NPPES file of Aug 9, 2026

Crystal D. Mahoy, PSY.D.

Clinical Psychologist · Evansville, IN

Crystal D. Mahoy, PSY.D. is a clinical psychologist with a practice address in Evansville, Indiana, and NPI 1124424189, issued on Nov 18, 2014. Check the license (Indiana 20043026A, 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
1124424189
Name
Crystal D. Mahoy
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
20043026A IN
Self-reported in NPPES; status is on the state search
Practice location
421 Chestnut St, Evansville, IN 47713
Phone
(812) 426-9779
Enumerated
Nov 18, 2014
Record last updated
Mar 14, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(812) 450-8102
Medicare enrollment
Enrolled (PECOS I20170316001493); 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 421 Chestnut St

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

  1. Narothama Reddy Aeddula, MDNephrology Physician1255581641
  2. Maqbool Ahmed, M.D.Hematology & Oncology Physician1023022118
  3. John Allega, M.D.Internal Medicine Physician1447264544
  4. Yousef Altowaireb, M.D.Endocrinology, Diabetes & Metabolism Physician1104024363
  5. Thomas Anderson, MDInternal Medicine Physician1497821813
  6. Ankita Bahuva, M.D.Internal Medicine Physician1679886691

Verify Crystal D. Mahoy 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 20043026A    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. Deaconess Clinic IncEvansville, IN

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

Crystal D. Mahoy among 838 clinical psychologist records in Indiana

Crystal D. Mahoy, PSY.D. 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 2014, is newer than 71% of them.

  • NPI issued2014 · 71% of these records are older, 25% newer
  • In a Medicare fileYes · 20% of these records are
  • In the CMS Doctors and Clinicians fileYes · 26% of these records are
  • Graduated2013 · median 2006 among the 222 with a school on file
  • Record last updated2017 · 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 Evansville → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Donna Culley, PH.D., HSPPEvansville, IN 477131205160603
  2. Joseph Dickinson, PH.D.Evansville, IN 477131295750735
  3. Julie Hoeppner, PSY.D.Evansville, IN 477131871905356
  4. Fania Lee, PSYD HSPPEvansville, IN 477131992742068
  5. Susan McDowell, PH.DEvansville, IN 477131588063473
  6. Beth Petersen, PSY. D. HSPPEvansville, IN 477131518941384
  7. Candi Vincent, PSY.D.Evansville, IN 477131124113824
  8. Jennifer Braun, PSYD, HSPPEvansville, IN 477141083919799

Common questions

What is Crystal D. Mahoy, PSY.D.'s NPI number?

Crystal D. Mahoy, PSY.D.'s National Provider Identifier (NPI) is 1124424189, issued on Nov 18, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Crystal D. Mahoy, PSY.D. located?

The NPPES record lists a practice address at 421 Chestnut St, Evansville, IN, 47713. Phone: (812) 426-9779. Providers update this record themselves, so call before visiting.

How can I verify Crystal D. Mahoy, PSY.D.'s license?

NPPES lists Indiana license number 20043026A, 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.