Alexander C. Chang, MD
Ophthalmology Physician · Pittsburgh, PA
Alexander C. Chang, MD is an ophthalmology physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1497808760, issued on Jan 19, 2007. Check the license (Pennsylvania MD019796E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Alexander C. Chang
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- MD019796E PA
Self-reported in NPPES; status is on the state search - Practice location
- 2101 Greentree RD Ste 105, Pittsburgh, PA 15220
- Phone
- (412) 429-2020
- Enumerated
- Jan 19, 2007
- Record last updated
- Jan 28, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (412) 429-0932
- Medicaid ID
- 0007424010005 PA
- Medicare enrollment
- Enrolled (PECOS I20100304000534); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1976
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,088 in Pennsylvania → Look up another NPI →
Also registered at 2101 Greentree RD Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brooke Calle, ODOptometrist1356235378
- Rose Ngan, MDOphthalmology Physician1255453114
Verify Alexander C. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD019796ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average ophthalmology physician in 2024
2,803 Medicare Part D claims for 695 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Latanoprost710 claims
- Lumigan414 claims
- Timolol Maleate261 claims
- Dorzolamide-Timolol165 claims
- Brimonidine Tartrate128 claims
- Xiidra119 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): 73.3 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: $195.39
10 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. 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
- Alexander Chang MD PCPittsbugh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander C. Chang among 1,088 ophthalmology physician records in Pennsylvania
Alexander C. Chang, MD is one of 1,088 ophthalmology physician records with a practice address in Pennsylvania. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 60% of them.
- NPI issued2007 · 60% of these records are older, 33% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1976 · median 2000 among the 734 with a school on file
- Record last updated2008 · 64% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Pennsylvania
There are 1,088 ophthalmology physician records in Pennsylvania.
All 1,088 in Pennsylvania → Every provider in Pittsburgh → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Ramakumar Gounder, MDPittsburgh, PA 152201114996105
- Rose Ngan, MDPittsburgh, PA 152201255453114
- Irving Weinberger, MDPittsburgh, PA 152201861571267
- Omar Abbasi, MDPittsburgh, PA 152191598967630
- Samuel Amoni, MDWilkinsburg, PA 152211578690814
- David Baker, MDPittsburgh, PA 152211205808185
- Oliver Beale, MDPittsburgh, PA 152191275277956
- Tatyana BeketovaPittsburgh, PA 152191366008575
Common questions
What is Alexander C. Chang, MD's NPI number?
Alexander C. Chang, MD's National Provider Identifier (NPI) is 1497808760, issued on Jan 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alexander C. Chang, MD located?
The NPPES record lists a practice address at 2101 Greentree RD Ste 105, Pittsburgh, PA, 15220. Phone: (412) 429-2020. Providers update this record themselves, so call before visiting.
How can I verify Alexander C. Chang, MD's license?
NPPES lists Pennsylvania license number MD019796E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alexander C. Chang, MD prescribe under Medicare Part D?
In 2024, Alexander C. Chang, MD had 2,803 Medicare Part D claims for 695 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Alexander C. Chang, MD's MIPS final score?
The 2023 MIPS final score is 73.3 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.