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Diana L. Maas, MD

Associate Professor

"My philosophy of care is to take the time to educate patients about their medical condition so that they can share in the decision making processes of their care."

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(414) 805-3666




  • Endocrinology

Board Certification

  • Endocrinology, Diabetes and Metabolism
  • Internal Medicine

Hospital Affiliations

  • Froedtert Hospital
  • Zablocki VA Medical Center

Patient Ages Seen

  • Adult
  • Senior

Languages Spoken

  • English

Diseases & Conditions

  • Adrenal Disorders
  • Parathyroid Disease
  • Pituitary Disorders
  • Thyroid Disease

Clinic Locations

Endocrinology - Froedtert

9200 West Wisconsin Avenue
Milwaukee WI,  53226
(414) 805-6550
Fax:(414) 456-6210
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Dr. Maas has been involved in the specialty of Endocrinology, Diabetes and Metabolism since early 1990. She received her medical training and completed her residency and fellowship at the Medical College of Wisconsin and Affiliated Hospitals. Dr. Maas is an Associate Professor of Medicine and the Director of the Pituitary Clinic. She works with the neurosurgeons as a team to take care of patients with pituitary tumors.


Education / Training

  • Doctor of Medicine - Medical College of Wisconsin - Milwaukee (1985)
  • Residency in General Internal Medicine  - Medical College of Wisconsin - Milwaukee (1985-1988)
  • Fellowship in Endocrinology & Metabolism - Medical College of Wisconsin - Milwaukee (1988-1991)