Peter Williamson, PHD
NPI 1326005935 · Clinical Neuropsychologist · Madison, WI
Peter Williamson, PHD is a Clinical Neuropsychologist provider in Madison, WI (NPI 1326005935).
Provider details
- NPI number
- 1326005935
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 1088-057 (WI)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1313 Fish Hatchery RdDean ClinicMadison, WI 53715-1911Phone: (608) 252-8000Fax: (608) 252-8245
Registry dates
- Enumerated
- 2006-04-27
- Last updated
- 2018-01-23
Frequently asked questions
- What is Peter Williamson's NPI number?
- Peter Williamson's National Provider Identifier (NPI) is 1326005935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Williamson's specialty?
- Peter Williamson is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Peter Williamson located?
- Peter Williamson's practice location on file with NPPES is 1313 Fish Hatchery Rd, Madison, WI 53715-1911.
- What is Peter Williamson's phone number?
- The practice phone number listed in the NPPES registry for Peter Williamson is (608) 252-8000.
- Is Peter Williamson's NPI active?
- Yes — Peter Williamson's NPI (1326005935) is active in the NPPES registry as of the last update on 2018-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.