Madison Williams, MD
Madison Williams, MD is a Psychiatry Physician in Los Angeles, CA, registered under NPI 1003510124. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 Los Angeles, based on OpenStreetMap data collected Oct 2, 2026. Parking is available about 0.38 mi away. The nearest transit stop is 757 ft away, served by 120th & Compton.
Getting here and what is nearby
Transit King/Drew Medical Center 365 ft ~2 min
Transit King/Drew Medical Center 368 ft ~2 min
Transit 120th & Compton 757 ft ~3 min
Parking 713 ft ~3 min
Gas station Shell 1,001 ft ~4 min
Restaurant Subway 0.27 mi ~6 min
11812 Wilmington Avenue, Los Angeles 90059
Mo-Fr 07:30-21:00; Sa 08:00-21:00; Su 09:00-20:30
Restaurant KFC 0.27 mi ~6 min
Restaurant McDonald's 0.28 mi ~6 min
11800 Wilmington Avenue, Los Angeles 90059-3016
06:00-21:00
Parking Willowbrook Park And Ride 0.29 mi ~6 min
Ne & Sw Quads Of I-105 / Wilmington Ave Ic, Willowbrook 90059
Grocery Food 4 Less 0.34 mi ~7 min
Parking 0.38 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| PTL14174 | CA | Psychiatry Physician primary |
This provider holds licence PTL14174 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Psychiatry covers
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. NUCC Health Care Provider Taxonomy, code 2084P0800X
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 | |
|---|---|---|---|---|
| 2084P0800X | Psychiatry Physician Psychiatry | PTL14174 | CA | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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 | 1003510124 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 30, 2023 |
| Last updated | Jun 11, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MD |
| Practice address |
1731 E 120TH ST Los Angeles, CA 90059 (323) 563-4800 |
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 | 1 | 0 | 1 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 1 | 0 | 1 | 4 |
Sum = 36 · next multiple of 10 = 40 · check digit = 4 · actual last digit = 4
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.