Quick answers
- Where does William L. Decker see patients?
- Medicare's clinician data lists 2 practice locations, including Angleton, TX and Houston, TX. Call before your visit to confirm the address.
- What is William L. Decker's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does William L. Decker accept Medicare assignment?
- Yes. Medicare's clinician data says William L. Decker 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 William L. Decker?
- (979) 849-8516, as listed in official Medicare / NPI Registry data.
- What is William L. Decker's NPI number?
- 1568411056. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William L. Decker is enrolled with Medicare (CMS data updated 2026-10-02).
- 146 E Hospital Dr, Suite 210Angleton, TX 77515 (979) 849‑8516
- 7710 Beechnut St, Suite 100Houston, TX 77074 (713) 777‑7145
Group practices
Medicare enrollment lists William L. Decker as a member of this group (CMS data updated 2026-10-02).
- Tei and Associates LLC7 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568411056 |
| 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
- 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