Chang-Woo Jang, MD
Emergency Medicine Physician · San Antonio, TX
Chang-Woo Jang, MD is an emergency medicine physician with a practice address in San Antonio, Texas, and NPI 1386216356, issued on Jul 10, 2021. Check the license on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Chang-Woo Jang
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 35.150131 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3551 Roger Brooke Dr, San Antonio, TX 78234
- Phone
- (109) 168-7642
- Enumerated
- Jul 10, 2021
- Record last updated
- Jun 24, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 3551 Roger Brooke Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jamilia Adams-Henderson, CRNACertified Registered Nurse Anesthetist1518211176
- Mabel Aguirre, IDMTIndependent Duty Medical Technicians1083009179
- Alejandro Alejandrez CisnerosGeneral Practice Physician1518568161
Verify Chang-Woo Jang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average emergency medicine physician in 2024
174 Medicare Part D claims for 100 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Ibuprofen18 claims
- Methocarbamol15 claims
- Prednisone13 claims
- Ondansetron Hcl12 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.
Chang-Woo Jang among 4,885 emergency medicine physician records in Texas
Chang-Woo Jang, MD is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 88% of them.
- NPI issued2021 · 88% of these records are older, 8% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
400 emergency medicine physician records list a practice address in San Antonio
They are 400 of the 37,749 NPPES records with a practice address in San Antonio, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in San Antonio → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Eric Chin, M.D.Fort Sam Houston, TX 782341447240411
- Marc Daymude, M.D.Fort Sam Houston, TX 782341821089806
- Gary Dufresne, DOFort Sam Houston, TX 782341689664930
- David Foss, MDSan Antonio, TX 782341669454880
- Guyon Hill, M.D.Fort Sam Houston, TX 782341629059316
- Michael Hilliard, MDFort Sam Houston, TX 782341538140397
- Curtis Hunter, M.D.Fort Sam Houston, TX 782341447241427
- Sean Meadows, M.D.Fort Sam Houston, TX 782341770560039
Common questions
What is Chang-Woo Jang, MD's NPI number?
Chang-Woo Jang, MD's National Provider Identifier (NPI) is 1386216356, issued on Jul 10, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Chang-Woo Jang, MD located?
The NPPES record lists a practice address at 3551 Roger Brooke Dr, San Antonio, TX, 78234. Phone: (109) 168-7642. Providers update this record themselves, so call before visiting.
How can I verify Chang-Woo Jang, MD's license?
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 Chang-Woo Jang, MD prescribe under Medicare Part D?
In 2024, Chang-Woo Jang, MD had 174 Medicare Part D claims for 100 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.