Hillcrest COVID-19 Call Center
Hillcrest HealthCare System has an established COVID-19 Call Center. Operators are available Monday - Friday, from 8 a.m. to 5 p.m. to answer patient questions, provide support and connect them to a provider. The Call Center line is


Life-Saving Screenings

Please consider the following questions:

  • Are you a male older than 45 or a female older than 55?
  • Do you smoke?
  • Do you take blood pressure medication?
  • Do you have any close relatives with a history of heart attack, bypass, stroke or balloon surgery?
  • Are you diabetic?
  • Is your cholesterol elevated?

If you answered "yes" to two or more questions, you may be at risk for heart attack or stroke. Please consider the series of cardiovascular screenings offered by Oklahoma Heart Institute.

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Interventional Cardiology

The prevention clinics at Oklahoma Heart Institute identify and aggressively treat the risk factors known to promote the development of heart attacks and strokes.

In the area of diagnosis, Oklahoma Heart Institute has the region’s most complete and sophisticated noninvasive imaging program, including advanced cardiovascular MRI, CT, ultrasound, and nuclear imaging tests.

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Nuclear Cardiology

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Saran Oliver, M.D.

Saran Oliver, M.D.


Oklahoma Heart Institute Pryor
111 N. Bailey St.
Pryor , OK 74361
Oklahoma Heart Institute Owasso
10512 N. 110th East Ave Suite 100
Owasso , OK 74055
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Varicose Veins

Although recent years have brought about a greater awareness of the importance of diagnosing and treating peripheral arterial disease, pathology of the venous system has received little attention. Peripheral venous disease was first mentioned in the medical literature in 500 B.C., when Hippocrates described an association between leg ulcers and varicose veins. Despite longstanding recognition, understanding of issues surrounding venous hypertension and resultant venous incompetence has lagged.

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Heart Valve Disease

Living with severe aortic stenosis or moderately severe/severe mitral regurgitation can make life difficult. Are you short of breath constantly? Do you have to miss out on events with family and friends because you don’t have the energy? Are you no longer able to do the things you used to enjoy? We know. Our patients were just like you.


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Cardiovascular MRI

Cardiovascular MRI at Oklahoma Heart Institute

  • Over 15 years of study;  1st study was done 6/3/99
  • 1st department of its kind in the United States
  • 300 clinical studies performed in Year one
  • Currently performing more than 3000 studies per year
  • Have grown from one CMR technologist to three; and one CMR cardiologist to three
  • Originally provided only outpatient services; now provide both inpatient and outpatient services
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LDL Apheresis

Cholesterol is a soft and waxy substance that exists in every cell in our bodies. There are two types of cholesterol: high-density lipoprotein (HDL) which is considered “good cholesterol” and low-density lipoprotein (LDL) also known as “bad cholesterol.”  If we get too much cholesterol, large deposits of LDL collect in our arteries which increases the risk of stroke, heart attack and heart disease. This is when doctors will advise that a change is made to diet, exercise or medication.

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Cardiac CT Scan

Cardiac computed tomography (CT) is an X-ray-based scan principally designed to show the inside of the heart arteries “noninvasively” – without having to put any equipment deep into the body.  Use of cardiac CT for patient care became mainstream in 2005 after several advances made the scan much easier to perform and boosted scan accuracy.  Technology of cardiac CT has improved year-to-year ever since, and more and more doctors are using it to help diagnose heart disease.

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Stanley K. Zimmerman, M.D.

Stanley K. Zimmerman, M.D.


Oklahoma Heart Institute South Pointe
9228 S. Mingo Road Suite 200
Tulsa , OK 74133
Oklahoma Heart Institute Okmulgee
1101 S. Belmont Suite 105
Okmulgee , OK 74447
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