Won S. Chang, MD
Radiation Oncology Physician · Philadelphia, PA
Won S. Chang, MD is a radiation oncology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1992787618, issued on Nov 17, 2005. Check the license (Pennsylvania MD071181L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Won S. Chang
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- MD071181L PA
Self-reported in NPPES; status is on the state search - Practice location
- 9910 Roosevelt Blvd, Philadelphia, PA 19115
- Phone
- (215) 658-4669
- Enumerated
- Nov 17, 2005
- Record last updated
- Feb 17, 2022
- Fax
- (215) 671-4307
- Medicaid IDs
- 0018183900003 PA
0018183900001 PA - Medicare enrollment
- Enrolled (PECOS I20100423000738); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 383 in Pennsylvania → Look up another NPI →
Verify Won S. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD071181LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average radiation oncology physician in 2024
78 Medicare Part D claims for 37 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 12 claims were for opioids.
Most prescribed
- Dexamethasone16 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.
Industry payments in 2024: $1,047.80
15 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 3,275 providers of this specialty with any payment received $1,897.85 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 2 group practices
- Einstein Practice Plan IncPhila, PA
- Methodist Associates IN Healthcare, IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Won S. Chang among 383 radiation oncology physician records in Pennsylvania
Won S. Chang, MD is one of 383 radiation oncology physician records with a practice address in Pennsylvania. 82% 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, 83% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1995 · median 2004 among the 285 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Pennsylvania
There are 383 radiation oncology physician records in Pennsylvania.
All 383 in Pennsylvania → Every provider in Philadelphia → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Scot Fisher, D.O.Philadelphia, PA 191141780606202
- Eric Gressen, M.D.Philadelphia, PA 191141144242660
- Shari Rudoler, M.D.Philadelphia, PA 191141972525400
- William Grizos, MDPhiladelphia, PA 191181811910854
- Alyssa Asaro, MDPhiladelphia, PA 191111477355725
- Vladimir Avkshtol, MDPhiladelphia, PA 191111972921062
- Lynn Chang, MDPhiladelphia, PA 191111568711505
- Abigail CopellaPhiladelphia, PA 191111619409638
Common questions
What is Won S. Chang, MD's NPI number?
Won S. Chang, MD's National Provider Identifier (NPI) is 1992787618, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Won S. Chang, MD located?
The NPPES record lists a practice address at 9910 Roosevelt Blvd, Philadelphia, PA, 19115. Phone: (215) 658-4669. Providers update this record themselves, so call before visiting.
How can I verify Won S. Chang, MD's license?
NPPES lists Pennsylvania license number MD071181L, 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 Won S. Chang, MD prescribe under Medicare Part D?
In 2024, Won S. Chang, MD had 78 Medicare Part D claims for 37 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.