John Hwang, MD
Retina Specialist (Ophthalmology) Physician · Laguna Hills, CA
John Hwang, MD is a retina specialist (ophthalmology) physician with a practice address in Laguna Hills, California, and NPI 1629235510, issued on May 19, 2008. Check the license (California A112582, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Hwang
- Credential
- MD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- A112582 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23521 Paseo DE Valencia, Laguna Hills, CA 92653
- Phone
- (949) 707-5125
- Enumerated
- May 19, 2008
- Record last updated
- Mar 27, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110525000266); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2005
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 205 in California → Look up another NPI →
Also registered at 23521 Paseo DE Valencia
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jennifer Carman, P.T.Physical Therapist1285827717
- Lido Chen, MDInterventional Pain Medicine Physician1891781753
- Priscilla Chow, NPFamily Nurse Practitioner1376510743
- Lori ClarkInternal Medicine Physician1972634897
- Charles Eifrig, M.D.Retina Specialist (Ophthalmology) Physician1306812979
Verify John Hwang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112582Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
514 Medicare Part D claims for 129 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Prednisolone Acetate230 claims
- Ketorolac Tromethamine151 claims
- Dorzolamide-Timolol29 claims
- Tobramycin-Dexamethasone27 claims
- Atropine Sulfate18 claims
- Brimonidine Tartrate16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $295.49
4 payments; by number, the most common kind was food and beverage; the largest payer was Cardinal Health 110 LLC. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Retina Associates OF Orange CountySanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Hwang among 205 retina specialist (ophthalmology) physician records in California
John Hwang, MD is one of 205 retina specialist (ophthalmology) physician records with a practice address in California. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 50% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileYes · 92% of these records are
- Graduated2005 · median 2007 among the 189 with a school on file
- Record last updated2017 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in California
There are 205 retina specialist (ophthalmology) physician records in California.
All 205 in California → Every provider in Laguna Hills → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Charles Eifrig, M.D.Laguna Hills, CA 926531306812979
- John Lean, M D F R C SLaguna Hills, CA 926531962513465
- Hani Salehi-Had, M.D.Huntington Beach, CA 926471306909403
- Nathan Rudometkin, MDLaguna Woods, CA 926371225128994
- Nadeem Vaidya, M.D.Irvine, CA 926181578616520
- Andrew Browne, M.D., PH.D.Irvine, CA 926171154615383
- Baruch Kuppermann, MDIrvine, CA 926171326128455
- Stephanie Lu, MDIrvine, CA 926171346420437
Common questions
What is John Hwang, MD's NPI number?
John Hwang, MD's National Provider Identifier (NPI) is 1629235510, issued on May 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John Hwang, MD located?
The NPPES record lists a practice address at 23521 Paseo DE Valencia, Laguna Hills, CA, 92653. Phone: (949) 707-5125. Providers update this record themselves, so call before visiting.
How can I verify John Hwang, MD's license?
NPPES lists California license number A112582, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Hwang, MD prescribe under Medicare Part D?
In 2024, John Hwang, MD had 514 Medicare Part D claims for 129 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is John Hwang, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.