Richard Duarte, MS
Richard Duarte, MS is an Addiction (Substance Use Disorder) Counselor in Fresno, CA, registered under NPI 1003184664. 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 Fresno, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 1,030 ft away. The nearest transit stop is 0.34 mi away. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking 280 ft ~2 min
Parking 303 ft ~2 min
Parking 1,030 ft ~4 min
Transit 0.28 mi ~6 min
Restaurant Michoacan Meat Market 0.30 mi ~6 min
508 North Van Ness North Van Ness Avenue, Fresno 93728
Transit 0.33 mi ~7 min
Transit 0.34 mi ~7 min
Gas station Chevron 0.39 mi ~8 min
Restaurant El Patio 0.48 mi ~10 min
552 East Olive Avenue, Fresno 93728
Mo-Th 11:00-19:30; Fr-Sa 11:00-20:30; Su 10:00-18:00
Coffee Component Coffee 0.49 mi ~10 min
620 East Olive Avenue, Fresno 93728
Mo-Su 07:00-17:00
Restaurant Aromas 0.49 mi ~10 min
568 East Olive Avenue, Fresno 93728
Mo-Su 08:00-16:00
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 |
|---|---|---|
| 8879 | CA | Addiction (Substance Use Disorder)… primary |
This provider holds licence 8879 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 | 1003184664 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 9, 2011 |
| Last updated | Jun 2, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MS |
| Practice address |
611 E BELMONT AVE Fresno, CA 93701 (559) 237-3420 |
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 | 8 | 4 | 6 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 8 | 6 | 3 |
Sum = 56 · next multiple of 10 = 60 · 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.