Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. William James Whisler, MS, CGC

Individual provider Genetic Counselor (M.S.) · NPI 1518734904

Mr. William James Whisler, MS, CGC is a Genetic Counselor (M.S.) in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2023.

Licensed in
IL
In the registry since
2023
What do these letters mean?
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

225 E Chicago Ave
Chicago, IL 60611-2991
Phone: (312) 227-4792
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Genetic Counselor (M.S.) (primary) Taxonomy 170300000X · Licence 246.000947 (IL)

Record details

NPI number1518734904
Entity typeIndividual (Type 1)
GenderMale
Credentials MS , CGC
Sole proprietorNo
NPI enumeratedDecember 6, 2023
Last updated in NPPESMay 16, 2025
Certification dateMay 16, 2025

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