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

Stephen Ko, MD

Individual provider Radiation Oncology Physician · NPI 1134183304

Stephen Ko, MD practises Radiation Oncology in Jacksonville, Florida. Graduated from University of Texas at Austin Dell Medical School in 1999, 27 years ago. Practices with SSM Regional Health Services, a 166-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida and Missouri.

Years since qualifying
27
Trained at
University of Texas at Austin Dell Medical School
Licensed in
FL, MO
In the registry since
2006
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

4500 San Pablo Rd S
Jacksonville, FL 32224-1865
Phone: (904) 953-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1241 W Stadium Blvd, Jefferson City, MO 65109-6023 — (573) 635-2282

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence ME90642 (FL)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 2025045903 (MO)

Record details

NPI number1134183304
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2006
Last updated in NPPESDecember 19, 2025
Certification dateDecember 19, 2025

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF TEXAS AT AUSTIN DELL MEDICAL SCHOOL
Graduated 1999 (27 years in practice)
Group practice Ssm Regional Health Services — 166 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients157
Services billed 970 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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. Those with a page here are linked.

  • Stone County Medical Center Hospital · Mountain View, AR · listed as Stone County Medical Supply
  • Ssm Health St. Mary'S Hospital - Jefferson City Hospital · Jefferson City, MO
  • White River Medical Center Hospital · Batesville, AR

Colleagues at SSM Regional Health Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 166 clinicians in the practice; 12 are shown here.

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