Troy Marderosian
NPI 1669045043 · Marriage & Family Therapist · Los Angeles, CA
Troy Marderosian is a Marriage & Family Therapist provider in Los Angeles, CA (NPI 1669045043).
Provider details
- NPI number
- 1669045043
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
- Rehabilitation Practitioner225400000X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- 2021-07-22
- Last updated
- 2026-03-18
- Certified
- 2026-03-18
Frequently asked questions
- What is Troy Marderosian's NPI number?
- Troy Marderosian's National Provider Identifier (NPI) is 1669045043, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Troy Marderosian's specialty?
- Troy Marderosian is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Troy Marderosian located?
- Troy Marderosian's practice location on file with NPPES is 840 N Avenue 66, Los Angeles, CA 90042-1508.
- What is Troy Marderosian's phone number?
- The practice phone number listed in the NPPES registry for Troy Marderosian is (626) 395-7100.
- Is Troy Marderosian's NPI active?
- Yes — Troy Marderosian's NPI (1669045043) is active in the NPPES registry as of the last update on 2026-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.