Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Patrick Clarke Keller, MD

Individual provider Internal Medicine Physician · NPI 1972181188

Patrick Clarke Keller, MD is an Internal Medicine Physician in Saint Louis, Missouri. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2021
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

915 N Grand Blvd
Saint Louis, MO 63106-1621
Phone: (314) 652-4100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 N Westmoreland Rd, Lake Forest, IL 60045-1658 — (847) 234-5600

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036167282 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125077372 (IL)

Record details

NPI number1972181188
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2021
Last updated in NPPESSeptember 29, 2026
Certification dateSeptember 29, 2026

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 patients162
Services billed 441 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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.

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