Quick answers
- Which hospitals does David Ly work at?
- Medicare's official clinician data lists David Ly at 1 hospital: HCA Houston Healthcare West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David Ly see patients?
- Medicare's clinician data lists 3 practice locations, including Houston, TX, League City, TX and The Woodlands, TX. Call before your visit to confirm the address.
- What is David Ly's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does David Ly accept Medicare assignment?
- Yes. Medicare's clinician data says David Ly 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 David Ly?
- (281) 558-3444, as listed in official Medicare / NPI Registry data.
- What is David Ly's NPI number?
- 1588240949. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David Ly works
Medicare's Facility Affiliation Data lists David Ly 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 WestHouston, TX · Acute Care Hospital · CCN 450644
Practice locations
Addresses where David Ly is enrolled with Medicare (CMS data updated 2026-10-02).
- 12141 Richmond AveHouston, TX 77082 (281) 558‑3444
- 2555 Gulf Fwy S, C1 100 Memorial Hermann EmergencyLeague City, TX 77573 (713) 338‑6565
- 9950 Woodlands Pkwy, Memorial Hermann Emergency PhysiciansThe Woodlands, TX 77382 (713) 338‑6565
Group practices
Medicare enrollment lists David Ly as a member of these groups (CMS data updated 2026-10-02).
- Emergency Medicine Services of TX, PLLC400 clinicians in the group
- Memorial Hermann Hospital Based Physician Group276 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 |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588240949 |
| 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