Darryl Johnson
Darryl Johnson is a Peer Specialist in San Leandro, CA, registered under NPI 1003704040.
Getting there
Here is what surrounds this office in San Leandro, based on OpenStreetMap data collected Oct 18, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. The nearest transit stop is 0.21 mi away, served by Monarch Bay Drive & Mulford Point Drive.
Getting here and what is nearby
Transit Marina Boulevard & Neptune Drive 458 ft ~2 min
Transit Monarch Bay Drive & Neptune Drive 572 ft ~3 min
Transit Monarch Bay Drive & Mulford Point Drive 0.21 mi ~5 min
Restaurant El Torito 0.21 mi ~5 min
Restaurant Horatio's 0.29 mi ~6 min
60 Monarch Bay Drive
Hotel The Marina Inn on San Francisco Bay 0.36 mi ~8 min
68 Monarch Bay Drive, San Leandro 94577
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Peer Specialist covers
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority. NUCC Health Care Provider Taxonomy, code 175T00000X
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 | 1003704040 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 26, 2025 |
| Last updated | Jun 26, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
13095 NEPTUNE DR San Leandro, CA 94577 (510) 300-3500 |
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 | 7 | 0 | 4 | 0 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 0 | 8 | 0 | 8 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.