William Hayward, PH.D.
NPI 1356741797 · Psychologist · Mukilteo, WA
William Hayward, PH.D. is a Psychologist provider in Mukilteo, WA (NPI 1356741797).
Provider details
- NPI number
- 1356741797
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Forensic Psychologist103TF0200X
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
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
Mailing address
Registry dates
- Enumerated
- 2014-09-03
- Last updated
- 2014-09-05
Frequently asked questions
- What is William Hayward's NPI number?
- William Hayward's National Provider Identifier (NPI) is 1356741797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hayward's specialty?
- William Hayward is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Hayward located?
- William Hayward's practice location on file with NPPES is 10710 Mukilteo Speedway, Mukilteo, WA 98275-5021.
- What is William Hayward's phone number?
- The practice phone number listed in the NPPES registry for William Hayward is (425) 349-8480.
- Is William Hayward's NPI active?
- Yes — William Hayward's NPI (1356741797) is active in the NPPES registry as of the last update on 2014-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.