Greg Roussett, NP
Greg Roussett, NP is a Psychiatric/Mental Health Nurse Practitioner in San Francisco, CA, registered under NPI 1003114372.
Getting there
Here is what surrounds this office in San Francisco, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 669 ft away at Mason O'Farrell Garage. The nearest transit stop is 437 ft away, served by Sutter Street & Powell Street. A pharmacy sits 0.40 mi from the entrance (Clay Medical Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 355 ft away.
Getting here and what is nearby
Coffee Café Encore 17 ft ~1 min
488 Post Street
Coffee Cafe La Tazita 72 ft ~1 min
470 Post Street, San Francisco 94102
Su 08:30-14:30; Mo-Sa 07:30-14:30
Parking 107 ft ~1 min
490 Post Street, San Francisco
Convenience Mason Liquor & Deli 164 ft ~1 min
530 Mason Street
Fr 10:00-24:00; Mo-Th 10:00-22:00; Sa 15:00-24:00; Su off
Hotel Kensington Park Hotel 150 ft ~1 min
450;452;454;456;460 Post Street
Restaurant Ula 151 ft ~1 min
Transit Big Bus Tours Stop 16, Union Square North 209 ft ~1 min
Hotel JW Marriott 198 ft ~1 min
515 Mason Street, San Francisco 94102
Hotel The Donatello 218 ft ~1 min
501 Post Street, San Francisco 94102
Restaurant Akiko's Sushi Bar 196 ft ~1 min
542 Mason Street, San Francisco 94102
11:00-14:45,16:15-22:00
Convenience MMC Wine & Spirit 332 ft ~2 min
Restaurant Cesario's 299 ft ~2 min
Transit Sutter Street & Mason Street 385 ft ~2 min
Coffee Bluestone Lane 355 ft ~2 min
562 Sutter Street, San Francisco 94102
Mo-Su 07:00-15:00
Convenience 7-Eleven 365 ft ~2 min
Transit Sutter Street & Powell Street 437 ft ~2 min
Parking 448 ft ~2 min
663;665;679 Sutter Street
Pharmacy Walgreens 439 ft ~2 min
Parking Mason O'Farrell Garage 669 ft ~3 min
325 Mason Street, 94102
Pharmacy Four-Fifty Sutter Pharmacy 775 ft ~3 min
Grocery Trader Joe's 0.30 mi ~7 min
Grocery Sutter Fine Foods 0.37 mi ~8 min
Pharmacy Clay Medical Pharmacy 0.40 mi ~9 min
929 Clay Street, San Francisco
Grocery Le Beau Market 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 |
|---|---|---|
| 20112 | CA | Psychiatric/Mental Health Nurse… primary |
This provider holds licence 20112 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 Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0808X
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 | 1003114372 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 10, 2011 |
| Last updated | Sep 10, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | NP |
| Practice address |
490 POST ST San Francisco, CA 94102 (415) 296-5290 |
| Mailing address |
525 21ST ST Oakland, CA 94612 |
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 | 1 | 4 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 1 | 8 | 3 | 5 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.