Quick answers
- Which hospitals does Preston Ooi work at?
- Medicare's official clinician data lists Preston Ooi at 2 hospitals: AdventHealth Central Texas and Seton Medical Center Harker Heights. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Preston Ooi see patients?
- Medicare's clinician data lists 2 practice locations, including Round Rock, TX and Killeen, TX. Call before your visit to confirm the address.
- What is Preston Ooi's specialty?
- Medicare lists Physical Medicine and Rehabilitation as the primary specialty.
- Does Preston Ooi accept Medicare assignment?
- Yes. Medicare's clinician data says Preston Ooi 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.
- Does Preston Ooi offer telehealth?
- Medicare's clinician data says Preston Ooi offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Preston Ooi?
- (512) 244-4272, as listed in official Medicare / NPI Registry data.
- What is Preston Ooi's NPI number?
- 1922663335. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Preston Ooi works
Medicare's Facility Affiliation Data lists Preston Ooi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth Central TexasKilleen, TX · Acute Care Hospital · CCN 450152
- Seton Medical Center Harker HeightsHarker Heights, TX · Acute Care Hospital · CCN 670080
Practice locations
Addresses where Preston Ooi is enrolled with Medicare (CMS data updated 2026-10-02).
- 2000 S Mays St, Suite 201Round Rock, TX 78664 (512) 244‑4272
- 3400 E Central Texas Expy, Suite 101Killeen, TX 76543 (254) 741‑6641
Group practices
Medicare enrollment lists Preston Ooi as a member of this group (CMS data updated 2026-10-02).
- Mark Malone MD PA103 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in Texas →
Other rehabilitation doctors in Round Rock
Clinicians with the same Medicare primary specialty in Round Rock, TX — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1922663335 |
| 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