NPPES file of Aug 9, 2026

Mary K. De Groot, PHD

Clinical Psychologist · Indianapolis, IN

Mary K. De Groot, PHD is a clinical psychologist with a practice address in Indianapolis, Indiana, and NPI 1316178775, issued on Aug 4, 2009. Check the license (Indiana 20042391A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1316178775
Name
Mary K. De Groot
Credential
PHD
Primary taxonomy
Clinical Psychologist 103TC0700X
License numbers
20042391A IN
5892 OH
Self-reported in NPPES; status is on the state search
Practice location
550 University Blvd, Indianapolis, IN 46202
Phone
(317) 944-5000
Enumerated
Aug 4, 2009
Record last updated
Mar 6, 2025
Medicaid ID
200973950 IN
Medicare enrollment
Enrolled (PECOS I20091218000232); 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.
Download card Updates feed

8 nearest clinical psychologist records → All 838 in Indiana → Look up another NPI →

Also registered at 550 University Blvd

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

  1. Furqan Ahmed, M.D.Gastroenterology Physician1538100300
  2. Jessica Ahonen, NPFamily Nurse Practitioner1659956951
  3. Omer Al-Buoshkor, MDInternal Medicine Physician1144586934
  4. Mohammad Al-Haddad, MDGastroenterology Physician1275516239
  5. Shelby Allen, M.D.Surgery Physician1013397405
  6. Michael Allison, DDSDentist1124961982

Verify Mary K. De Groot in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana board licenses this profession
    Search for license 20042391A    Check 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 Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. IU Health Medical Group LLCIndianapolis, IN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mary K. De Groot among 838 clinical psychologist records in Indiana

Mary K. De Groot, PHD is one of 838 clinical psychologist records with a practice address in Indiana. 20% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.

  • NPI issued2009 · 54% of these records are older, 41% newer
  • In a Medicare fileYes · 20% of these records are
  • In the CMS Doctors and Clinicians fileYes · 26% of these records are
  • Graduated1999 · median 2006 among the 222 with a school on file
  • Record last updated2025 · 62% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in Indiana

There are 838 clinical psychologist records in Indiana.

All 838 in Indiana → Every provider in Indianapolis → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Amy Bax, PHDIndianapolis, IN 462021629035134
  2. Melissa Butler, PHD HSPPIndianapolis, IN 462021528127511
  3. Louanne Davis, PSY.D.Indianapolis, IN 462021780623934
  4. Jack Ennis, PSYD, HSPPIndianapolis, IN 462021194773028
  5. Shelley Johns, PSYDIndianapolis, IN 462021871543777
  6. Audrey Krause, PH.D.Indianapolis, IN 462021528173416
  7. Sarah Landsberger, PHDIndianapolis, IN 462021013033489
  8. Timothy Lines, PHD HSPPIndianapolis, IN 462021225175136

Common questions

What is Mary K. De Groot, PHD's NPI number?

Mary K. De Groot, PHD's National Provider Identifier (NPI) is 1316178775, issued on Aug 4, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Mary K. De Groot, PHD located?

The NPPES record lists a practice address at 550 University Blvd, Indianapolis, IN, 46202. Phone: (317) 944-5000. Providers update this record themselves, so call before visiting.

How can I verify Mary K. De Groot, PHD's license?

NPPES lists Indiana license number 20042391A, as entered by the provider. Search the Indiana 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. Medicare files from data.cms.gov. 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.