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

Felix Nau Jr, MD

Individual provider Hospitalist Physician · NPI 1932632544

Felix Nau Jr, MD is a Hospitalist in Washington, Missouri. Qualified in 2009, 17 years ago. Practices with Mercy Clinic Adult Hospitalists - Washington, LLC, a 31-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
17
Licensed in
MO
In the registry since
2017
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

901 E 5th St
Washington, MO 63090-3127
Phone: (636) 239-8231
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 615 S New Ballas Rd, Saint Louis, MO 63141-8221 — (314) 251-6339

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2020015141 (MO)
Hospitalist Physician Taxonomy 208M00000X · Licence 2020015141 (MO)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1932632544
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 10, 2017
Last updated in NPPESSeptember 19, 2023
Certification dateSeptember 19, 2023

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Mercy Clinic Adult Hospitalists - Washington, Llc — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Washington