What is Diane Marshall's NPI number?

Diane Marshall's National Provider Identifier (NPI) is 1598623845, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Diane Marshall's specialty?

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

Where is Diane Marshall located?

Diane Marshall's practice location on file with NPPES is 4031 W Dayton St, Mchenry, IL 60050-8377.

What is Diane Marshall's phone number?

The practice phone number listed in the NPPES registry for Diane Marshall is (815) 344-1230.

Is Diane Marshall's NPI active?

Yes — Diane Marshall's NPI (1598623845) is active in the NPPES registry as of the last update on 2026-01-14.

IndividualActive

Diane Marshall

NPI 1598623845 · Social Worker · Mchenry, IL

Diane Marshall is a Social Worker provider in Mchenry, IL (NPI 1598623845).

Provider details

NPI number: 1598623845
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

Social WorkerPrimary104100000X
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

4031 W Dayton St

Mchenry, IL 60050-8377

Phone: (815) 344-1230

Street-level locationGet directions

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Mailing address