Gary Williams, D.P.M.
Gary Williams, D.P.M. is a provider specialising in Foot Surgery Podiatrist in Chicago, IL, registered under NPI 1396711073. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 6307 S STEWART AVE STE 202, Chicago, IL 60621. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 016004979 | IL | Foot Surgery Podiatrist primary |
| 016004979 | IL | Podiatrist |
This provider holds licence 016004979 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Podiatry
- PAC ID
- 4587692496
Medicare enrolment is recorded as approved under the provider type Practitioner - Podiatry. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Foot Surgery covers
Definition to come... NUCC Health Care Provider Taxonomy, code 213ES0131X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 213ES0131X | Foot Surgery Podiatrist Foot Surgery | 016004979 | IL | primary |
| 213E00000X | Podiatrist | 016004979 | IL |
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 | 1396711073 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 23, 2006 |
| Last updated | May 21, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | D.P.M. |
| Practice address |
6307 S STEWART AVE STE 202 Chicago, IL 60621 (708) 444-4114 Fax (708) 403-9229 |
| Mailing address |
13929 APACHE LN Orland Park, IL 60462 |
| Other identifiers |
016004979
(IL) |
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 | 3 | 9 | 6 | 7 | 1 | 1 | 0 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 9 | 6 | 5 | 1 | 2 | 0 | 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.