Mark Ketterson, LCSW
Mental Health Counselor · Chicago, IL
Mark Ketterson, LCSW is a mental health counselor with a practice address in Chicago, Illinois, and NPI 1770706699, issued on Apr 10, 2007. Check the license with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Ketterson
- Credential
- LCSW
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- Practice location
- 20 N Clark St, Chicago, IL 60602
- Phone
- (866) 296-5262
- Enumerated
- Apr 10, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (312) 558-1570
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 10,716 in Illinois → Look up another NPI →
Also registered at 20 N Clark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vimi Gupta, LCSWClinical Social Worker1851545370
- Jeffrey LewisProfessional Counselor1346721222
Verify Mark Ketterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Ketterson among 10,716 mental health counselor records in Illinois
Mark Ketterson, LCSW is one of 10,716 mental health counselor records with a practice address in Illinois. 4% 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 2007, is newer than 4% of them.
- NPI issued2007 · 4% of these records are older, 91% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,130 mental health counselor records list a practice address in Chicago
They are 2,130 of the 63,379 NPPES records with a practice address in Chicago, and 10,716 mental health counselor records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 10,716 in Illinois → Every provider in Chicago → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Patricia Bardenett, L.C.S.W.Chicago, IL 606021669544656
- Wendy Boxer, PH.D.Chicago, IL 606021902957061
- Elizabeth Fisk Walsh, M.A., L.C.P.C.Chicago, IL 606021871568584
- Grace Gianforte Gianforte, CRC, LCPCChicago, IL 606021689747180
- Dianne Goldin, LCPCChicago, IL 606021578605788
- Deborah Hellerstein, LCSWChicago, IL 606021851440663
- Edward Jana, LCPCChicago, IL 606021659383826
- Larry Nash, MA LCPCChicago, IL 606021356484067
Common questions
What is Mark Ketterson, LCSW's NPI number?
Mark Ketterson, LCSW's National Provider Identifier (NPI) is 1770706699, issued on Apr 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Ketterson, LCSW located?
The NPPES record lists a practice address at 20 N Clark St, Chicago, IL, 60602. Phone: (866) 296-5262. Providers update this record themselves, so call before visiting.
How can I verify Mark Ketterson, LCSW's license?
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.