Julie Guay, PSY.D., ABPP
NPI 1831331420 · Clinical Neuropsychologist · Berwyn, PA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julie Guay, PSY.D., ABPP is a Clinical Neuropsychologist provider in Berwyn, PA (NPI 1831331420).
Provider details
- NPI number
- 1831331420
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D., ABPP
- Sex
- Female
- Sole proprietor
- Yes
- License
- PS016479 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,003 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Psychological Or Neuropsychological Test By Technician, Each Additional 30 Minutes96139 | 462 | $36 |
| Evaluation of Neuropsychological Test, Each Additional Hour96133 | 329 | $99 |
| Psychiatric Diagnostic Evaluation90791 | 72 | $175 |
| Evaluation of Neuropsychological Test, First Hour96132 | 72 | $130 |
| Administration of Psychological Or Neuropsychological Test By Technician, First 30 Minutes96138 | 68 | $35 |
Typical Medicare-allowed amounts for these services range $35–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-03-30
- Last updated
- 2025-03-28
- Certified
- 2025-03-28
Frequently asked questions
- What is Julie Guay's NPI number?
- Julie Guay's National Provider Identifier (NPI) is 1831331420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julie Guay's specialty?
- Julie Guay is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Julie Guay located?
- Julie Guay's practice location on file with NPPES is 1199 Lancaster Ave Ste 110, Berwyn, PA 19312-1341.
- What is Julie Guay's phone number?
- The practice phone number listed in the NPPES registry for Julie Guay is (610) 241-4331.
- Does Julie Guay accept Medicare?
- Julie Guay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julie Guay's NPI active?
- Yes — Julie Guay's NPI (1831331420) is active in the NPPES registry as of the last update on 2025-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.