Quick answers
- Does Julie L. Guay accept Medicare assignment?
- Yes. Medicare's clinician data says Julie L. Guay accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Julie L. Guay see?
- In 2024, CMS data shows 70 Original Medicare patients and 1,035 services for Julie L. Guay. This counts Original Medicare only and measures volume, not quality.
- What is Julie L. Guay's NPI number?
- 1831331420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Julie L. Guay, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 70 |
|---|---|
| Services billed to Medicare | 1,035 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Administration of psychological or neuropsychological test by technician, each additional 30 minutes (96139)462 services
- Evaluation of neuropsychological test, each additional hour (96133)329 services
- Psychiatric diagnostic evaluation (90791)72 services
- Evaluation of neuropsychological test, first hour (96132)72 services
- Administration of psychological or neuropsychological test by technician, first 30 minutes (96138)68 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Arthritis46%
- Anxiety39%
- Depression34%
- Ischemic heart disease30%
Practice locations
Addresses where Julie L. Guay is enrolled with Medicare (CMS data updated October 2, 2026).
- 1199 Lancaster Ave, Suite 110Berwyn, PA 19312 (610) 241‑4331
Group practices
Medicare enrollment lists Julie L. Guay as a member of this group (CMS data updated October 2, 2026).
- Neuropsychological Assessment and Therapy Services LLC4 clinicians in the group
Specialties
- Clinical Psychologistprimary
Find other clinicians: Clinical Psychologist, Pennsylvania →
Other clinical psychologists in Berwyn
Clinicians with the same Medicare primary specialty in Berwyn, PA — not a recommendation.
Other clinicians in Neuropsychological Assessment and Therapy Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PSY |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1831331420 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians