Michelle Ortiz
Michelle Ortiz is an Addiction (Substance Use Disorder) Counselor in Vallejo, CA, registered under NPI 1003550518. 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 Vallejo, based on OpenStreetMap data collected Oct 5, 2026. Parking is available about 960 ft away. There is EV charging 0.39 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 793 ft away, served by Mare Island Way & Florida Street. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
Transit Mare Island Way & Harbor Way 370 ft ~2 min
Transit Mare Island Way & Harbor Way 452 ft ~2 min
Parking 609 ft ~3 min
Transit Mare Island Way & Florida Street 793 ft ~4 min
Parking 918 ft ~4 min
Parking 960 ft ~4 min
Restaurant Five Star Chicken 0.22 mi ~5 min
24 Tennessee Street, Vallejo 94590
Restaurant Napoli Pizzeria & Italian Food 0.29 mi ~6 min
Restaurant Napoli pizza & Italian 0.29 mi ~6 min
EV charging 0.39 mi ~8 min
Coffee Sardine Can 0.42 mi ~9 min
Coffee Panama Bay Coffee Co. 0.47 mi ~10 min
Mo-Fr 05:00-18:00; Sa-Su 07:00-17:00
Coffee Mare Island Brewing Company 0.47 mi ~10 min
Convenience Okbah Grocery Shop 0.48 mi ~10 min
Convenience Okbah Grocery Shop 0.48 mi ~10 min
Marin Street
Convenience Okbah Groceries 0.48 mi ~10 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 |
|---|---|---|
| R1443050821 | CA | Addiction (Substance Use Disorder)… primary |
This provider holds licence R1443050821 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 | 1003550518 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 21, 2022 |
| Last updated | Apr 21, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
126 OHIO ST Vallejo, CA 94590 (415) 707-2577 Fax (707) 644-5501 |
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 | 5 | 0 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 5 | 0 | 5 | 2 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.