> > > > Dr. William Crelin, MD
Dr. William C Crelin MD is a male Internist, has 27 years of experience and practices in Internal Medicine, Endocrinology and Metabolism, and Endocrinology, Diabetes & Metabolism.
Video profile
Dr. William Crelin has 1 office location.
Phcma Endocrinology Clinic at Waukesha Memorial Hospital
721 American Ave
Ste 509
Waukesha, WI 53188

Phone Number
Locations and availability (1)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. William Crelin:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

  • Currently 2.5 of 4 stars
Patient comments (3)

The overall average patient rating of Dr. William Crelin is Good. Dr. Crelin has been reviewed by 7 patients who have provided 3 comments. The rating is 2.5 out of 4 stars.

Patient Ratings
Ease of Appointment 3.2
  • Currently 3.1666666666667 of 4 stars
Promptness 3.6
  • Currently 3.6 of 4 stars
Courteous Staff 3.0
  • Currently 3 of 4 stars
Accurate Diagnosis 2.8
  • Currently 2.8 of 4 stars
Bedside Manner 2.8
  • Currently 2.8333333333333 of 4 stars
Spends Time with Me 2.7
  • Currently 2.6666666666667 of 4 stars
Follows Up After Visit 2.2
  • Currently 2.2 of 4 stars

Specialties & Research

Dr. William Crelin, MD is board certified in Internal Medicine and Endocrinology and Metabolism.

  • He has special expertise in 5 areas:
  • Diabetes
  • Diabetes Mellitus
  • Diabetes
  • Pituitary Diseases
  • Thyroid Diseases

Education & Awards

Dr. Crelin graduated from Medical College of Wisconsin, Milwaukee.


Dr. Crelin has 2 hospital affiliations:

  • Waukesha Memorial Hospital 
  • Oconomowoc Memorial Hospital 

Accepted Insurance Plans

Dr. Crelin accepts these health insurances in at least one office:

  • United Healthcare - 15 plans
  • Great-West Healthcare - 3 plans
  • Medica Health Plans - 4 plans
  • Anthem - 10 plans
  • Blue Cross Blue Shield of Illinois - 1 plan
  • Evercare - 5 plans
  • Humana - 21 plans
  • Cigna - 4 plans
  • Aetna - 2 plans

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Additional Information
Where does Dr. William C. Crelin practice?
Dr. William Crelin practices Internal Medicine, Endocrinology and Metabolism, and Endocrinology, Diabetes & Metabolism near Waukesha, WI.
See Waukesha Internists and Waukesha Endocrinologists.