What is Sophie Marciniak's NPI number?

Sophie Marciniak's National Provider Identifier (NPI) is 1639006943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sophie Marciniak's specialty?

Sophie Marciniak is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Sophie Marciniak located?

Sophie Marciniak's practice location on file with NPPES is 255 38th Ave, St Charles, IL 60174-5411.

What is Sophie Marciniak's phone number?

The practice phone number listed in the NPPES registry for Sophie Marciniak is (630) 509-8700.

Is Sophie Marciniak's NPI active?

Yes — Sophie Marciniak's NPI (1639006943) is active in the NPPES registry as of the last update on 2026-05-08.

IndividualActive

Sophie Marciniak

NPI 1639006943 · Behavior Technician · St Charles, IL

Sophie Marciniak is a Behavior Technician provider in St Charles, IL (NPI 1639006943).

Provider details

NPI number: 1639006943
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

255 38th Ave

St Charles, IL 60174-5411

Phone: (630) 509-8700

Street-level locationGet directions

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Mailing address