Chang-Woo Jang, MD
NPI 1386216356 · Emergency Medicine Physician · San Antonio, TX
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chang-Woo Jang, MD is a Emergency Medicine Physician provider in San Antonio, TX (NPI 1386216356).
Provider details
- NPI number
- 1386216356
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 18 | 18 |
| Methocarbamol | 15 | 14 |
| Prednisone | 13 | 13 |
| Ondansetron Hcl | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-07-10
- Last updated
- 2025-07-11
- Certified
- 2025-07-11
Frequently asked questions
- What is Chang-Woo Jang's NPI number?
- Chang-Woo Jang's National Provider Identifier (NPI) is 1386216356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chang-Woo Jang's specialty?
- Chang-Woo Jang is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chang-Woo Jang located?
- Chang-Woo Jang's practice location on file with NPPES is 3551 Roger Brooke Dr, San Antonio, TX 78234-4504.
- What is Chang-Woo Jang's phone number?
- The practice phone number listed in the NPPES registry for Chang-Woo Jang is (109) 168-7642.
- Does Chang-Woo Jang accept Medicare?
- Chang-Woo Jang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chang-Woo Jang's NPI active?
- Yes — Chang-Woo Jang's NPI (1386216356) is active in the NPPES registry as of the last update on 2025-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.