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

Stephen Ko, MD

Individual provider Diagnostic Radiology Physician · NPI 1972568236

Stephen Ko, MD practises Diagnostic Radiology in Honolulu, Hawaii. Graduated from University of California, San Diego School of Medicine in 1991, 35 years ago. Practices with Pacific Radiology Group Inc, a 30-clinician group and accepts Medicare assignment. Licensed in Hawaii.

Years since qualifying
35
Trained at
University of California, San Diego School of Medicine
Licensed in
HI
In the registry since
2006
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

347 N Kuakini St
Honolulu, HI 96817-2306
Phone: (808) 522-0190
Fax: (808) 523-9068
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence MD11118 (HI)

Record details

NPI number1972568236
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 19, 2006
Last updated in NPPESFebruary 7, 2017

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Pacific Radiology Group Inc — 30 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 patients3,512
Services billed 5,881 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Colleagues at Pacific Radiology Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

Other providers in Honolulu