Karen Williamson, PHD
NPI 1578597134 · Clinical Psychologist · Northbrook, IL
Karen Williamson, PHD is a Clinical Psychologist provider in Northbrook, IL (NPI 1578597134).
Provider details
- NPI number
- 1578597134
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- 071-004938 (IL)
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
19 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
- 2006-07-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Williamson's NPI number?
- Karen Williamson's National Provider Identifier (NPI) is 1578597134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Williamson's specialty?
- Karen Williamson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Karen Williamson located?
- Karen Williamson's practice location on file with NPPES is 1535 Lake Cook Road, Northbrook, IL 60062.
- What is Karen Williamson's phone number?
- The practice phone number listed in the NPPES registry for Karen Williamson is (847) 498-4744.
- Is Karen Williamson's NPI active?
- Yes — Karen Williamson's NPI (1578597134) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.