John Chu-Hong Chang, M.D.
Ophthalmology Physician · Pearl River, NY
John Chu-Hong Chang, M.D. is an ophthalmology physician with a practice address in Pearl River, New York, and NPI 1073516027, issued on May 23, 2005. Check the license (New York 225687, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Chu-Hong Chang
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 225687 NY
225687-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 169 N Middletown RD, Pearl River, NY 10965
- Phone
- (845) 735-5666
- Enumerated
- May 23, 2005
- Record last updated
- Apr 5, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (845) 735-5673
- Medicaid ID
- 02362274 NY
- Medicare enrollment
- Enrolled (PECOS I20050620000184); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1998
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Also registered at 169 N Middletown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Adler, D.P.M.Podiatrist1972593994
- Rennie JhingoorSpecialist1275950990
- Michele Leder, MDInternal Medicine Physician1992771877
- Andrew Spinak, M.D.Ophthalmology Physician1558364505
Verify John Chu-Hong Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 225687Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,442 Medicare Part D claims for 438 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of claims.
Most prescribed
- Xiidra153 claims
- Prednisolone Acetate119 claims
- Loteprednol Etabonate95 claims
- Latanoprost94 claims
- Tobramycin-Dexamethasone90 claims
- Neomycin-Polymyxin-Dexameth89 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 MIPS final score for 2023 (Medicare payment program): 5.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,185.51
23 payments; by number, the most common kind was food and beverage; the largest payer was Glaukos Corporation. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Maria Spinak, MD, PCPearl River, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Chu-Hong Chang among 1,822 ophthalmology physician records in New York
John Chu-Hong Chang, M.D. is one of 1,822 ophthalmology physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1998 · median 1995 among the 1,215 with a school on file
- Record last updated2017 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in New York
There are 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Pearl River → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Andrew Spinak, M.D.Pearl River, NY 109651558364505
- Ayman Matta, MDOrangeburg, NY 109621841288388
- Tony Choi, M.D.Pomona, NY 109701861657819
- Sonia Kern, M.D.Pomona, NY 109701316263155
- Hiten Lakhani, M.D.Nyack, NY 109601518138486
- Simeon Lauer, MDPomona, NY 109701790894723
- William Schwartz, M.D.Pomona, NY 109701578524393
- Phyllis Weingarten, M.D.Pomona, NY 109701336229350
Common questions
What is John Chu-Hong Chang, M.D.'s NPI number?
John Chu-Hong Chang, M.D.'s National Provider Identifier (NPI) is 1073516027, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Chu-Hong Chang, M.D. located?
The NPPES record lists a practice address at 169 N Middletown RD, Pearl River, NY, 10965. Phone: (845) 735-5666. Providers update this record themselves, so call before visiting.
How can I verify John Chu-Hong Chang, M.D.'s license?
NPPES lists New York license number 225687, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Chu-Hong Chang, M.D. prescribe under Medicare Part D?
In 2024, John Chu-Hong Chang, M.D. had 1,442 Medicare Part D claims for 438 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Chu-Hong Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 5.4 of 100. 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.