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

Zachary Joel Treat, MD

Individual provider Hospitalist Physician · NPI 1447743083

Zachary Joel Treat, MD is a Family Practice in Saint Louis, Missouri. Graduated from University of Missouri, Columbia School of Medicine in 2018, 8 years ago. Practices with St Anthonys Physician Organization Hospitalist Services Lc, a 139-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Iowa and Missouri.

Years since qualifying
8
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
IA, MO
In the registry since
2018
Specialties on file
2
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

10010 Kennerly Rd
Saint Louis, MO 63128-2106
Phone: (314) 525-1328
Show map & directions

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

Additional practice locations (3)

  • 1400 Us Highway 61, Festus, MO 63028-4100 — (636) 933-5337
  • 615 S New Ballas Rd, Saint Louis, MO 63141-8221 — (314) 251-6339
  • 901 E 5th St, Washington, MO 63090-3127 — (636) 239-8231

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2020035229 (MO)
Hospitalist Physician Taxonomy 208M00000X · Licence 50495 (IA)

Record details

NPI number1447743083
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 8, 2018
Last updated in NPPESJanuary 19, 2026
Certification dateJanuary 19, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice St Anthonys Physician Organization Hospitalist Services Lc — 139 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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