Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Mr. William James Whisler, MS, CGC

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

Mr. William James Whisler, MS, CGC is registered under 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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