What is Margaret Hammes's NPI number?

Margaret Hammes's National Provider Identifier (NPI) is 1144497405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Margaret Hammes's specialty?

Margaret Hammes is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Margaret Hammes located?

Margaret Hammes's practice location on file with NPPES is 314 W. Main St., Decorah, IA 52101.

What is Margaret Hammes's phone number?

The practice phone number listed in the NPPES registry for Margaret Hammes is (563) 387-7433.

Is Margaret Hammes's NPI active?

Yes — Margaret Hammes's NPI (1144497405) is active in the NPPES registry as of the last update on 2025-01-22.

IndividualActive

Margaret Hammes, MSW LISW

NPI 1144497405 · Clinical Social Worker · Decorah, IA

Margaret Hammes, MSW LISW is a Clinical Social Worker provider in Decorah, IA (NPI 1144497405).

Provider details

NPI number: 1144497405
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: MSW LISW
Sex: Female
Sole proprietor: Yes
License: 11031-123 (WI)

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense 007383 (IA)
Behavioral Health & Social Service Providers
Clinical Social Worker1041C0700XLicense 11031-123 (WI)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(92/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
18 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
2 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

314 W. Main St.

Decorah, IA 52101

Phone: (563) 387-7433

Street-level locationGet directions

More IA providers

Mailing address

411 N. Jefferson

Calmar, IA 52132

Additional practice locations (1)

6414 S Howell Ave Ste B
Oak Creek, WI 53154-1104
Phone: (563) 387-7433
Fax: (563) 387-2662

Enumerated: 2008-05-14
Last updated: 2025-01-22
Certified: 2025-01-22

Frequently asked questions

What is Margaret Hammes's NPI number?: Margaret Hammes's National Provider Identifier (NPI) is 1144497405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Margaret Hammes's specialty?: Margaret Hammes is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Margaret Hammes located?: Margaret Hammes's practice location on file with NPPES is 314 W. Main St., Decorah, IA 52101.
What is Margaret Hammes's phone number?: The practice phone number listed in the NPPES registry for Margaret Hammes is (563) 387-7433.
Is Margaret Hammes's NPI active?: Yes — Margaret Hammes's NPI (1144497405) is active in the NPPES registry as of the last update on 2025-01-22.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.