Emmanuel Yih-Herng Chang, MD/PHD
Retina Specialist (Ophthalmology) Physician · Bellaire, TX
Emmanuel Yih-Herng Chang, MD/PHD is a retina specialist (ophthalmology) physician with a practice address in Bellaire, Texas, and NPI 1083877740, issued on Jul 3, 2008. Check the license (Texas P5786, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Emmanuel Yih-Herng Chang
- Credential
- MD/PHD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- P5786 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6565 West Loop S Ste 400, Bellaire, TX 77401
- Phone
- (713) 799-9975
- Enumerated
- Jul 3, 2008
- Record last updated
- Oct 22, 2024
- Fax
- (713) 799-1095
- Medicaid IDs
- 1083877740 MI
322767002 TX
322767003 TX
322767004 TX - Medicare enrollment
- Enrolled (PECOS I20130807000073); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 107 in Texas → Look up another NPI →
Also registered at 6565 West Loop S Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Muhammad AmjadOphthalmology Physician1558030916
- Victor Chen, MDRetina Specialist (Ophthalmology) Physician1356929251
- Angela Kim, MDRetina Specialist (Ophthalmology) Physician1437654159
- Prethy Rao, MDOphthalmology Physician1982967998
Verify Emmanuel Yih-Herng Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P5786Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average retina specialist (ophthalmology) physician in 2024
1,240 Medicare Part D claims for 282 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost379 claims
- Dorzolamide-Timolol203 claims
- Prednisolone Acetate151 claims
- Brimonidine Tartrate80 claims
- Ketorolac Tromethamine71 claims
- Ofloxacin45 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: $53,205.93
69 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. 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 And Vitreous OF Texas PLLCBellaire, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emmanuel Yih-Herng Chang among 107 retina specialist (ophthalmology) physician records in Texas
Emmanuel Yih-Herng Chang, MD/PHD is one of 107 retina specialist (ophthalmology) physician records with a practice address in Texas. 96% 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, 48% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 90% of these records are
- Graduated2007 · median 2006 among the 96 with a school on file
- Record last updated2024 · 30% 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 Texas 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 Texas
There are 107 retina specialist (ophthalmology) physician records in Texas.
All 107 in Texas → Every provider in Bellaire → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Victor Chen, MDBellaire, TX 774011356929251
- Joseph Christiansen, M.D.Bellaire, TX 774011306075619
- Ting Fang-Suarez, M.D.Bellaire, TX 774011124021498
- Angela Kim, MDBellaire, TX 774011437654159
- Paul Stewart, MDBellaire, TX 774011508028523
- Murtaza Mandviwala, MDTomball, TX 773751881198133
- Shahin Faghihi Habibabadi, MDGalveston, TX 775501255259370
- Andrew Farag, MDGalveston, TX 775501346085461
Common questions
What is Emmanuel Yih-Herng Chang, MD/PHD's NPI number?
Emmanuel Yih-Herng Chang, MD/PHD's National Provider Identifier (NPI) is 1083877740, issued on Jul 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Emmanuel Yih-Herng Chang, MD/PHD located?
The NPPES record lists a practice address at 6565 West Loop S Ste 400, Bellaire, TX, 77401. Phone: (713) 799-9975. Providers update this record themselves, so call before visiting.
How can I verify Emmanuel Yih-Herng Chang, MD/PHD's license?
NPPES lists Texas license number P5786, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Emmanuel Yih-Herng Chang, MD/PHD prescribe under Medicare Part D?
In 2024, Emmanuel Yih-Herng Chang, MD/PHD had 1,240 Medicare Part D claims for 282 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Emmanuel Yih-Herng Chang, MD/PHD'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.