Summary

Dr. William Nienaber specializes in cardiovascular disease, bringing over two decades of medical expertise to his practice. He earned his medical degree from Creighton University School of Medicine in Omaha, Nebraska, before completing his residency at Barnes-Jewish Hospital at Washington University Medical Center in St. Louis, Missouri in 2008. Dr. Nienaber furthered his training with a fellowship at the same prestigious institution in 2012, developing advanced skills in heart and vascular care. He communicates with patients in both English and Spanish.

Dr. Nienaber practices at Ferguson Medical Group in Sikeston, Missouri, and maintains hospital affiliations with Kimball Health Services. His clinical focus includes treating sleep apnea in both adults and children, addressing obstructive sleep apnea concerns that can impact heart health. He performs essential diagnostic procedures such as electrocardiograms to monitor heart rhythm and conducts blood tests to assess cardiovascular risk factors. Patients consistently rate Dr. Nienaber's care highly, giving him an average rating of 5.0 stars.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 5
  • 21 years of experience
  • 24 insurance plans accepted
  • speaks English, Spanish
  • Barnes-Jewish Hospital at Washington University Medical Center St. Louis MO
  • 2 specialties
  • 14 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

Ferguson Medical Group - Sikeston

1012 N Main StSikeston, MO 63801
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

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William J Nienaber, MDChizor Julian IwuchukwuSteven Joseph CarrDr. Frank William Kroetz, MD
Cardiovascular DiseaseCardiovascular DiseaseCardiovascular DiseaseCardiovascular Disease
Accepts New Patients Accepts New Patients Accepts New Patients
4.3 
3.5 
21 Years of Experience 30 Years of Experience 22 Years of Experience 69 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English, Spanish Speaks English, Spanish
Sikeston , MOCape Girardeau , MOCape Girardeau , MOSikeston , MO
Med School: Creighton University School of Medicine Omaha NE Med School: University Of Lagos Med School: St Louis University School Of Medicine Med School: The Ohio State University
Current Profile
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Insurance Plans Accepted by William J Nienaber

  • Aetna
  • Anthem Blue Cross
  • Anthem Blue Cross and Blue Shield of Georgia
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield - PPO
  • CHAMPVA
  • Cigna
  • Health Net - HMO
  • Humana
  • Medicaid - Medicaid
  • Medicaid - Medicaid (HMO Plans)
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Molina Healthcare
  • Optum Health
  • Piedmont Community Health Plan
  • Transamerica
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - Medicare
  • Well Sense Health Plan

Medical Specialties

William J Nienaber has the following 2 specialties

Specialty Expertise

William J Nienaber has the following 14 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Arrhythmia
  • Atherosclerosis
  • Blood Clot
  • Cardiologist
  • Heart Attack
  • Heart Block
  • Heart Diseases
  • Heart Failure
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • Hypertension
  • Stroke
  • Unstable Angina

Certifications, License, & Education

21 Years Experience

William J Nienaber holds an expired medical license in the state of Missouri.

Medical License

Medical Doctor with an expired medical license in the state of Missouri that expired in 2026.

Education & Training

Fellowship

Completed their fellowship at Barnes-Jewish Hospital at Washington University Medical Center St. Louis MO in 2012.

Residency

Completed their residency at Barnes-Jewish Hospital at Washington University Medical Center St. Louis MO in 2008.

Medical School

Graduated from Creighton University School of Medicine Omaha NE in 2005.

NPI Number

William J Nienaber's NPI number is 1720296940.

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Frequently Asked Questions

Does William Nienaber accept virtual/telehealth appointments?
William Nienaber has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is William Nienaber accepting new patients?
William Nienaber is accepting new patients on Vitals. View William Nienaber's profile on Vitals to make an appointment.
Does William Nienaber accept my insurance?
You can see the insurance plans that William Nienaber accepts on their Vitals profile.
Which hospitals is William Nienaber affiliated with?
William Nienaber is affiliated with Kimball Health Services.
Where is William Nienaber's office located?
William Nienaber's office is located at 1012 N Main St, Sikeston, MO, 63801.

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