IndividualActive
David Mallon, LCSW
NPI 1134327042 · Clinical Social Worker · Bellflower, CA
David Mallon, LCSW is a Clinical Social Worker provider in Bellflower, CA (NPI 1134327042).
Provider details
- NPI number
- 1134327042
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- LCS16358 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
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
9400 Rosecrans Ave
Bellflower, CA 90706-2246
Phone: (562) 461-3000
Fax: (626) 405-6768
Street-level locationGet directions
Mailing address
393 E Walnut St
Pasadena, CA 91188-0001
Registry dates
- Enumerated
- 2007-07-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Mallon's NPI number?
- David Mallon's National Provider Identifier (NPI) is 1134327042, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Mallon's specialty?
- David Mallon is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is David Mallon located?
- David Mallon's practice location on file with NPPES is 9400 Rosecrans Ave, Bellflower, CA 90706-2246.
- What is David Mallon's phone number?
- The practice phone number listed in the NPPES registry for David Mallon is (562) 461-3000.
- Is David Mallon's NPI active?
- Yes — David Mallon's NPI (1134327042) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.