Timothy Onto Ts'o, M.D., PH.D.
Psychiatry Physician · Libertyville, IL
Timothy Onto Ts'o, M.D., PH.D. is a psychiatry physician with a practice address in Libertyville, Illinois, and NPI 1689780892, issued on Aug 21, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Timothy Onto Ts'o
- Credential
- M.D., PH.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- Practice location
- 1110 W Golf RD, Libertyville, IL 60048
- Phone
- (847) 680-7596
- Enumerated
- Aug 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (847) 680-7351
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Verify Timothy Onto Ts'o in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Timothy Onto Ts'o among 2,147 psychiatry physician records in Illinois
Timothy Onto Ts'o, M.D., PH.D. 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 not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 65% newer
- In a Medicare fileNo · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2007 · 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).
Psychiatry Physician providers in Illinois
There are 2,147 psychiatry physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,147 in Illinois → Every provider in Libertyville → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Paul Berkowitz, M.D.Libertyville, IL 600481275564197
- Elvina Berman, M.DLibertyville, IL 600481366487688
- Elisabeth Desapereira, MDLibertyville, IL 600481134196678
- Michael Greenbaum, MDLibertyville, IL 600481598792970
- Nicole Jacques, LSWLibertyville, IL 600481013870609
- Qurat Ul Ain KhanLibertyville, IL 600481487817128
- John Schuler, PSY.DLibertyville, IL 600481457468035
- Sandra Swain, M.D.Libertyville, IL 600481295811016
Common questions
What is Timothy Onto Ts'o, M.D., PH.D.'s NPI number?
Timothy Onto Ts'o, M.D., PH.D.'s National Provider Identifier (NPI) is 1689780892, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Onto Ts'o, M.D., PH.D. located?
The NPPES record lists a practice address at 1110 W Golf RD, Libertyville, IL, 60048. Phone: (847) 680-7596. Providers update this record themselves, so call before visiting.
How can I verify Timothy Onto Ts'o, M.D., PH.D.'s license?
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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.