Mercy Medical Center Sioux City

Specialty Clinics

All specialty clinics at Oakland Mercy Hospital are developed to provide residents the most convenient and accessible health care possible. Physicians representing a variety of medical specialties care for patients and conduct medical practice in areas ranging from Cardiology to Urology.

The following list of medical specialties and services represents the wide array of care that Oakland Mercy Hospital provides to our communities.

If you would like to schedule an appointment with any of these specialists, please call the hospital and ask to speak with Laura Murphy.

  Cardiology Dr. Douglas Guy

Phone  712-294-7020

  Call for appointment   Fax      712-294-7022
  Oncology Dr. Susan Kambhu Phone   402-552-9800
  1st Saturday of the month   Fax       402-552-9898
  Surgery / GI Dr. Paul Johnson Phone    605-217-5500
  Wednesdays, twice a month  

Fax        605-217-5513


Podiatry Dr. Kham Ung

 Phone   712-255-0502

Call for appointment No referral needed

 Fax        712-258-9977


Cardiology & Cardiovascular
A cardiologist is an internist who specializes in the prevention, diagnosis and medical treatment of diseases of the heart.
A gastroenterologist is an internist that focuses on the function and disorders of the GI system, which includes the esophagus, stomach, pancreas, intestines and liver. 
A hematologist / oncologist diagnoses and treats diseases of the blood and blood forming organs and all cancers of the body.