Margaret Mullen
NPI 1023393683 · Clinical Social Worker · Richmond, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Mullen is a Clinical Social Worker provider in Richmond, CA (NPI 1023393683).
Provider details
- NPI number
- 1023393683
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 71768 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2011-10-14
- Last updated
- 2022-02-11
Frequently asked questions
- What is Margaret Mullen's NPI number?
- Margaret Mullen's National Provider Identifier (NPI) is 1023393683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Mullen's specialty?
- Margaret Mullen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Margaret Mullen located?
- Margaret Mullen's practice location on file with NPPES is 901 Nevin Ave, Richmond, CA 94801-3143.
- What is Margaret Mullen's phone number?
- The practice phone number listed in the NPPES registry for Margaret Mullen is (510) 307-1771.
- Does Margaret Mullen accept Medicare?
- Margaret Mullen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Mullen's NPI active?
- Yes — Margaret Mullen's NPI (1023393683) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.