NPPES file of Aug 9, 2026

Gerard J. Erker, PHD

Clinical Neuropsychologist · Saint Louis, MO

Gerard J. Erker, PHD is a clinical neuropsychologist with a practice address in Saint Louis, Missouri, and NPI 1023052479, issued on Jun 16, 2006. Check the license (Missouri PY01284, as entered in NPPES) with the Missouri 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
1023052479
Name
Gerard J. Erker
Credential
PHD
Primary taxonomy
Clinical Neuropsychologist 103G00000X
License numbers
PY01284 MO
01284 MO
Self-reported in NPPES; status is on the state search
Practice location
6420 Clayton RD, Saint Louis, MO 63117
Phone
(314) 768-5205
Enumerated
Jun 16, 2006
Record last updated
Sep 11, 2025
Fax
(314) 768-5315
Medicare enrollment
Enrolled (PECOS I20100609000976); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 1984
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 neuropsychologist records → All 60 in Missouri → Look up another NPI →

Also registered at 6420 Clayton RD

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

  1. Sana Afzal, MDInternal Medicine Physician1083579213
  2. Munir Ahmad, M.D.Nuclear Medicine Physician1356381438
  3. John Alexander, MDAnesthesiology Physician1477541100
  4. Kahee Amedi, MDHospitalist Physician1215382189
  5. Larisa Anokhin, CRNACertified Registered Nurse Anesthetist1023047131
  6. Monika Aplyn, M.D.Internal Medicine Physician1336195247

Verify Gerard J. Erker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license PY01284    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 Missouri 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. Ssm Select Rehab St. Louis, LLCLake St Louis, MO

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

Gerard J. Erker among 60 clinical neuropsychologist records in Missouri

Gerard J. Erker, PHD is one of 60 clinical neuropsychologist records with a practice address in Missouri. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 65% newer
  • In a Medicare fileYes · 42% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated1984 · median 2005 among the 29 with a school on file
  • Record last updated2025 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103G00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Neuropsychologist providers in Missouri

There are 60 clinical neuropsychologist records in Missouri.

All 60 in Missouri → Every provider in Saint Louis → Clinical Neuropsychologist nationwide →

The 8 clinical neuropsychologist records with the nearest ZIP codes

  1. Paula Juelich, PHDSaint Louis, MO 631171588692065
  2. Robert Paul, PH.D.Saint Louis, MO 631211114062783
  3. Gabriel Araujo, PH.D.Saint Louis, MO 631101871929687
  4. Christopher Bosworth, PH.D.Saint Louis, MO 631101013317700
  5. Nourhan Elsayed, PHDSaint Louis, MO 631101770462657
  6. Lisa Harker, PSY.D.Saint Louis, MO 631101295967024
  7. Jennifer Mathews, PH.D.Saint Louis, MO 631241851621296
  8. Stephanie Powell, PH.D.Saint Louis, MO 631101831279785

Common questions

What is Gerard J. Erker, PHD's NPI number?

Gerard J. Erker, PHD's National Provider Identifier (NPI) is 1023052479, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gerard J. Erker, PHD located?

The NPPES record lists a practice address at 6420 Clayton RD, Saint Louis, MO, 63117. Phone: (314) 768-5205. Providers update this record themselves, so call before visiting.

How can I verify Gerard J. Erker, PHD's license?

NPPES lists Missouri license number PY01284, as entered by the provider. Search the Missouri 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.