Katlyn Johnson
Katlyn Johnson is a Pharmacist in Charleston, SC, registered under NPI 1003454620.
Getting there
Here is what surrounds this office in Charleston, based on OpenStreetMap data collected Sep 28, 2026. Parking is available about 0.50 mi away. The nearest transit stop is 0.23 mi away. A pharmacy sits 0.36 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 917 ft away.
Getting here and what is nearby
Grocery Publix 690 ft ~3 min
1401 Sam Rittenberg Boulevard, Charleston 29407-5031
07:00-22:00; Mar 31 off
Coffee Starbucks 917 ft ~4 min
Transit 0.21 mi ~5 min
Restaurant Ye Ole Fashioned 0.21 mi ~5 min
10:00-23:00
Restaurant Wingstop 0.22 mi ~5 min
Transit 0.23 mi ~5 min
Gas station Parker's 0.23 mi ~5 min
Restaurant McDonald's 0.29 mi ~6 min
1201 Sam Rittenberg Boulevard, Charleston 29407
Mo-Sa 06:00-23:00; Su 07:00-23:00
Pharmacy CVS Pharmacy 0.36 mi ~8 min
Parking 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 |
|---|---|---|
| 42241 | SC | Pharmacist primary |
This provider holds licence 42241 issued in SC. 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 | 1003454620 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 13, 2019 |
| Last updated | Dec 13, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1200 SAM RITTENBERG BLVD Charleston, SC 29407 (843) 573-4776 |
| Mailing address |
2056 PROMENADE CT Mt Pleasant, SC 29466 |
| Other identifiers |
29466
· Medicaid (SC) |
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 | 5 | 4 | 6 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 5 | 8 | 6 | 4 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.