MERRELL FOOT & ANKLE PLLC
MERRELL FOOT & ANKLE PLLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003597709, based in Spearfish, SD. It is classified under Podiatric Clinic/Center.
Getting there
Here is what surrounds this office in Spearfish, based on OpenStreetMap data collected Oct 9, 2026. Parking is available about 404 ft away. A pharmacy sits 927 ft from the entrance (Safeway), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.50 mi away.
Getting here and what is nearby
Restaurant Domino's 0.00 mi ~1 min
1410 North Avenue, spearfish 57783
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Parking 98 ft ~1 min
Parking 132 ft ~1 min
Restaurant Jimmy John's 169 ft ~1 min
Pharmacy Walgreens 353 ft ~2 min
1430 North Avenue, Spearfish 57783
Parking 404 ft ~2 min
Gas station Safeway Fuel Station 653 ft ~3 min
Grocery Safeway 840 ft ~4 min
Coffee Starbucks 882 ft ~4 min
Pharmacy Safeway 927 ft ~4 min
1606 North Avenue, Spearfish 57783
Mo-Sa 08:00-13:30,14:00-18:00; Su 10:00-13:30,14:00-16:00
Restaurant Taco Bell 939 ft ~4 min
1705 North Avenue, Spearfish 57783
Mo-Th 06:00-02:00; Fr-Sa 06:00-03:00; Su 06:00-02:00
Hotel Days Inn 0.25 mi ~6 min
Coffee City Brew Coffee 0.27 mi ~6 min
130 Ryan Road, Spearfish 57783
Gas station Loaf 'N Jug 0.45 mi ~10 min
Convenience Loaf 'N Jug 0.46 mi ~10 min
Hotel Spearfish Creek Inn 0.48 mi ~10 min
Hotel Best Western Black Hills Lodge 0.49 mi ~10 min
540 East Jackson Boulevard, Spearfish 57783-2204
Coffee Leone's Creamery 0.50 mi ~10 min
722 1/2 North Main Street, Spearfish 57783
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 6709234867
- Enrollment ID
- O20231129003479
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Podiatric covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QP1100X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003597709 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jul 26, 2023 |
| Last updated | Nov 29, 2023 |
| Status | Active |
| Practice address |
1410 NORTH AVE STE 1 Spearfish, SD 57783 (605) 722-3668 Fax (605) 722-3669 |
| Other names |
A Step Ahead Foot & Ankle Clinic Former Legal Name |
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 | 9 | 7 | 7 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 5 | 7 | 0 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.