Timothy O'Brien, PSYD
NPI 1801449681 · Clinical Psychologist · Chicago, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy O'Brien, PSYD is a Clinical Psychologist provider in Chicago, IL (NPI 1801449681).
Provider details
- NPI number
- 1801449681
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 071.010066 (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
6 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
- 2019-07-19
- Last updated
- 2025-01-08
- Certified
- 2025-01-08
Frequently asked questions
- What is Timothy O'Brien's NPI number?
- Timothy O'Brien's National Provider Identifier (NPI) is 1801449681, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy O'Brien's specialty?
- Timothy O'Brien is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Timothy O'Brien located?
- Timothy O'Brien's practice location on file with NPPES is 2265 W 113th Pl, Chicago, IL 60643-4104.
- What is Timothy O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Timothy O'Brien is (773) 683-3500.
- Does Timothy O'Brien accept Medicare?
- Timothy O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy O'Brien's NPI active?
- Yes — Timothy O'Brien's NPI (1801449681) is active in the NPPES registry as of the last update on 2025-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.