Doctor profile · Federal record

Dr. Thomas Ryu, DO

Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA

  • NPI 1164477410
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
16200 Sand Canyon Ave
Irvine, CA 926183714
(949) 753-2000
Mailing address
24661 Royal Ridge
Laguna Niguel, CA 92677

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
February 26, 2008
Specialty taxonomy
207PE0004X — NUCC code
State license (1)
California #20A5251
Medicaid
CA #00AX52510

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1164477410. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
242
Distinct HCPCS
4
Medicare allowed
$28,647
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 115 86 $98
99203 New patient office or other outpatient visit, 30-44 minutes 68 68 $122
99214 Established patient office or other outpatient visit, 30-39 minutes 38 34 $139
99204 New patient office or other outpatient visit, 45-59 minutes 21 21 $180

In context: peer comparison

Among 1 peers in this city , average services per provider: 60. This provider delivers 4.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
162
Patients
148
Total drug cost
$1,757
Drug Type Claims Patients Total cost
Azithromycin Generic 60 59 $260
Cephalexin Generic 49 48 $938
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 18 17 $200
Ciprofloxacin Hcl Generic 13 13 $67
Methylprednisolone Generic 11 11 $76
Valacyclovir (Valacyclovir Hcl) Brand 11 0 $216

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Ryu's medical specialty?
Dr. Thomas Ryu practices Emergency Medical Services (Emergency Medicine) Physician in Irvine, CA.
Where does Dr. Thomas Ryu practice?
Dr. Thomas Ryu practices at 16200 Sand Canyon Ave, Irvine, CA 926183714. Office phone: 9497532000.
What is Dr. Thomas Ryu's NPI?
Dr. Thomas Ryu's National Provider Identifier (NPI) is 1164477410, issued by NPPES.
What procedures does Dr. Thomas Ryu commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.