Physician Profile
Unclaimed ProfileAbout WILLIAMS
Christopher Patrick Williams, PhD is a clinical psychologist practicing in Chicago, IL. Christopher is also listed as specializing in psychologist — clinical and psychologist. Medicare claims data shows Christopher provided 696 services to 290 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (847) 425-6400
- Email not available
Practice Locations
2740 W FOSTER AVE STE 113
Chicago, IL 60625
Procedures Most Often Billed to Medicare
696 services · 290 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Administration of psychological or neuropsychological test, each additional 30 minutes | Treatment | 96137 |
213 |
| Evaluation of neuropsychological test, each additional hour | Treatment | 96133 |
171 |
| Administration of psychological or neuropsychological test by technician, each additional 30 minutes | Treatment | 96139 |
136 |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
59 |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
58 |
| Administration of psychological or neuropsychological test, first 30 minutes | Treatment | 96136 |
35 |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
24 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other clinical psychologists in Chicago 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Administration of psychological or neuropsychological test, each additional 30 minutes 7
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Williams's specialty?
Dr. Williams is a clinical psychologist in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CLINICAL PSYCHOLOGIST”.
NPI registry
Where can I find Dr. Williams?
Dr. Williams is listed at 2740 W FOSTER AVE STE 113, Chicago, IL 60625. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Williams?
The number on file is (847) 425-6400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Williams?
Dr. Williams's National Provider Identifier is 1003505967. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Williams's medical education?
Dr. Williams attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Williams have?
Dr. Williams has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Williams known for?
According to Medicare billing data, Dr. Williams provides treatments such as administration of psychological or neuropsychological test, each additional 30 minutes and evaluation of neuropsychological test, each additional hour. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Williams's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williams. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.