Sheyla Monterroso
Sheyla Monterroso is a Peer Specialist in Tarzana, CA, registered under NPI 1003598590.
Getting there
Here is what surrounds this office in Tarzana, based on OpenStreetMap data collected Oct 9, 2026. Parking is available about 0.23 mi away. The nearest transit stop is 0.33 mi away, served by Reseda / Hatteras.
Getting here and what is nearby
Parking 966 ft ~4 min
Parking Orange Line Park & Ride - Reseda 0.20 mi ~4 min
Parking 0.23 mi ~5 min
Convenience Fancy Food 0.26 mi ~6 min
Gas station Arco 0.26 mi ~6 min
Transit Reseda / Oxnard (G Line) 0.27 mi ~6 min
Restaurant Corrientes 348 0.27 mi ~6 min
Transit Reseda / Oxnard (G Line) 0.29 mi ~6 min
Grocery Bazaar Market 0.30 mi ~6 min
6022 Reseda Boulevard, Tarzana 91356
Mo-Sa 09:00-20:30; Su 09:00-19:00
Restaurant Wingstop 0.31 mi ~7 min
Transit Reseda / Hatteras 0.33 mi ~7 min
Restaurant McDonald's 0.50 mi ~10 min
18510 Victory Boulevard, Tarzana 91335
Mo-Th 05:00-01:00; Fr-Sa 05:00-02:00; Su 05:00-01:00
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 | 1003598590 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 3, 2023 |
| Last updated | Dec 27, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
18700 OXNARD ST Tarzana, CA 91356 (818) 996-1051 |
| Mailing address |
10709 OVERMAN AVE Chatsworth, CA 91311 |
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 | 8 | 5 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 7 | 5 | 9 |
Sum = 60 · next multiple of 10 = 60 · 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.