NPPES file of Aug 9, 2026

Donna Lettieri-Marks, PSY.D.

Clinical Psychologist · Naperville, IL

Donna Lettieri-Marks, PSY.D. is a clinical psychologist with a practice address in Naperville, Illinois, and NPI 1346233665, issued on Aug 23, 2005. 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
1346233665
Name
Donna Lettieri-Marks
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
Practice location
55 S Main St, Naperville, IL 60540
Phone
(630) 904-6610
Enumerated
Aug 23, 2005
Record last updated
Jul 13, 2026
Fax
(630) 544-3429
Medicare enrollment
Enrolled (PECOS I20060116000314); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest clinical psychologist records → All 3,947 in Illinois → Look up another NPI →

Also registered at 55 S Main St

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

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Verify Donna Lettieri-Marks 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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Donna Lettieri-Marks among 3,947 clinical psychologist records in Illinois

Donna Lettieri-Marks, PSY.D. 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 fileYes · 27% of these records are
  • Graduated1995 · median 2004 among the 1,081 with a school on file
  • Record last updated2026 · 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).

137 clinical psychologist records list a practice address in Naperville

They are 137 of the 4,634 NPPES records with a practice address in Naperville, 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 Naperville → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Carolyn Atkinson, PH.D.Naperville, IL 605401093828824
  2. Rulon Gibson, PH.D.Naperville, IL 605401689686925
  3. Michael Ingersoll, PSY.DNaperville, IL 605401487630737
  4. Joseph Keegan, PSYDNaperville, IL 605401962418871
  5. Josephine Kennedy, PSY.D.Naperville, IL 605401902876816
  6. Joanne Lorenz, PH.D.Naperville, IL 605401497725394
  7. Lisa Pinto, PSYDNaperville, IL 605401053417097
  8. Pamela Rebeck, PHDNaperville, IL 605401497740070

Common questions

What is Donna Lettieri-Marks, PSY.D.'s NPI number?

Donna Lettieri-Marks, PSY.D.'s National Provider Identifier (NPI) is 1346233665, issued on Aug 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Donna Lettieri-Marks, PSY.D. located?

The NPPES record lists a practice address at 55 S Main St, Naperville, IL, 60540. Phone: (630) 904-6610. Providers update this record themselves, so call before visiting.

How can I verify Donna Lettieri-Marks, PSY.D.'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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.