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

Dr. Joshua Casey Mayer, DO

Individual provider Hospitalist Physician · NPI 1679837322

Dr. Joshua Casey Mayer, DO is a Hospitalist in Saint Louis, Missouri. Graduated from Kansas City University of Physicians and Surgeons in 2012, 14 years ago. Practices with SSM Health Care Group, a 923-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
14
Trained at
Kansas City University of Physicians and Surgeons
Licensed in
MO
In the registry since
2012
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1201 S Grand Blvd
Saint Louis, MO 63104-1016
Phone: (314) 257-8000
Fax: (314) 577-8019
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2018014496 (MO)
Hospitalist Physician Taxonomy 208M00000X · Licence 2018014496 (MO)

Record details

NPI number1679837322
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 27, 2012
Last updated in NPPESFebruary 12, 2021
Certification dateJanuary 25, 2021

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolKANSAS CITY UNIVERSITY OF PHYSICIANS AND SURGEONS
Graduated 2012 (14 years in practice)
Group practice Ssm Health Care Group — 923 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Saint Louis