food Store 674 ft ~3 min
3910 Fenton Road, Flint 48507
Convenience One Stop Food Store 732 ft ~3 min
3910 Fenton Road, Flint 48507
Restaurant Domino's 0.38 mi ~8 min
4402 Fenton Road, Flint 48507
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Parking 0.48 mi ~10 min
Grocery Landmark Food Center 0.51 mi ~11 min
4644 Fenton Road, Flint 48507
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 |
|---|---|---|
| 5302025286 | MI | Pharmacist primary |
This provider holds licence 5302025286 issued in MI. 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 | 1003525361 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 15, 2022 |
| Last updated | Nov 15, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | RPH |
| Practice address |
3717 FENTON RD Flint, MI 48507 (810) 232-5118 |
| Mailing address |
6975 PITTSFORD ST Canton, MI 48187 |
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 | 5 | 2 | 5 | 3 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 2 | 1 | 3 | 3 |
Sum = 39 · next multiple of 10 = 40 · check digit = 1 · actual last digit = 1
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.