Joseph Gryzbek, PSY.D.
NPI 1538513213 · Psychologist · Naperville, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Gryzbek, PSY.D. is a Psychologist provider in Naperville, IL (NPI 1538513213).
Provider details
- NPI number
- 1538513213
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 071.009076 (IL)
Specialties & taxonomies
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
10 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2016-04-19
- Last updated
- 2023-08-31
- Certified
- 2023-08-31
Frequently asked questions
- What is Joseph Gryzbek's NPI number?
- Joseph Gryzbek's National Provider Identifier (NPI) is 1538513213, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Gryzbek's specialty?
- Joseph Gryzbek is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Joseph Gryzbek located?
- Joseph Gryzbek's practice location on file with NPPES is 1979 N Mill St Ste 204, Naperville, IL 60563-8472.
- What is Joseph Gryzbek's phone number?
- The practice phone number listed in the NPPES registry for Joseph Gryzbek is (630) 474-1171.
- Does Joseph Gryzbek accept Medicare?
- Joseph Gryzbek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Gryzbek's NPI active?
- Yes — Joseph Gryzbek's NPI (1538513213) is active in the NPPES registry as of the last update on 2023-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.