HANNAH WILLIAMS
NPI 1861997884
Social Worker in South Portland, ME
About Hannah Williams NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HANNAH WILLIAMS (NPI 1861997884) is an individual social worker in South Portland, Maine, licensed in Maine (LC5560) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Hannah Williams 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 Hannah Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saco, ME 04072
- Reassigned Medicare billing, Maine enrollment
- 200 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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Hannah Williams's NPI number?
The NPI number for Hannah Williams is 1861997884. It was assigned to this individual provider in the NPPES registry on March 30, 2018.
Where is Hannah Williams located?
Hannah Williams practices at 50 Lydia Ln, South Portland, ME 04106. The listed phone number is (207) 523-5036.
What is Hannah Williams's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Hannah Williams enrolled in Medicare?
Yes. Hannah Williams 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 Hannah Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hannah Williams reassigns Medicare benefits to Sweetser (Saco, ME). 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 Hannah Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Hannah Williams was last updated on March 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.
# Hannah Williams · NPI 1861997884
Social Worker provider in South Portland, Maine. Individual provider, active in the CMS NPPES registry since March 30, 2018.
## Identity
- **NPI:** 1861997884 (Entity type: Individual)
- **Enumerated:** March 30, 2018
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** LC5560 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 50 LYDIA LN, South Portland, ME 04106-2156
- **Phone:** (207) 523-5036
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Sweetser (NPI 1538122445, Saco, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** March 30, 2018
- **Other identifiers:** Other LC5560 (ME)
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Source: [NPI Profile](https://npiprofile.com/npi/1861997884) · Data from the CMS NPPES public registry.