Thomas Ryu, DO
NPI 1164477410 · Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Ryu, DO is a Emergency Medical Services (Emergency Medicine) Physician provider in Irvine, CA (NPI 1164477410).
Provider details
- NPI number
- 1164477410
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A5251 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-24
- Last updated
- 2008-02-26
Frequently asked questions
- What is Thomas Ryu's NPI number?
- Thomas Ryu's National Provider Identifier (NPI) is 1164477410, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Ryu's specialty?
- Thomas Ryu is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Ryu located?
- Thomas Ryu's practice location on file with NPPES is 16200 Sand Canyon Ave, Irvine, CA 92618-3714.
- What is Thomas Ryu's phone number?
- The practice phone number listed in the NPPES registry for Thomas Ryu is (949) 753-2000.
- Does Thomas Ryu accept Medicare?
- Thomas Ryu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Ryu's NPI active?
- Yes — Thomas Ryu's NPI (1164477410) is active in the NPPES registry as of the last update on 2008-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.