What is Michael Onak's NPI number?

Michael Onak's National Provider Identifier (NPI) is 1366392698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Onak's specialty?

Michael Onak is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Michael Onak located?

Michael Onak's practice location on file with NPPES is 1628 Wenonah Ave, Berwyn, IL 60402-1619.

What is Michael Onak's phone number?

The practice phone number listed in the NPPES registry for Michael Onak is (630) 991-7148.

Is Michael Onak's NPI active?

Yes — Michael Onak's NPI (1366392698) is active in the NPPES registry as of the last update on 2026-01-28.

IndividualActive

Michael Onak, LSW

NPI 1366392698 · Clinical Social Worker · Berwyn, IL

Michael Onak, LSW is a Clinical Social Worker provider in Berwyn, IL (NPI 1366392698).

Provider details

NPI number: 1366392698
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LSW
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(47/100 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

1628 Wenonah Ave

Berwyn, IL 60402-1619

Phone: (630) 991-7148

Street-level locationGet directions

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Mailing address