Alan Johnstone, FNP
Alan Johnstone, FNP is a Family Nurse Practitioner in San Francisco, CA, registered under NPI 1003307927.
Getting there
Here is what surrounds this office in San Francisco, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.25 mi away. There is EV charging 0.22 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.46 mi away, served by Salesforce Transit Center Bay 5. A pharmacy sits 0.46 mi from the entrance (Clay Medical Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 412 ft away.
Getting here and what is nearby
Restaurant The Third Floor 158 ft ~1 min
433 Clay Street
Restaurant Fish & Farm 227 ft ~1 min
Hotel The Jay, Autograph Collection 271 ft ~2 min
Hotel Club Quarters Hotel, San Francisco, Embarcadero 273 ft ~2 min
Restaurant Ladle & Leaf 296 ft ~2 min
Coffee Il Canto Cafe 356 ft ~2 min
Coffee Lou's Sandwiches Cafe 375 ft ~2 min
Coffee Homegrown 412 ft ~2 min
222 Battery Street, San Francisco 94111
Parking 822 ft ~4 min
19:00-07:00
Grocery Safeway 870 ft ~4 min
145 Jackson Street, San Francisco 94111
06:00-21:00
Convenience 7-Eleven 947 ft ~4 min
Hotel Balmoral Hotel North # 3 0.21 mi ~5 min
640 Clay Street, San Francisco 94111
EV charging 0.22 mi ~5 min
Parking 0.23 mi ~5 min
350 Pacific Avenue
Pharmacy Walgreens 0.23 mi ~5 min
300 Montgomery Street, San Francisco 94104
Mo-Fr 09:00-13:30,14:00-19:00
Convenience Russell’s 0.25 mi ~6 min
333 Market Street, San Francisco
Parking 0.25 mi ~6 min
825 Sansome Street, San Francisco 94113
Convenience Charming Sun Market Inc 0.32 mi ~7 min
49 Walter U. Lum Place
Pharmacy Walgreens 0.35 mi ~8 min
456 Mission Street, San Francisco 94105
Mo-Fr 09:00-13:30,14:00-19:00
Grocery Ha Mini Mart 0.35 mi ~8 min
Transit Salesforce Transit Center Bay 9 0.45 mi ~9 min
Transit Salesforce Transit Center Bay 7 0.45 mi ~10 min
Transit Salesforce Transit Center Bay 5 0.46 mi ~10 min
Pharmacy Clay Medical Pharmacy 0.46 mi ~10 min
929 Clay Street, San Francisco
Grocery New Asia Market 0.46 mi ~10 min
772 Pacific Avenue, 94133
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 |
|---|---|---|
| 95009541 | CA | Family Nurse Practitioner primary |
This provider holds licence 95009541 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 Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003307927 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 26, 2018 |
| Last updated | Mar 12, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | FNP |
| Practice address |
1 EMBARCADERO CTR STE 1900 San Francisco, CA 94111 (415) 658-6791 |
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 | 3 | 0 | 7 | 9 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 0 | 5 | 9 | 4 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.