Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Cynthia L. Williams, MD

Works at hospitals in Houston, TX · Richmond, TX · Texas

Summary

Dr. Cynthia L. Williams, MD is an internal medicine doctor at 1701 Sunset Blvd, Houston, TX 77005. Phone: (713) 526-5511. Accepts Medicare assignment. In 2024, Cynthia L. Williams had 346 Original Medicare patients and 6,400 services. NPI 1013994508. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Cynthia L. Williams, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Cynthia L. Williams accept Medicare assignment?
Yes. Medicare's clinician data says Cynthia L. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Cynthia L. Williams see?
In 2024, CMS data shows 346 Original Medicare patients and 6,400 services for Cynthia L. Williams. This counts Original Medicare only and measures volume, not quality.
What is Cynthia L. Williams's NPI number?
1013994508. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Cynthia L. 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.

Original Medicare patients346
Services billed to Medicare6,400
Different services or procedures50
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Injection, denosumab, 1 mg (J0897)1,140 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)473 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)236 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)214 services
  5. Injection of drug or substance under skin or into muscle (96372)179 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 cholesterol69%
  • High blood pressure65%
  • Arthritis48%
  • Ischemic heart disease40%
  • Atrial fibrillation25%
  • Osteoporosis20%

Hospitals where Cynthia L. Williams works

Medicare's Facility Affiliation Data lists Cynthia L. 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.

Practice locations

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

Group practices

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

  • Norman B Frankel Et Al PTR Medical Clinic of Houston57 clinicians in the group

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Houston

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

All internal medicine doctors in Houston →

Other clinicians in Norman B Frankel Et Al PTR Medical Clinic of Houston

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

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At Houston
Graduation year2000 (26 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1013994508
CorrectionsReport 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

  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