John Gavend Sonnenberg, PHD
Clinical Psychologist · Chicago, IL
John Gavend Sonnenberg, PHD is a clinical psychologist with a practice address in Chicago, Illinois, and NPI 1023090990, issued on Nov 16, 2005. Check the license (Illinois 071005109, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Gavend Sonnenberg
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 071005109 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1021 W Lawrence Ave, Chicago, IL 60640
- Phone
- (773) 989-8313
- Enumerated
- Nov 16, 2005
- Record last updated
- Mar 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (773) 989-9692
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,947 in Illinois → Look up another NPI →
Also registered at 1021 W Lawrence Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Gavend Sonnenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 071005109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Gavend Sonnenberg among 3,947 clinical psychologist records in Illinois
John Gavend Sonnenberg, PHD is one of 3,947 clinical psychologist records with a practice address in Illinois. 16% 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileNo · 16% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2015 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,478 clinical psychologist records list a practice address in Chicago
They are 1,478 of the 63,379 NPPES records with a practice address in Chicago, and 3,947 clinical psychologist records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,947 in Illinois → Every provider in Chicago → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Larry Baldwin, PH.DChicago, IL 606401568542595
- Betty ContorerChicago, IL 606401912092057
- John Frampton, PSY.D.Chicago, IL 606401538214820
- Leah Horvath, PH.D.Chicago, IL 606401457487795
- Howard Kaplan, PHDChicago, IL 606401306973458
- Marshall Kordon, PSY.D.Chicago, IL 606401487689972
- Konstantinos Kostas, PHDChicago, IL 606401629047469
- Carolyn Mildner, PH.D.Chicago, IL 606401952445355
Common questions
What is John Gavend Sonnenberg, PHD's NPI number?
John Gavend Sonnenberg, PHD's National Provider Identifier (NPI) is 1023090990, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Gavend Sonnenberg, PHD located?
The NPPES record lists a practice address at 1021 W Lawrence Ave, Chicago, IL, 60640. Phone: (773) 989-8313. Providers update this record themselves, so call before visiting.
How can I verify John Gavend Sonnenberg, PHD's license?
NPPES lists Illinois license number 071005109, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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. 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.