Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. William Joseph Nienaber, MD

Individual provider Cardiovascular Disease Physician · NPI 1720296940

Dr. William Joseph Nienaber, MD is a Cardiovascular Disease (Cardiology) in Cape Girardeau, Missouri. Graduated from Creighton University School of Medicine in 2005, 21 years ago. Practices with Saint Francis Medical Center, a 441-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
21
Trained at
Creighton University School of Medicine
Licensed in
MO
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

211 Saint Francis Dr Ste 15
Cape Girardeau, MO 63703-5049
Phone: (573) 331-3333
Fax: (573) 331-3334
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 2007033628 (MO)

Record details

NPI number1720296940
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 20, 2007
Last updated in NPPESMarch 1, 2021
Certification dateMarch 1, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Saint Francis Medical Center — 441 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations25 on file with Medicare

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