Quick answers
- Which hospitals does Ronald Chang work at?
- Medicare's official clinician data lists Ronald Chang at 2 hospitals: AD Hospital East and Baytown Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ronald Chang see patients?
- Medicare's clinician data lists 3 practice locations, including Houston, TX. Call before your visit to confirm the address.
- What is Ronald Chang's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Ronald Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald Chang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Ronald Chang?
- (713) 795-4884, as listed in official Medicare / NPI Registry data.
- What is Ronald Chang's NPI number?
- 1639411150. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ronald Chang works
Medicare's Facility Affiliation Data lists Ronald Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AD Hospital EastHouston, TX · Acute Care Hospital · CCN 670102
- Baytown Medical CenterBaytown, TX · Acute Care Hospital · CCN 670109
Practice locations
Addresses where Ronald Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 4200 Twelve Oaks DrHouston, TX 77027 (713) 795‑4884
- 511 W TidwellHouston, TX 77091 (281) 586‑3888
- 837 Cypress Creek Pkwy, Suite 105Houston, TX 77090 (281) 586‑3888
Group practices
Medicare enrollment lists Ronald Chang as a member of these groups (CMS data updated 2026-10-02).
- Advanced Surgeons and Physicians Network Inc61 clinicians in the group
- 1960 Physician Associates18 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639411150 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians