Gavin Van De Walle, MS, RD
Gavin Van De Walle, MS, RD is a Registered Dietitian in Sioux Falls, SD, registered under NPI 1003398256. 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 Sioux Falls, based on OpenStreetMap data collected Sep 24, 2026. Parking is available about 0.37 mi away.
Getting here and what is nearby
Parking 0.28 mi ~6 min
Parking 0.37 mi ~8 min
Convenience Circle K 0.38 mi ~8 min
Gas station Circle K 0.40 mi ~9 min
1301 East 69th Street, Sioux Falls 57108
Gas station Casey's 0.43 mi ~9 min
1600 East 69th Street, Sioux Falls 57108
Convenience Casey's General Store 0.45 mi ~10 min
1600 East 69th Street, Sioux Falls 57108
Mo-Su 05:00-23:00
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.
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 Dietitian, Registered covers
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation. NUCC Health Care Provider Taxonomy, code 133V00000X
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 | 1003398256 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 4, 2018 |
| Last updated | Mar 14, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MS, RD |
| Practice address |
1601 E 77TH ST APT 1428 Sioux Falls, SD 57108 (605) 323-7222 |
| Mailing address |
PO BOX 210 Sioux Falls, SD 57101 |
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 | 9 | 8 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 9 | 7 | 2 | 1 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.