MS. AMY MARIE HAMMERSTROM LMSW
NPI 1003103169
Social Worker - Clinical in Sioux City, IA
About Ms. Amy Marie Hammerstrom Lmsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. AMY MARIE HAMMERSTROM LMSW (NPI 1003103169) is an individual clinical provider in Sioux City, Iowa, licensed in Iowa (04893) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Amy Marie Hammerstrom Lmsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Amy Hammerstrom reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sioux City, IA 51101
- Reassigned Medicare billing, Iowa enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 51101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SIOUX CITY, IA 51101
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Amy Hammerstrom's NPI number?
The NPI number for Amy Hammerstrom is 1003103169. It was assigned to this individual provider in the NPPES registry on July 8, 2011.
Where is Amy Hammerstrom located?
Amy Hammerstrom practices at 505 5th St Ste 615, Sioux City, IA 51101. The listed phone number is (712) 251-5962.
What is Amy Hammerstrom's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Amy Hammerstrom enrolled in Medicare?
Yes. Amy Hammerstrom is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Amy Hammerstrom's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amy Hammerstrom reassigns Medicare benefits to Aha Wellness, LLC (Sioux City, IA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Amy Hammerstrom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Amy Hammerstrom accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 4 other insurers list Amy Hammerstrom as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Amy Hammerstrom was last updated on September 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Amy Marie Hammerstrom, LMSW · NPI 1003103169
Clinical provider in Sioux City, Iowa. Individual provider, active in the CMS NPPES registry since July 8, 2011.
## Identity
- **NPI:** 1003103169 (Entity type: Individual)
- **Enumerated:** July 8, 2011
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 04893 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 5TH ST STE 615, Sioux City, IA 51101-1505
- **Phone:** (712) 251-5962
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Aha Wellness, LLC (NPI 1821818279, Sioux City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 2011
## Record status
- **NPPES last updated:** September 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003103169) · Data from the CMS NPPES public registry.