William Seidel, PHD
NPI 1831426915 · Clinical Neuropsychologist · Hastings on Hudson, NY
William Seidel, PHD is a Clinical Neuropsychologist provider in Hastings on Hudson, NY (NPI 1831426915).
Provider details
- NPI number
- 1831426915
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 013101-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service 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
- 2009-11-10
- Last updated
- 2010-11-04
Frequently asked questions
- What is William Seidel's NPI number?
- William Seidel's National Provider Identifier (NPI) is 1831426915, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Seidel's specialty?
- William Seidel is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is William Seidel located?
- William Seidel's practice location on file with NPPES is 139 Southside Ave, Hastings on Hudson, NY 10706-2242.
- What is William Seidel's phone number?
- The practice phone number listed in the NPPES registry for William Seidel is (914) 591-8188.
- Is William Seidel's NPI active?
- Yes — William Seidel's NPI (1831426915) is active in the NPPES registry as of the last update on 2010-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.