Frank Gisang Ryu
Hearing Instrument Specialist · Irvine, CA
Frank Gisang Ryu is a hearing instrument specialist with a practice address in Irvine, California, and NPI 1245512607, issued on Sep 12, 2011. Check the license (California HA7668, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Frank Gisang Ryu
- Primary taxonomy
- Hearing Instrument Specialist 237700000X
- License number
- HA7668 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14795 Jeffrey RD, Irvine, CA 92618
- Phone
- (949) 398-7315
- Enumerated
- Sep 12, 2011
- Record last updated
- Dec 16, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (949) 398-7314
- Entity
- Type 1 · individual
8 nearest hearing instrument specialist records → All 994 in California → Look up another NPI →
Also registered at 14795 Jeffrey RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Frank Gisang Ryu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license HA7668Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Frank Gisang Ryu among 994 hearing instrument specialist records in California
Frank Gisang Ryu is one of 994 hearing instrument specialist records with a practice address in California. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2011, is newer than 28% of them.
- NPI issued2011 · 28% of these records are older, 68% newer
- In a Medicare fileNo · under 1% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 237700000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hearing Instrument Specialist providers in California
There are 994 hearing instrument specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 994 in California → Every provider in Irvine → Hearing Instrument Specialist nationwide →
The 8 hearing instrument specialist records with the nearest ZIP codes
- Kevin KimIrvine, CA 926181154092757
- Sean Seal-Horowitz, HISIrvine, CA 926181023738978
- Jason BalsomIrvine, CA 926141700181815
- Clayton ParkIrvine, CA 926141689003683
- Shauna Land, BC-HISIrvine, CA 926121659887818
- Gina BernardinoCosta Mesa, CA 926261184917130
- Nathan Evans, H.I.S.Costa Mesa, CA 926261730580267
- Mohammad FardghassemiCosta Mesa, CA 926271871900399
Common questions
What is Frank Gisang Ryu's NPI number?
Frank Gisang Ryu's National Provider Identifier (NPI) is 1245512607, issued on Sep 12, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Frank Gisang Ryu located?
The NPPES record lists a practice address at 14795 Jeffrey RD, Irvine, CA, 92618. Phone: (949) 398-7315. Providers update this record themselves, so call before visiting.
How can I verify Frank Gisang Ryu's license?
NPPES lists California license number HA7668, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.