Doctor profile · Federal record

Dr. Karen Koo, MD

Critical Care Medicine (Internal Medicine) Physician (CMS: Critical Care (Intensivists)) · Seattle, WA

  • NPI 1093053019
  • Accepts Medicare
  • MIPS 82.8 / 100 · 2023
  • 22 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
747 Broadway
Seattle, WA 981224379
(206) 205-3408

Credentials & registration

NPPES · NUCC
NPI registered
January 2013 — 13 yrs on file
Profile last updated
February 6, 2015
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207RC0200X — NUCC code
State license (1)
Washington #MD60304936

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1093053019. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
137
Distinct HCPCS
2
Medicare allowed
$28,031
HCPCS Description Services Patients Avg allowed
99291 Critical care, first 30-74 minutes 119 41 $216
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 18 14 $128

In context: peer comparison

Among 19 peers in this city , average services per provider: 73. This provider delivers 1.9× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Karen Koo's medical specialty?
Dr. Karen Koo practices Critical Care Medicine (Internal Medicine) Physician in Seattle, WA.
Where does Dr. Karen Koo practice?
Dr. Karen Koo practices at 747 Broadway, Seattle, WA 981224379. Office phone: 2062053408.
What is Dr. Karen Koo's NPI?
Dr. Karen Koo's National Provider Identifier (NPI) is 1093053019, issued by NPPES.
Does Dr. Karen Koo accept Medicare assignment?
Yes. Dr. Karen Koo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Koo commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.