CARLTON SOPER
NPI 1184661902
Social Worker - Clinical in Northampton, MA
About Carlton Soper NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CARLTON SOPER (NPI 1184661902) is an individual clinical provider in Northampton, Massachusetts, licensed in Massachusetts (1027671) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses
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
Carlton Soper 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 Reassignments
2Medicare enrollment records show Carlton Soper reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Northampton, MA 01060
- Reassigned Medicare billing, Massachusetts enrollment
- 64 clinicians in this Medicare group
Holyoke, MA 01040
- Reassigned Medicare billing, Massachusetts enrollment
- 144 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01060 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORTHAMPTON, MA 01060
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 Carlton Soper's NPI number?
The NPI number for Carlton Soper is 1184661902. It was assigned to this individual provider in the NPPES registry on June 1, 2006.
Where is Carlton Soper located?
Carlton Soper practices at 50 Pleasant St, Northampton, MA 01060. The listed phone number is (413) 584-6855.
What is Carlton Soper's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Carlton Soper enrolled in Medicare?
Yes. Carlton Soper 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 organizations bill Medicare for Carlton Soper's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carlton Soper reassigns Medicare benefits to 2 organizations: Servicenet Inc (Northampton, MA) and River Valley Counseling Center, Inc (Holyoke, MA). Each 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 Carlton Soper'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 Carlton Soper was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Carlton Soper · NPI 1184661902
Clinical provider in Northampton, Massachusetts. Individual provider, active in the CMS NPPES registry since June 1, 2006.
## Identity
- **NPI:** 1184661902 (Entity type: Individual)
- **Enumerated:** June 1, 2006
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 1027671 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 50 PLEASANT ST, Northampton, MA 01060-3909
- **Phone:** (413) 584-6855 · **Fax:** (413) 585-1376
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Servicenet Inc (NPI 1659314425, Northampton, MA); River Valley Counseling Center, Inc (NPI 1851444616, Holyoke, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1184661902) · Data from the CMS NPPES public registry.