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

Dr. Carolyn Anne Hilliard, MD

Individual provider Internal Medicine Physician · NPI 1922488261

Dr. Carolyn Anne Hilliard, MD practises Internal Medicine in Saint Louis, Missouri. Graduated from Saint Louis University School of Medicine in 2009, 17 years ago. Practices with Mercy Clinic Adult Hospitalists - St Louis, LLC, a 141-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Iowa and Missouri.

Years since qualifying
17
Trained at
Saint Louis University School of Medicine
Licensed in
IA, MO
In the registry since
2015
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

615 S New Ballas Rd
Saint Louis, MO 63141-8221
Phone: (314) 251-6339
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1400 Us Highway 61, Festus, MO 63028-4100 — (636) 933-5337
  • 10010 Kennerly Rd, Saint Louis, MO 63128-2106 — (314) 525-1328

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2020039468 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD-45074 (IA)

Record details

NPI number1922488261
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2015
Last updated in NPPESJune 13, 2023
Certification dateJune 13, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Mercy Clinic Adult Hospitalists - St. Louis, Llc — 141 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients237
Services billed 599 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Mercy Hospital St Louis Hospital · Saint Louis, MO · listed as Mercy Hospitals East Communities Mercy Hospital St Louis

Colleagues at Mercy Clinic Adult Hospitalists - St Louis, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 141 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis