Mariana Gumm, ASW
Mariana Gumm, ASW is a provider specialising in Social Worker in Livingston, CA, registered under NPI 1003209826.
Getting there
Here is what surrounds this office in Livingston, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.38 mi away. The nearest transit stop is 0.28 mi away, served by Park Street @ 7th Street (Westbound). A pharmacy sits 0.39 mi from the entrance (Rite Aid), which helps if you leave with a prescription.
Getting here and what is nearby
Transit Main Street @ Park Street (Southbound) 539 ft ~3 min
Restaurant Taqueria 656 ft ~3 min
1507 Park Street, Livingston 95334
Parking 0.24 mi ~5 min
Transit F Street @ 6th Street (Eastbound) 0.27 mi ~6 min
Transit Park Street @ 7th Street (Westbound) 0.28 mi ~6 min
Restaurant Las Morelianas 0.30 mi ~6 min
1448 D Street, Livingston 95334
Parking 0.36 mi ~8 min
Grocery Value Market 0.36 mi ~8 min
1724 Main Street, Livingston 95334
Convenience Fortunas' Tortillas 0.38 mi ~8 min
1425 C Street, Livingston 95334
Parking 0.38 mi ~8 min
Pharmacy Rite Aid 0.39 mi ~8 min
Restaurant Punjab Sweets & Catering 0.44 mi ~9 min
436 Main Street, Livingston 95334
Grocery Liberty Market 0.46 mi ~10 min
Grocery Fiesta Supermarket 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 |
|---|---|---|
| 61321 | CA | Social Worker primary |
This provider holds licence 61321 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 Social Worker covers
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
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 | 1003209826 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 18, 2015 |
| Last updated | Mar 18, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | ASW |
| Practice address |
1140 MAIN ST Livingston, CA 95334 (209) 394-7913 Fax (209) 394-3660 |
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 | 2 | 0 | 9 | 8 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 9 | 8 | 4 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.