Quick answers
- Which hospitals does Guy A. Williams work at?
- Medicare's official clinician data lists Guy A. Williams at 2 hospitals: Memorial Hermann Katy Hospital and Memorial Hermann Sugar Land Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Guy A. Williams see patients?
- Medicare's clinician data lists 4 practice locations, including Richmond, TX, Sugar Land, TX and Katy, TX. Call before your visit to confirm the address.
- What is Guy A. Williams's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Guy A. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Guy A. Williams 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 Guy A. Williams?
- (713) 559-6929, as listed in official Medicare / NPI Registry data.
- What is Guy A. Williams's NPI number?
- 1053978577. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Guy A. Williams works
Medicare's Facility Affiliation Data lists Guy A. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hermann Katy HospitalKaty, TX · Acute Care Hospital · CCN 450847
- Memorial Hermann Sugar Land HospitalSugar Land, TX · Acute Care Hospital · CCN 450848
Practice locations
Addresses where Guy A. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 1705 Jackson StRichmond, TX 77469 (713) 559‑6929
- 17500 W Grand Pkwy SSugar Land, TX 77479 (713) 559‑6929
- 23900 Katy FwyKaty, TX 77494 (713) 559‑6929
- 2525 W Bellfort St, Suite 120Houston, TX 77054 (713) 741‑6677
Group practices
Medicare enrollment lists Guy A. Williams as a member of this group (CMS data updated 2026-10-02).
- Brown and Associates Medical Laboratories LLP12 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Richmond
Clinicians with the same Medicare primary specialty in Richmond, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053978577 |
| 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