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

William C Crelin, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1447213475

William C Crelin, MD is an Endocrinology, Diabetes & Metabolism Physician in Waukesha, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

721 American Ave Ste 509 Prohealth Care Medical Associates Wmh Endocrinology
Waukesha, WI 53188-5031
Phone: (262) 928-9190
Fax: (262) 928-9199
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 30195020 (WI)

Record details

NPI number1447213475
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 10, 2006
Last updated in NPPESJuly 5, 2013

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