Richard Thomas
Richard Thomas is an Addiction (Substance Use Disorder) Counselor in Compton, CA, registered under NPI 1003190943. 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 Compton, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 594 ft away. 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 201 ft ~1 min
Restaurant Alma's Cookies & Company Restaurant 199 ft ~1 min
Restaurant Popeyes 385 ft ~2 min
300 West Compton Boulevard, Compton 90220
10:00-21:00
Parking 497 ft ~2 min
Parking 594 ft ~3 min
Convenience Chevron 896 ft ~4 min
Restaurant McDonald's 891 ft ~4 min
101 South Compton, Compton 90220
Mo-Su 06:00-19:30
Gas station Chevron 994 ft ~4 min
Grocery Superior Grocers 0.28 mi ~6 min
Pharmacy CVS Pharmacy 0.37 mi ~8 min
Grocery Smart & Final Extra! 0.42 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
| Licence | State | Specialty |
|---|---|---|
| RW4404 | CA | Addiction (Substance Use Disorder)… primary |
This provider holds licence RW4404 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 Addiction (Substance Use Disorder) covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YA0400X
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 | 1003190943 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 10, 2011 |
| Last updated | Oct 10, 2011 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
369 W COMPTON BLVD Compton, CA 90220 (310) 603-6555 Fax (310) 603-6565 |
| Mailing address |
323 W 4TH ST Long Beach, CA 90802 |
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 | 1 | 9 | 0 | 9 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 9 | 0 | 9 | 8 |
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.