Doctor profile · Federal record

Dr. Stephen Ko, M.D.

Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Honolulu, HI

  • NPI 1972568236
  • Accepts Medicare
  • MIPS 57.6 / 100 · 2023
  • 35 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
347 N Kuakini St
Honolulu, HI 968172306
(808) 522-0190
fax (808) 523-9068
Mailing address
321 N Kuakini St, Suite 405
Honolulu, HI 968172364

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
February 7, 2017
Year of graduation
1991 — 35 yrs since
Specialty taxonomy
2085R0202X — NUCC code
State license (1)
Hawaii #MD11118
Medicaid (2)
HI #0049493001 · HI #0049493002

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1972568236. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
4,919
Distinct HCPCS
10
Medicare allowed
$162,815
HCPCS Description Services Patients Avg allowed
77067 Screening mammography 959 959 $37
77063 Screening 3d breast mammography 746 746 $29
71045 X-ray of chest, 1 view 536 449 $9
70450 Ct scan head or brain without contrast 251 234 $40
71046 X-ray of chest, 2 views 223 218 $11
77080 Dxa bone density measurement of hip, pelvis, spine 175 175 $10
71250 Ct scan of chest without contrast 155 152 $52
74177 Ct scan of abdomen and pelvis with contrast 128 121 $88
76642 Limited ultrasound scan of 1 breast 112 105 $34
77065 Diagnostic mammography of 1 breast 112 105 $39

In context: peer comparison

Among 30 peers in Honolulu Diagnostic Radiology Physician, average services per provider: 84. This provider delivers 59× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
13
Patients
0
Total drug cost
$15
Drug Type Claims Patients Total cost
Prednisone Generic 13 0 $15

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Stephen Ko's medical specialty?
Dr. Stephen Ko practices Diagnostic Radiology Physician in Honolulu, HI.
Where does Dr. Stephen Ko practice?
Dr. Stephen Ko practices at 347 N Kuakini St, Honolulu, HI 968172306. Office phone: 8085220190.
What is Dr. Stephen Ko's NPI?
Dr. Stephen Ko's National Provider Identifier (NPI) is 1972568236, issued by NPPES.
Does Dr. Stephen Ko accept Medicare assignment?
Yes. Dr. Stephen Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Ko commonly perform?
Top Medicare-reported procedures in 2023: Screening mammography (HCPCS 77067); Screening 3d breast mammography (HCPCS 77063); X-ray of chest, 1 view (HCPCS 71045). Source: CMS Medicare Physician & Other Practitioners file.