William Demarzo
NPI 1265910582 · Hearing Instrument Specialist · Emerson, NJ
William Demarzo is a Hearing Instrument Specialist provider in Emerson, NJ (NPI 1265910582).
Provider details
- NPI number
- 1265910582
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 25MG000995000 (NJ)
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
7 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
- 2018-07-30
- Last updated
- 2018-07-30
Frequently asked questions
- What is William Demarzo's NPI number?
- William Demarzo's National Provider Identifier (NPI) is 1265910582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Demarzo's specialty?
- William Demarzo is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is William Demarzo located?
- William Demarzo's practice location on file with NPPES is 181 Kinderkamack Rd, Emerson, NJ 07630-1830.
- What is William Demarzo's phone number?
- The practice phone number listed in the NPPES registry for William Demarzo is (201) 986-0055.
- Is William Demarzo's NPI active?
- Yes — William Demarzo's NPI (1265910582) is active in the NPPES registry as of the last update on 2018-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.