Lydia Williams, M.D.
Lydia Williams, M.D. is a Plastic and Reconstructive Surgery Physician in Chicago, IL, registered under NPI 1720438559.
Getting there
The practice address on file is 5841 S MARYLAND AVE MC 6035, Chicago, IL 60637. 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 |
|---|---|---|
| 125.068869 | IL | Plastic and Reconstructive Surgery… primary |
This provider holds licence 125.068869 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 - Plastic And Reconstructive Surgery
- PAC ID
- 1456643022
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Maryland | I20231027000051 | Practitioner - Plastic And Reconstructive Surgery |
| District of Columbia | I20231030000122 | Practitioner - Plastic And Reconstructive Surgery |
| Virginia | I20231030003939 | Practitioner - Plastic And Reconstructive Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - Plastic And Reconstructive Surgery. There are 3 separate enrolment records across 3 states (MD, DC, VA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Plastic and Reconstructive Surgery covers
A surgeon who specializes in plastic and reconstructive surgery. NUCC Health Care Provider Taxonomy, code 2086S0122X
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 | 1720438559 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 13, 2016 |
| Last updated | Sep 18, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
5841 S MARYLAND AVE MC 6035 Chicago, IL 60637 (773) 702-6302 Fax (773) 702-1634 |
| Mailing address |
180 HARVESTER DR SUITE 110 Burr Ridge, IL 60527 |
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 | 7 | 2 | 0 | 4 | 3 | 8 | 5 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 4 | 0 | 8 | 3 | 7 | 5 | 1 |
Sum = 61 · next multiple of 10 = 70 · 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.