Breanna Guillem, PSY.D.
NPI 1063894327 · Psychologist · Holbrook, NY
Breanna Guillem, PSY.D. is a Psychologist provider in Holbrook, NY (NPI 1063894327).
Provider details
- NPI number
- 1063894327
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- School Psychologist103TS0200X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-23
- Last updated
- 2025-04-08
- Certified
- 2025-04-08
Frequently asked questions
- What is Breanna Guillem's NPI number?
- Breanna Guillem's National Provider Identifier (NPI) is 1063894327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Breanna Guillem's specialty?
- Breanna Guillem is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Breanna Guillem located?
- Breanna Guillem's practice location on file with NPPES is 321 Dante Ct, Holbrook, NY 11741-3839.
- What is Breanna Guillem's phone number?
- The practice phone number listed in the NPPES registry for Breanna Guillem is (631) 365-1417.
- Is Breanna Guillem's NPI active?
- Yes — Breanna Guillem's NPI (1063894327) is active in the NPPES registry as of the last update on 2025-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.