Colville T. Williams
Internal Medicine · Nephrology (CMS) · Houston, TX
At a glance
915 Gessner Rd Ste 360, Houston, TX 77024-2540
NPPES record updated Oct 29, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
915 Gessner Rd Ste 360Houston, TX 77024-2540
Additional reported practice locations
13219 Dotson Rd Ste 200Houston, TX 770704308
Phone: 2815718090
Fax: 2815718095 1331 W Grand Pkwy N Ste 320
Katy, TX 774932711
Phone: 7134685440
Fax: 7139730778 10425 Huffmeister Rd Ste 420
Houston, TX 770653429
Phone: 2815718090
Fax: 2815718095
Education & affiliations
- Medical / professional school
- University Of Texas Medical School At Houston
- Graduation year
- 1995
- CMS specialties
- Internal Medicine · Nephrology
Practice groups
Reported hospital affiliations
- Hca Houston Healthcare Kingwood Kingwood, TX
- Houston Methodist Cypress Hospital Cypress, TX
- Houston Methodist Willowbrook Hospital Houston, TX
- St Luke's Hospital At The Vintage Houston, TX
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $45.00 |
Reporting companies
| Company | Amount |
|---|---|
| ANI PHARMACEUTICALS, INC. | $28.22 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $16.78 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Internal Medicine · Nephrology (CMS)
- Taxonomy code
- 207RN0300X
- Enumeration date
- Jul 12, 2005
- Record updated
- Oct 29, 2025
More registry details
- Provider type
- Individual · Type 1
Reported taxonomies and licenses
207RN0300X · Primary
License reported: J8419 TX
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
915 Gessner Rd Ste 360Houston, TX 77024-2540
- Phone
- (713) 468-5440
- Fax
- (713) 973-0778
Mailing address
915 GESSNER RD STE 360HOUSTON, TX 770242540
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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