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William Holland, PHD
NPI 1265373203 · Clinical Psychologist · New York, NY
William Holland, PHD is a Clinical Psychologist provider in New York, NY (NPI 1265373203).
Provider details
- NPI number
- 1265373203
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 028118 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
300 Central Park W Apt 1c
New York, NY 10024-1590
Phone: (917) 848-0305
Street-level locationGet directions
Mailing address
300 Central Park W Apt 1c
New York, NY 10024-1590
Registry dates
- Enumerated
- 2026-04-03
- Last updated
- 2026-04-03
- Certified
- 2026-04-03
Frequently asked questions
- What is William Holland's NPI number?
- William Holland's National Provider Identifier (NPI) is 1265373203, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Holland's specialty?
- William Holland is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Holland located?
- William Holland's practice location on file with NPPES is 300 Central Park W Apt 1c, New York, NY 10024-1590.
- What is William Holland's phone number?
- The practice phone number listed in the NPPES registry for William Holland is (917) 848-0305.
- Is William Holland's NPI active?
- Yes — William Holland's NPI (1265373203) is active in the NPPES registry as of the last update on 2026-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.