Thomas J. O'Brien, DO
Psychiatry Physician · Champaign, IL
Thomas J. O'Brien, DO is a psychiatry physician with a practice address in Champaign, Illinois, and NPI 1376122440, issued on Apr 6, 2021. Check the license (Illinois 036.170923, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thomas J. O'Brien
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 036.170923 IL
125.078382 IL
Self-reported in NPPES; status is on the state search - Practice location
- 206 N Randolph St, Champaign, IL 61820
- Phone
- (833) 351-8255
- Enumerated
- Apr 6, 2021
- Record last updated
- Jan 16, 2026
- Medicare enrollment
- Enrolled (PECOS I20251203001989); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Also registered at 206 N Randolph St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Adam Griffin, MDPsychiatry Physician1386225704
Verify Thomas J. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.170923Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average psychiatry physician in 2024
554 Medicare Part D claims for 35 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Sertraline Hcl44 claims
- Quetiapine Fumarate38 claims
- Trazodone Hcl33 claims
- Fluoxetine Hcl32 claims
- Buspirone Hcl31 claims
- Clozapine31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mccd FL Psychiatry Services PAChampaign, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas J. O'Brien among 2,147 psychiatry physician records in Illinois
Thomas J. O'Brien, DO is one of 2,147 psychiatry physician records with a practice address in Illinois. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 12% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated2021 · median 2004 among the 877 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 psychiatry physician records list a practice address in Champaign
They are 41 of the 2,445 NPPES records with a practice address in Champaign, and 2,147 psychiatry physician records in Illinois.
All 2,147 in Illinois → Every provider in Champaign → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Maryrose Bauschka, MDChampaign, IL 618201831313709
- Nitin Bhosale, MDChampaign, IL 618201487732103
- Linda Derum, MDChampaign, IL 618201760551865
- Karla Garcia-Digioia, M.D.Champaign, IL 618201962933754
- Rayal Gorrepati, MDChampaign, IL 618201114190949
- Surinderpal Kahlon, M.D.Champaign, IL 618201538265483
- David Kopacz, M.D.Champaign, IL 618201528013539
- Lisette Rodriguez-Cabezas, M.D.Champaign, IL 618201518220573
Common questions
What is Thomas J. O'Brien, DO's NPI number?
Thomas J. O'Brien, DO's National Provider Identifier (NPI) is 1376122440, issued on Apr 6, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. O'Brien, DO located?
The NPPES record lists a practice address at 206 N Randolph St, Champaign, IL, 61820. Phone: (833) 351-8255. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. O'Brien, DO's license?
NPPES lists Illinois license number 036.170923, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas J. O'Brien, DO prescribe under Medicare Part D?
In 2024, Thomas J. O'Brien, DO had 554 Medicare Part D claims for 35 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.