Amy Hammerstrom, LMSW
Amy Hammerstrom, LMSW is a provider specialising in Clinical Social Worker in Sioux City, IA, registered under NPI 1003103169. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Sioux City, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 865 ft away at Discovery Parking. A pharmacy sits 0.33 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Restaurant Pete’s Thai on 5th 56 ft ~1 min
507 5th Street, Sioux City 51101
Mo-Fr 10:00-21:05; Sa 11:00-21:05
Parking Martin Luther King Jr. Transportation Center 213 ft ~1 min
Coffee Coffee & Purrs 342 ft ~2 min
Restaurant Trattoria Fresco 421 ft ~2 min
Restaurant Brightside Cafe 464 ft ~2 min
528 Pierce Street
Parking River's Landing Parking 726 ft ~3 min
Hotel Sioux City Hotel 864 ft ~4 min
Parking Discovery Parking 865 ft ~4 min
Grocery Tropical Grocery Store 0.20 mi ~4 min
303 7th Street, Sioux City 51101
Grocery Red Valley Natural Foods 0.25 mi ~5 min
600 Water Street, Sioux City 51103
Mo-Fr 10:00-19:00; Sa 09:00-17:00
Hotel Hard Rock Hotel Sioux City 0.30 mi ~6 min
111 3rd Street, Sioux City 51103
Hotel Ramada Sioux City 0.31 mi ~7 min
Pharmacy Walgreens 0.33 mi ~7 min
Coffee Jitters 0.38 mi ~8 min
Coffee Scooter's Coffee 0.39 mi ~8 min
675 Gordon Drive, Sioux City
Grocery Great Wall Oriental Food Store 0.41 mi ~9 min
405 Perry Street, Sioux City 51103
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 |
|---|---|---|
| 04893 | IA | Clinical Social Worker primary |
| 04893 | IA | Social Worker |
This provider holds licence 04893 issued in IA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Social Worker
- PAC ID
- 5496039281
- Enrollment ID
- I20170222001564
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Social Worker. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1041C0700X | Clinical Social Worker Clinical | 04893 | IA | primary |
| 104100000X | Social Worker | 04893 | IA |
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 | 1003103169 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 8, 2011 |
| Last updated | Sep 25, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LMSW |
| Practice address |
505 5TH ST STE 615 Sioux City, IA 51101 (712) 251-5962 |
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 | 0 | 3 | 1 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 6 | 1 | 3 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.