Quick answers
- Which hospitals does Stevenson C. Tsiao work at?
- Medicare's official clinician data lists Stevenson C. Tsiao at 4 hospitals: HCA Houston Healthcare Medical Center, HCA Houston Healthcare Pearland, Longview Regional Medical Center and MercyOne North Iowa Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stevenson C. Tsiao see patients?
- Medicare's clinician data lists 5 practice locations, including Mason City, IA, Waterloo, IA and Houston, TX. Call before your visit to confirm the address.
- What is Stevenson C. Tsiao's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Stevenson C. Tsiao accept Medicare assignment?
- Yes. Medicare's clinician data says Stevenson C. Tsiao 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 Stevenson C. Tsiao?
- (319) 272-5000, as listed in official Medicare / NPI Registry data.
- What is Stevenson C. Tsiao's NPI number?
- 1124489034. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stevenson C. Tsiao works
Medicare's Facility Affiliation Data lists Stevenson C. Tsiao at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Houston Healthcare Medical CenterHouston, TX · Acute Care Hospital · CCN 450659
- HCA Houston Healthcare PearlandPearland, TX · Acute Care Hospital · CCN 670106
- Longview Regional Medical CenterLongview, TX · Acute Care Hospital · CCN 450702
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · CCN 160064
Practice locations
Addresses where Stevenson C. Tsiao is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 4th St SWMason City, IA 50401
- 2710 Saint Francis Dr, Suite 410Waterloo, IA 50702 (319) 272‑5000
- 5115 Fannin St, Suite 950Houston, TX 77004 (713) 493‑7700
- 515 College St, Suite 2800Cedar Falls, IA 50613 (319) 268‑3990
- 635 E US Hwy 9, Mercyone Forest City Family MedicineForest City, IA 50436 (641) 585‑2904
Group practices
Medicare enrollment lists Stevenson C. Tsiao as a member of these groups (CMS data updated 2026-10-02).
- North Iowa Mercy Clinics302 clinicians in the group
- Covenant Medical Center Inc235 clinicians in the group
- Texas Laparoscopic Consultants, LLP4 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Mason City
Clinicians with the same Medicare primary specialty in Mason City, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas Tech University Health Science Center School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124489034 |
| 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