NPPES file of Aug 9, 2026

Isabelle Kathryn Avildsen, PHD

Clinical Neuropsychologist · New York, NY

Isabelle Kathryn Avildsen, PHD is a clinical neuropsychologist with a practice address in New York, New York, and NPI 1497598080, issued on Jun 13, 2024. Check the license (New York 025804, as entered in NPPES) with the New York 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
1497598080
Name
Isabelle Kathryn Avildsen
Credential
PHD
Primary taxonomy
Clinical Neuropsychologist 103G00000X
License number
025804 NY
Self-reported in NPPES; status is on the state search
Practice location
223 E 34TH St, New York, NY 10016
Phone
(646) 558-0800
Enumerated
Jun 13, 2024
Record last updated
Oct 31, 2025
Fax
(929) 455-9393
Medicare enrollment
Enrolled (PECOS I20241008000059); 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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8 nearest clinical neuropsychologist records → All 424 in New York → Look up another NPI →

Also registered at 223 E 34TH St

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

  1. William Barr, PH.D.Clinical Neuropsychologist1922016963
  2. Judith Bluvstein, M.D.Neurology with Special Qualifications in Child Neurology Physician1063647832
  3. Tracy Butler, MDNeurology Physician1659430833
  4. Macy Carobene, NPPediatric Nurse Practitioner1588897912
  5. Andrew Christiana, M.D.Neurology Physician1336595628
  6. Erin Conway, NPPediatric Nurse Practitioner1720372196

Verify Isabelle Kathryn Avildsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 025804    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 New York 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. New York UniversityNew York, NY

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

Isabelle Kathryn Avildsen among 424 clinical neuropsychologist records in New York

Isabelle Kathryn Avildsen, PHD is one of 424 clinical neuropsychologist records with a practice address in New York. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 93% of them.

  • NPI issued2024 · 93% of these records are older, 4% newer
  • In a Medicare fileYes · 26% of these records are
  • In the CMS Doctors and Clinicians fileYes · 33% of these records are
  • Graduated2022 · median 2007 among the 139 with a school on file
  • Record last updated2025 · 67% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Neuropsychologist providers in New York

There are 424 clinical neuropsychologist records in New York.

All 424 in New York → Every provider in New York → Clinical Neuropsychologist nationwide →

The 8 clinical neuropsychologist records with the nearest ZIP codes

  1. William Barr, PH.D.New York, NY 100161922016963
  2. Sonia Bernal, PH.D.New York, NY 100161811243066
  3. Lale Bilginer, PH.D.New York, NY 100161649417015
  4. Christopher Damato, PSY.D.New York, NY 100161558591503
  5. Ilana Grunwald, PH.D.New York, NY 100161073726816
  6. Yuen Shan Lee, PHDNew York, NY 100161427480946
  7. William Macallister, PH.D.New York, NY 100161023065653
  8. Christina Morrison, PH.D.New York, NY 100161588672539

Common questions

What is Isabelle Kathryn Avildsen, PHD's NPI number?

Isabelle Kathryn Avildsen, PHD's National Provider Identifier (NPI) is 1497598080, issued on Jun 13, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Isabelle Kathryn Avildsen, PHD located?

The NPPES record lists a practice address at 223 E 34TH St, New York, NY, 10016. Phone: (646) 558-0800. Providers update this record themselves, so call before visiting.

How can I verify Isabelle Kathryn Avildsen, PHD's license?

NPPES lists New York license number 025804, as entered by the provider. Search the New York 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.