Michael Marderosian
NPI 1023249356 · Hearing Instrument Specialist · Northridge, CA
Michael Marderosian is a Hearing Instrument Specialist provider in Northridge, CA (NPI 1023249356).
Provider details
- NPI number
- 1023249356
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- HA7446 (CA)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-08-04
- Last updated
- 2009-08-04
Frequently asked questions
- What is Michael Marderosian's NPI number?
- Michael Marderosian's National Provider Identifier (NPI) is 1023249356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Marderosian's specialty?
- Michael Marderosian is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is Michael Marderosian located?
- Michael Marderosian's practice location on file with NPPES is 1000 Northridge Fashion Ctr, Northridge, CA 91324.
- What is Michael Marderosian's phone number?
- The practice phone number listed in the NPPES registry for Michael Marderosian is (818) 885-1938.
- Is Michael Marderosian's NPI active?
- Yes — Michael Marderosian's NPI (1023249356) is active in the NPPES registry as of the last update on 2009-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.