Stephen Zak, MD
NPI 1205630480 · Student in an Organized Health Care Education/Training Program · Valhalla, NY
Stephen Zak, MD is a Student in an Organized Health Care Education/Training Program provider in Valhalla, NY (NPI 1205630480).
Provider details
- NPI number
- 1205630480
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2025-04-04
- Last updated
- 2025-04-04
- Certified
- 2025-04-04
Frequently asked questions
- What is Stephen Zak's NPI number?
- Stephen Zak's National Provider Identifier (NPI) is 1205630480, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Zak's specialty?
- Stephen Zak is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Stephen Zak located?
- Stephen Zak's practice location on file with NPPES is 100 Woods Rd, Valhalla, NY 10595-1530.
- What is Stephen Zak's phone number?
- The practice phone number listed in the NPPES registry for Stephen Zak is (914) 493-1769.
- Is Stephen Zak's NPI active?
- Yes — Stephen Zak's NPI (1205630480) is active in the NPPES registry as of the last update on 2025-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.