Quick answers
- Which hospitals does John S. Rankin work at?
- Medicare's official clinician data lists John S. Rankin at 2 hospitals: Round Rock Medical Center and St David's South Austin Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John S. Rankin see patients?
- Medicare's clinician data lists 3 practice locations, including Houston, TX and Round Rock, TX. Call before your visit to confirm the address.
- What is John S. Rankin's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does John S. Rankin accept Medicare assignment?
- Yes. Medicare's clinician data says John S. Rankin 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 John S. Rankin?
- (832) 699-3777, as listed in official Medicare / NPI Registry data.
- What is John S. Rankin's NPI number?
- 1295981033. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John S. Rankin works
Medicare's Facility Affiliation Data lists John S. Rankin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Round Rock Medical CenterRound Rock, TX · Acute Care Hospital · CCN 450718
- St David's South Austin Medical CenterAustin, TX · Acute Care Hospital · CCN 450713
Practice locations
Addresses where John S. Rankin is enrolled with Medicare (CMS data updated 2026-10-02).
- 1014 Wirt Rd, 200 Signaturecare Emergency Center MemorialHouston, TX 77055 (832) 699‑3777
- 2400 Round Rock AveRound Rock, TX 78681 (512) 341‑1000
- 8910 Hwy 6 SHouston, TX 77083 (832) 699‑3777
Group practices
Medicare enrollment lists John S. Rankin as a member of these groups (CMS data updated 2026-10-02).
- Longhorn Emergency Medical Associates PA159 clinicians in the group
- Round Table Physicians Group PLLC80 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295981033 |
| 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