Marie Sefton
NPI 1457750515 · Social Worker · Richmond, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marie Sefton is a Social Worker provider in Richmond, CA (NPI 1457750515).
Provider details
- NPI number
- 1457750515
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Social Worker1041C0700X
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Mailing address
Registry dates
- Enumerated
- 2014-08-14
- Last updated
- 2023-08-24
- Certified
- 2023-08-24
Frequently asked questions
- What is Marie Sefton's NPI number?
- Marie Sefton's National Provider Identifier (NPI) is 1457750515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marie Sefton's specialty?
- Marie Sefton is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Marie Sefton located?
- Marie Sefton's practice location on file with NPPES is 4300 Barrett Ave, Richmond, CA 94805-2356.
- What is Marie Sefton's phone number?
- The practice phone number listed in the NPPES registry for Marie Sefton is (925) 437-4938.
- Does Marie Sefton accept Medicare?
- Marie Sefton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marie Sefton's NPI active?
- Yes — Marie Sefton's NPI (1457750515) is active in the NPPES registry as of the last update on 2023-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.