IndividualActive
William Barker, PSYD
NPI 1891122636 · Clinical Psychologist · Apo
William Barker, PSYD is a Clinical Psychologist provider in Apo (NPI 1891122636).
Provider details
- NPI number
- 1891122636
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 071008688 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(70/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs 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
Opc 371 Box 39
Apo, 96271-9001
Phone: (315) 737-4817
Approximate (ZIP-level) locationGet directions
Mailing address
Opc 371 Box 39
Apo, AP 96271-9001
Registry dates
- Enumerated
- 2013-10-10
- Last updated
- 2025-07-07
- Certified
- 2025-06-23
Frequently asked questions
- What is William Barker's NPI number?
- William Barker's National Provider Identifier (NPI) is 1891122636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Barker's specialty?
- William Barker is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Barker located?
- William Barker's practice location on file with NPPES is Opc 371 Box 39, Apo, 96271-9001.
- What is William Barker's phone number?
- The practice phone number listed in the NPPES registry for William Barker is (315) 737-4817.
- Is William Barker's NPI active?
- Yes — William Barker's NPI (1891122636) is active in the NPPES registry as of the last update on 2025-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.