Mark Overton
Mark Overton is a Rehabilitation Practitioner in Los Angeles, CA, registered under NPI 1003044124. 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 Sep 1, 2026. Parking is available about 0.26 mi away. The nearest transit stop is 561 ft away, served by Western & 38th Place.
Getting here and what is nearby
Transit Western & 39th 113 ft ~1 min
Transit Western & 39th 233 ft ~1 min
Parking 458 ft ~2 min
Transit Western & 38th Place 561 ft ~3 min
Convenience Food Mart 768 ft ~3 min
Restaurant Fuegos 895 ft ~4 min
3957 South Western Avenue, 90062
Fr-Sa 09:00-23:00; Su 09:30-15:30; Tu-We 09:00-19:00; Th 09:00-21:30
Restaurant Jack's Family Kitchen 962 ft ~4 min
3965 South Western Avenue, Los Angeles 90062
Mo 06:00-13:30; Tu 06:00-14:30; Th-Su 06:00-14:30
Gas station 76 0.20 mi ~5 min
Parking 0.25 mi ~5 min
Parking 0.26 mi ~6 min
Restaurant Subway 0.27 mi ~6 min
3991 South Western Avenue, Los Angeles 90062
Mo-Fr 07:00-21:00; Sa-Su 08:00-21:00
Hotel Americas Best Value Inn & Suites Los Angeles Downtown SW 0.49 mi ~10 min
4122 South Western Avenue, Los Angeles 90062
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 Rehabilitation Practitioner covers
A health care practitioner who trains or retrains individuals disabled by disease or injury to help them attain their maximum functional capacity. NUCC Health Care Provider Taxonomy, code 225400000X
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 | 1003044124 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 26, 2009 |
| Last updated | Jun 26, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
3881 S WESTERN AVE Los Angeles, CA 90062 (323) 290-4374 |
| Mailing address |
1201 E 7TH ST RM APT216 Los Angeles, CA 90021 |
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 | 0 | 4 | 4 | 1 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 8 | 1 | 4 |
Sum = 46 · next multiple of 10 = 50 · 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.