Amy Chang, M.D.
Internal Medicine Physician · West Chester, PA
Amy Chang, M.D. is an internal medicine physician with a practice address in West Chester, Pennsylvania, and NPI 1033320023, issued on May 24, 2007. Check the license (Pennsylvania MD437050, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Amy Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD437050 PA
Self-reported in NPPES; status is on the state search - Practice location
- 520 Maple Ave, West Chester, PA 19380
- Phone
- (484) 364-2824
- Enumerated
- May 24, 2007
- Record last updated
- Mar 23, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (610) 350-3099
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 520 Maple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amy Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD437050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 86.8 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).
Amy Chang among 7,300 internal medicine physician records in Pennsylvania
Amy Chang, M.D. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2017 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 internal medicine physician records list a practice address in West Chester
They are 57 of the 2,831 NPPES records with a practice address in West Chester, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in West Chester → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Douglas Atlas, MDWest Chester, PA 193801932168895
- Helise Bichefsky, DOWest Chester, PA 193801770533267
- Donald Emery, MDWest Chester, PA 193801730139130
- Renee Giometti, MDWest Chester, PA 193801639129208
- Dwight Johnson, DOWest Chester, PA 193801598738833
- Edward Ma, MDWest Chester, PA 193801730153081
- Martye Marshall, MDWest Chester, PA 193801841253648
- Richard Oyelewu, MDWest Chester, PA 193801659345601
Common questions
What is Amy Chang, M.D.'s NPI number?
Amy Chang, M.D.'s National Provider Identifier (NPI) is 1033320023, issued on May 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Amy Chang, M.D. located?
The NPPES record lists a practice address at 520 Maple Ave, West Chester, PA, 19380. Phone: (484) 364-2824. Providers update this record themselves, so call before visiting.
How can I verify Amy Chang, M.D.'s license?
NPPES lists Pennsylvania license number MD437050, 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.
What is Amy Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.8 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.