Mary Best, LCSW
NPI 1447420609 · Clinical Social Worker · Twentynine Palms, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Best, LCSW is a Clinical Social Worker provider in Twentynine Palms, CA (NPI 1447420609).
Provider details
- NPI number
- 1447420609
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 10041 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
18 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
- 2008-03-04
- Last updated
- 2016-03-31
Frequently asked questions
- What is Mary Best's NPI number?
- Mary Best's National Provider Identifier (NPI) is 1447420609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Best's specialty?
- Mary Best is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Best located?
- Mary Best's practice location on file with NPPES is 5430 Jade Lane, Twentynine Palms, CA 92277.
- What is Mary Best's phone number?
- The practice phone number listed in the NPPES registry for Mary Best is (301) 538-7549.
- Does Mary Best accept Medicare?
- Mary Best is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Best's NPI active?
- Yes — Mary Best's NPI (1447420609) is active in the NPPES registry as of the last update on 2016-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.