LEONG WELLNESS INSTITUTE LLC
LEONG WELLNESS INSTITUTE LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003653973, based in Saint Louis, MO. It is classified under Chiropractor.
Getting there
Here is what surrounds this office in Saint Louis, based on OpenStreetMap data collected Sep 16, 2026. Parking is available about 0.37 mi away at River des Peres Greenway Trailhead. The nearest transit stop is 0.35 mi away, served by Hampton at Gravois Northbound. A pharmacy sits 0.37 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Parking 579 ft ~3 min
Parking 816 ft ~4 min
Transit Gravois at Hampton Westbound 0.29 mi ~6 min
Pharmacy Walgreens 0.31 mi ~7 min
3631 Gravois Avenue, St. Louis 63116
Transit Germania at Gravois Southbound 0.32 mi ~7 min
Transit Hampton at Gravois Northbound 0.35 mi ~8 min
Parking River des Peres Greenway Trailhead 0.37 mi ~8 min
Pharmacy CVS Pharmacy 0.37 mi ~8 min
Grocery Schnucks 0.43 mi ~9 min
7450 Hampton Avenue, Saint Louis 63116
Restaurant Gyro Company 0.44 mi ~9 min
7240 Gravois Avenue, Saint Louis 63116
Gas station Phillips 66 0.45 mi ~9 min
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 Chiropractor covers
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems. NUCC Health Care Provider Taxonomy, code 111N00000X
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 | 1003653973 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jul 9, 2024 |
| Last updated | May 30, 2025 |
| Status | Active |
| Practice address |
11705 GRAVOIS RD Saint Louis, MO 63127 (314) 789-1484 |
| Other names |
Leong Chiropractic And Wellness 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 | 6 | 5 | 3 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 5 | 6 | 9 | 5 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.