Casandra Madrigal
Casandra Madrigal is a Peer Specialist in Concord, CA, registered under NPI 1003595265.
Getting there
Here is what surrounds this office in Concord, based on OpenStreetMap data collected Oct 9, 2026. Parking is available about 0.23 mi away. There is EV charging 0.41 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.26 mi away, served by Olivera Road & Hillsborough Drive.
Getting here and what is nearby
Parking 637 ft ~3 min
Transit Olivera Road & Northwood Drive 801 ft ~4 min
Transit Olivera Road & Grant Street 818 ft ~4 min
Parking 0.20 mi ~4 min
Parking 0.23 mi ~5 min
Transit Olivera Road & Hillsborough Drive 0.26 mi ~6 min
EV charging 0.41 mi ~9 min
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 | 1003595265 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 14, 2023 |
| Last updated | Jul 14, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
3370 NORTHWOOD DR UNIT G Concord, CA 94520 (925) 496-8227 |
| Mailing address |
1727 MLK JR WAY STE 109 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 | 5 | 9 | 5 | 2 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 1 | 2 | 3 |
Sum = 45 · next multiple of 10 = 50 · check digit = 5 · actual last digit = 5
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.