MARIE JEAN SEFTON
NPI 1457750515
Social Worker in Richmond, CA
About Marie Jean Sefton NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIE JEAN SEFTON (NPI 1457750515) is an individual social worker in Richmond, California, licensed in California (95308) and active in the NPI registry since August 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marie Jean Sefton is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marie Sefton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 3,139 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.
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 Marie Sefton's NPI number?
The NPI number for Marie Sefton is 1457750515. It was assigned to this individual provider in the NPPES registry on August 14, 2014.
Where is Marie Sefton located?
Marie Sefton practices at 4300 Barrett Ave, Richmond, CA 94805. The listed phone number is (925) 437-4938.
What is Marie Sefton's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Marie Sefton enrolled in Medicare?
Yes. Marie Sefton is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marie Sefton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marie Sefton reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, CA). 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 Marie Sefton'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 Marie Sefton was last updated on August 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Marie Jean Sefton · NPI 1457750515
Social Worker provider in Richmond, California. Individual provider, active in the CMS NPPES registry since August 14, 2014.
## Identity
- **NPI:** 1457750515 (Entity type: Individual)
- **Enumerated:** August 14, 2014
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 95308 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4300 BARRETT AVE, Richmond, CA 94805-2356
- **Phone:** (925) 437-4938
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Grow Healthcare Group PC (NPI 1154994846, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** August 24, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1457750515) · Data from the CMS NPPES public registry.