Margaret Zadnik, DDS
NPI 1033431598 · Orthodontics and Dentofacial Orthopedics Dentistry · Islip, NY
Margaret Zadnik, DDS is a Orthodontics and Dentofacial Orthopedics Dentistry provider in Islip, NY (NPI 1033431598).
Provider details
- NPI number
- 1033431598
- Entity type
- Individual
- Primary specialty
- Orthodontics and Dentofacial Orthopedics DentistryDental Providers
- Credential
- DDS
- Sex
- Female
- Sole proprietor
- Yes
- License
- 046114 (NY)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-02-24
- Last updated
- 2010-02-24
Frequently asked questions
- What is Margaret Zadnik's NPI number?
- Margaret Zadnik's National Provider Identifier (NPI) is 1033431598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Zadnik's specialty?
- Margaret Zadnik is listed in the NPPES registry with a primary specialty of Orthodontics and Dentofacial Orthopedics Dentistry (Dental Providers).
- Where is Margaret Zadnik located?
- Margaret Zadnik's practice location on file with NPPES is 439 Main St, Islip, NY 11751-3538.
- What is Margaret Zadnik's phone number?
- The practice phone number listed in the NPPES registry for Margaret Zadnik is (631) 581-1150.
- Is Margaret Zadnik's NPI active?
- Yes — Margaret Zadnik's NPI (1033431598) is active in the NPPES registry as of the last update on 2010-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.