What is Holly Pietrzak-Slazakowski's NPI number?

Holly Pietrzak-Slazakowski's National Provider Identifier (NPI) is 1992472054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Holly Pietrzak-Slazakowski's specialty?

Holly Pietrzak-Slazakowski is listed in the NPPES registry with a primary specialty of Developmental Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).

Where is Holly Pietrzak-Slazakowski located?

Holly Pietrzak-Slazakowski's practice location on file with NPPES is 440 Kennedy St, Marengo, IL 60152-9026.

What is Holly Pietrzak-Slazakowski's phone number?

The practice phone number listed in the NPPES registry for Holly Pietrzak-Slazakowski is (815) 814-7090.

Is Holly Pietrzak-Slazakowski's NPI active?

Yes — Holly Pietrzak-Slazakowski's NPI (1992472054) is active in the NPPES registry as of the last update on 2021-08-26.

IndividualActive

Holly Pietrzak-Slazakowski, DT

NPI 1992472054 · Developmental Therapist · Marengo, IL

Holly Pietrzak-Slazakowski, DT is a Developmental Therapist provider in Marengo, IL (NPI 1992472054).

Provider details

NPI number: 1992472054
Entity type: Individual
Primary specialty: Developmental TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Credential: DT
Sex: Female
Sole proprietor: Yes

Practice location

440 Kennedy St

Marengo, IL 60152-9026

Phone: (815) 814-7090

Street-level locationGet directions

More IL providers

Mailing address

440 Kennedy St

Marengo, IL 60152-9026

Specialties & taxonomies

Developmental TherapistPrimary222Q00000X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Profile Score

Established profile(56/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
5 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.

Enumerated: 2021-08-26
Last updated: 2021-08-26
Certified: 2021-08-26

Frequently asked questions

What is Holly Pietrzak-Slazakowski's NPI number?: Holly Pietrzak-Slazakowski's National Provider Identifier (NPI) is 1992472054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Holly Pietrzak-Slazakowski's specialty?: Holly Pietrzak-Slazakowski is listed in the NPPES registry with a primary specialty of Developmental Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
Where is Holly Pietrzak-Slazakowski located?: Holly Pietrzak-Slazakowski's practice location on file with NPPES is 440 Kennedy St, Marengo, IL 60152-9026.
What is Holly Pietrzak-Slazakowski's phone number?: The practice phone number listed in the NPPES registry for Holly Pietrzak-Slazakowski is (815) 814-7090.
Is Holly Pietrzak-Slazakowski's NPI active?: Yes — Holly Pietrzak-Slazakowski's NPI (1992472054) is active in the NPPES registry as of the last update on 2021-08-26.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions