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

Individual provider Orthopaedic Surgery Physician · NPI 1710980750

Mark K Keohane, MD is an Orthopedic Surgery in O Fallon, Missouri. Graduated from Saint Louis University School of Medicine in 1971, 55 years ago. Practices with McPherson Medical and Diagnostic LLC, a 85-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
55
Trained at
Saint Louis University School of Medicine
Licensed in
MO
In the registry since
2005
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

9323 Phoenix Village Pkwy
O Fallon, MO 63366-4281
Phone: (636) 561-5030
Fax: (636) 561-5033
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 34653 (MO)

Record details

NPI number1710980750
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2005
Last updated in NPPESMarch 1, 2012
Mailing address9323 Phoenix Village Pkwy, O Fallon, MO 63366-4281

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1971 (55 years in practice)
Group practice McPherson Medical And Diagnostic Llc — 85 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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