Sheila Hammer, M.S.W., A.S.W.
Sheila Hammer, M.S.W., A.S.W. is a provider specialising in Social Worker in Glendale, CA, registered under NPI 1003140534. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Glendale, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 0.34 mi away. The nearest transit stop is 353 ft away, served by Chevy Chase & Central. A pharmacy sits 0.39 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 591 ft away.
Getting here and what is nearby
Transit Central & Chevy Chase 214 ft ~1 min
Transit Central & Chevy Chase 298 ft ~2 min
Transit Chevy Chase & Central 353 ft ~2 min
Coffee Starbucks 591 ft ~3 min
Restaurant Taco Bell 581 ft ~3 min
Parking 0.20 mi ~5 min
Parking 0.20 mi ~5 min
Restaurant El Sauz 0.20 mi ~5 min
4432 San Fernando Road
Gas station Mobil 0.23 mi ~5 min
Restaurant Domino's 0.23 mi ~5 min
723 South Central Avenue, Glendale 91204
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Grocery Vons 0.27 mi ~6 min
Grocery Mas Market 0.28 mi ~6 min
Gas station Mobil 0.31 mi ~7 min
Parking 0.34 mi ~7 min
719 South Brand Boulevard
Convenience 7-Eleven 0.36 mi ~8 min
Pharmacy CVS Pharmacy 0.39 mi ~8 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 |
|---|---|---|
| 26298 | CA | Social Worker primary |
This provider holds licence 26298 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 | 1003140534 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 30, 2009 |
| Last updated | Sep 30, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.S.W., A.S.W. |
| Practice address |
318 W CHEVY CHASE DR 205 Glendale, CA 91204 (559) 362-2989 |
| Mailing address |
PO BOX 921485 Sylmar, CA 91392 |
| Other names |
Sheila Hallstrom Former Legal Business Name |
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 | 1 | 4 | 0 | 5 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 4 | 0 | 5 | 6 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.