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

Dr. Patrick Grierson, MD

Individual provider Internal Medicine Physician · NPI 1720492192

Dr. Patrick Grierson, MD is a Medical Oncology in Saint Louis, Missouri. Graduated from Ohio State University College of Medicine in 2014, 12 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
12
Trained at
Ohio State University College of Medicine
Licensed in
MO
In the registry since
2014
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

10 Barnes West Dr Div Im Medical Oncology Mob #2
Saint Louis, MO 63141-6287
Phone: (800) 647-2098
Fax: (314) 362-3192
Show map & directions

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

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 2017020379 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2017020379 (MO)

Record details

NPI number1720492192
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2014
Last updated in NPPESApril 17, 2025

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

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