STILL RIVER
NPI 1740929603
Social Worker - Clinical in Lewiston, ME
About Still River NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STILL RIVER (NPI 1740929603) is a healthcare organization registered as a clinical in Lewiston, Maine and active in the NPI registry since May 2022. The organization maintains 2 additional practice locations and lists Nathan Miller, Sole Proprietor, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 11
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Still River is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Still River, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Still River's NPI number?
The NPI number for Still River is 1740929603. It was assigned to this organization in the NPPES registry on May 31, 2022.
Where is Still River located?
Still River is located at 95 Park St Ste 201, Lewiston, ME 04240. The listed phone number is (207) 689-5362.
What is Still River's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Still River enrolled in Medicare?
Yes. Still River is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Still River?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Social Worker) reassigns their Medicare billing to Still River. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Still River was last updated on December 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Still River · NPI 1740929603
Clinical organization in Lewiston, Maine. Organization record, active in the CMS NPPES registry since May 31, 2022.
## Identity
- **NPI:** 1740929603 (Entity type: Organization)
- **Enumerated:** May 31, 2022
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **Organization subpart:** No
- **Authorized official:** Nathan Miller, SOLE PROPRIETOR
## Practice location
- **Address:** 95 PARK ST STE 201, Lewiston, ME 04240-7282
- **Phone:** (207) 689-5362
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Clinical Social Worker) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1740929603) · Data from the CMS NPPES public registry.