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

Dr. John Gregory Markley, MD

Individual provider Surgery Physician · NPI 1932190980

Dr. John Gregory Markley, MD is a Cardiac Surgery in Columbia, Missouri. Graduated from Medical College of Wisconsin in 1992, 34 years ago. Practices with The Curators of the University of Missouri, a 1,093-clinician group and accepts Medicare assignment. Licensed in California, Missouri and Wisconsin.

Years since qualifying
34
Trained at
Medical College of Wisconsin
Licensed in
CA, MO, WI
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

One Hospital Dr
Columbia, MO 65212-0001
Phone: (573) 882-6955
Fax: (573) 884-0437
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 2002023140 (MO)
Surgery Physician Taxonomy 208600000X · Licence G85299 (CA)
Surgery Physician Taxonomy 208600000X · Licence 34541-020 (WI)

Record details

NPI number1932190980
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 31, 2005
Last updated in NPPESMarch 29, 2018
Mailing addressPo Box 843966, Kansas City, MO 64184-3966

Medicare enrollment

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

Medicare specialtyCARDIAC SURGERY
Also practisesTHORACIC SURGERY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1992 (34 years in practice)
Group practice The Curators Of The University Of Missouri — 1093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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