NPPES file of Aug 9, 2026

Lindsey Willis Williams, PHD

Psychologist · Indianapolis, IN

Lindsey Willis Williams, PHD is a psychologist with a practice address in Indianapolis, Indiana, and NPI 1639546773, issued on Aug 24, 2015. Check the license 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
1639546773
Name
Lindsey Willis Williams
Credential
PHD
Primary taxonomy
Psychologist 103T00000X
Practice location
355 W 16TH St, Indianapolis, IN 46202
Phone
(317) 963-7316
Enumerated
Aug 24, 2015
Record last updated
Mar 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20180423000950); 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 355 W 16TH St

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

  1. Maurissa AbecassisMental Health Counselor1467996132
  2. Kazeerat Adedokun, MDStudent in an Organized Health Care Education/Training Program1962107235
  3. Amy Anderson, NPAcute Care Nurse Practitioner1750545109
  4. Peggy Barnes, LCSWSocial Worker1003863085
  5. Sarah BaumanStudent in an Organized Health Care Education/Training Program1679980080
  6. Cheryl Bedwell, RNRegistered Nurse1912259359

Verify Lindsey Willis Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana 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 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.

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Bills Medicare through one group practice

  1. University OF North Carolina AT Chapel HillChapel Hill, NC

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

Lindsey Willis Williams among 439 psychologist records in Indiana

Lindsey Willis Williams, PHD is one of 439 psychologist records with a practice address in Indiana. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 68% of them.

  • NPI issued2015 · 68% of these records are older, 28% newer
  • In a Medicare fileYes · 15% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated2016 · median 2008 among the 88 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychologist providers in Indiana

There are 439 psychologist records in Indiana.

The 8 psychologist records with the nearest ZIP codes

  1. Sara Boyer, PHD, HSPPIndianapolis, IN 462021407088842
  2. Stephanie Callaway, PSY.D.Indianapolis, IN 462021457434706
  3. Sara Davis, PHDIndianapolis, IN 462021235220450
  4. Joan Farrell, PHDIndianapolis, IN 462021528005832
  5. Jill Fodstad, PHD, HSPPIndianapolis, IN 462021710237458
  6. Matthew Grant, PSY.D.Indianapolis, IN 462021609074640
  7. Danielle Henderson, PHDIndianapolis, IN 462021689958399
  8. William Kronenberger, PHDIndianapolis, IN 462021184678609

Common questions

What is Lindsey Willis Williams, PHD's NPI number?

Lindsey Willis Williams, PHD's National Provider Identifier (NPI) is 1639546773, issued on Aug 24, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Lindsey Willis Williams, PHD located?

The NPPES record lists a practice address at 355 W 16TH St, Indianapolis, IN, 46202. Phone: (317) 963-7316. Providers update this record themselves, so call before visiting.

How can I verify Lindsey Willis Williams, PHD's license?

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.

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.