Colville T. Williams, MD

Medicare activity in 2024

Official CMS public-use data for Colville T. Williams, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)280 services
2. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)185 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)78 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)57 services
5. Hemodialysis procedure with physician evaluation (90935)19 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Chronic kidney disease75%
• Diabetes66%
• Ischemic heart disease65%
• Heart failure64%

Hospitals where Colville T. Williams works

Medicare's Facility Affiliation Data lists Colville T. Williams at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• HCA Houston Healthcare KingwoodKingwood, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · CCN 450775
• Houston Methodist Cypress HospitalCypress, TX · Acute Care Hospital · CCN 670342
• Houston Methodist Willowbrook HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450844
• St. Luke's Hospital at The VintageHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 670075

Practice locations

Addresses where Colville T. Williams is enrolled with Medicare (CMS data updated October 2, 2026).

• 10425 Huffmeister RdHouston, TX 77065
• 915 Gessner Rd, Suite 360Houston, TX 77024

Group practices

Medicare enrollment lists Colville T. Williams as a member of this group (CMS data updated October 2, 2026).

• Houston Nephrology Group, P.A.9 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in Texas →

Other nephrologists in Houston

Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.

• Syed S. Rahman, MD
• Alexandra Grand, MD
• Dia R. Waguespack, MD
• Alak Ray, MD
• Farhad R. Danesh, MD
• Kevin W. Finkel, MD
• Michael F. Campbell, MD
• Rajesh Shenava, MD

All nephrologists in Houston →

Other clinicians in Houston Nephrology Group, P.A.

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Monica Guidry, NP
• Esther L. Lifafe
• Masood Mahmood, MD
• Redentor Roy
• Ariel M. Velasco, MD
• Vijaya P. Sreenarasimhaiah, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians