IndividualActive
Mark Lopez, MSW
NPI 1538469937 · Social Worker · Altadena, CA
Mark Lopez, MSW is a Social Worker provider in Altadena, CA (NPI 1538469937).
Provider details
- NPI number
- 1538469937
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Male
- Sole proprietor
- No
- License
- ASW28964 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(82/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
2933 El Nido Dr
Altadena, CA 91001-4529
Phone: (626) 395-7100
Street-level locationGet directions
Mailing address
3710 Mayfair Dr
Pasadena, CA 91107-2214
Registry dates
- Enumerated
- 2010-11-01
- Last updated
- 2014-06-09
Frequently asked questions
- What is Mark Lopez's NPI number?
- Mark Lopez's National Provider Identifier (NPI) is 1538469937, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lopez's specialty?
- Mark Lopez is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Lopez located?
- Mark Lopez's practice location on file with NPPES is 2933 El Nido Dr, Altadena, CA 91001-4529.
- What is Mark Lopez's phone number?
- The practice phone number listed in the NPPES registry for Mark Lopez is (626) 395-7100.
- Is Mark Lopez's NPI active?
- Yes — Mark Lopez's NPI (1538469937) is active in the NPPES registry as of the last update on 2014-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.