NPPES file of Aug 9, 2026

Peter Walter Demuth, PSYD

Clinical Psychologist · Evanston, IL

Peter Walter Demuth, PSYD is a clinical psychologist with a practice address in Evanston, Illinois, and NPI 1801960125, issued on Nov 20, 2006. Check the license with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801960125
Name
Peter Walter Demuth
Credential
PSYD
Primary taxonomy
Clinical Psychologist 103TC0700X
Practice location
717 Main St, Evanston, IL 60202
Phone
(847) 424-9304
Enumerated
Nov 20, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20050614001093); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 717 Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gretchen Davidson, MSW, LCSWClinical Social Worker1730165317
  2. Shawn Decker, LCSWClinical Social Worker1639533771
  3. Muriel Patay, D.MIN., LCSWClinical Social Worker1922177971

Verify Peter Walter Demuth in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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Peter Walter Demuth among 3,947 clinical psychologist records in Illinois

Peter Walter Demuth, PSYD 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 76% newer
  • In a Medicare fileNo · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated1990 · median 2004 among the 1,081 with a school on file
  • Record last updated2007 · 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).

158 clinical psychologist records list a practice address in Evanston

They are 158 of the 4,013 NPPES records with a practice address in Evanston, and 3,947 clinical psychologist records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 clinical psychologist records with the nearest ZIP codes

  1. Susan Alterman, PSY.D.Evanston, IL 602021699851097
  2. Mirel Castle, PSY.D.Evanston, IL 602021740455021
  3. Britton Creelman, PH.D.Evanston, IL 602021376875583
  4. Mary Pat Eitzen, PSY.D.Evanston, IL 602021114010113
  5. Sheila Flaherty, PH.D.Evanston, IL 602021952527566
  6. Brooke Laufer, PSY.D.Evanston, IL 602021689826331
  7. Rebecca Mueller, PSY.D.Evanston, IL 602021053326546
  8. Robert Prescott, PHDEvanston, IL 602021942415096

Common questions

What is Peter Walter Demuth, PSYD's NPI number?

Peter Walter Demuth, PSYD's National Provider Identifier (NPI) is 1801960125, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Peter Walter Demuth, PSYD located?

The NPPES record lists a practice address at 717 Main St, Evanston, IL, 60202. Phone: (847) 424-9304. Providers update this record themselves, so call before visiting.

How can I verify Peter Walter Demuth, PSYD'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.