Medicare Enrolled

Dr. Mechelle Williams, ACNP

Acute Care Nurse Practitioner · Katy, TX
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
24275 KATY FWY STE 400, Katy, TX 77494
3463877171
In practice since 2007 (18 years)
NPI: 1598986150 verify on NPPES ↗
High
DATA COVERAGE
Data in 3 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Williams from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Williams

Dr. Mechelle Williams is an acute care nurse practitioner in Katy, TX, with 18 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 1,446 Medicare services across 602 unique beneficiaries.

The Data Coverage level for Dr. Williams is High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 18 years in practice ▲ Top 4% volume in TX

Medicare Practice Summary

Medicare Utilization ↗
1,446
Medicare services
Top 4% in TX for acute care nurse practitioner
602
Unique beneficiaries
$84
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~80 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Home visit, established patient, high complexity
A home visit for an established patient involving high-level medical decision making, lasting at least 60 minutes.
 610 $121 $365
Chronic care management, first 20 min/month
This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions.
 184 $41 $125
Home visit, established patient, moderate complexity
A home visit for an established patient involving moderate medical decision making. The visit requires at least 40 minutes of time if time is used to determine the level of service.
 172 $79 $260
Home visit, established patient, low complexity
A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes.
 87 $50 $156
Chronic care management, first 30 minutes
This service covers the initial 30 minutes of care coordination for patients with two or more chronic conditions. It is provided personally by a healthcare professional each calendar month.
 73 $57 $170
Chronic care management, additional 20 min/month
This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month.
 63 $32 $105
Home visit, established patient, straightforward decision making
A home visit for an established patient involving straightforward medical decision making. The visit lasts at least 15 minutes when time is used to determine the level of service.
 46 $27 $95
Prolonged preventive service, first 30 minutes
This code covers the first 30 minutes of direct patient contact time spent on preventive services that exceeds the typical duration of the primary procedure. It is billed in addition to the code for the primary preventive service.
 38 $54 $135
Annual wellness visit, follow-up
A follow-up annual wellness visit that includes a personalized prevention plan of service.
 32 $111 $265
Chronic care management services
Comprehensive assessment and care planning for patients requiring ongoing chronic care management.
 31 $39 $130
Chronic care management, additional 30 minutes
This service covers an extra 30 minutes of care management provided by a healthcare professional for patients with two or more chronic conditions. It is billed per calendar month in addition to the standard chronic care management time.
 30 $41 $125
Home visit, new patient, high complexity
A home visit for a new patient involving high-level medical decision making, lasting at least 75 minutes.
 28 $124 $435
Complex chronic care management, first 60 minutes
This service involves clinical staff time directed by a healthcare professional to manage two or more chronic conditions over a calendar month. It covers the first 60 minutes of this coordinated care effort.
 21 $91 $260
Advance care planning consultation, first 30 min
A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion.
 16 $57 $170
Prolonged preventive service time, each additional 30 minutes
This code covers additional time spent on direct patient contact for preventive services beyond the typical duration of the primary procedure. It is billed separately in 30-minute increments.
 15 $54 $135
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
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Geographic Context

Acute care nurse practitioners within 10 mi
664
Per 100K population
77.2
County median income
$113,409
Nearest hospital
MEMORIAL HERMANN KATY HOSPITAL
0.0 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments — No payments N/A
Disciplinary History — Not public N/A

This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Williams is a clinical cardiology specialist, with above-average Medicare volume (top 4% in TX), with 18 years of NPI registration.

This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →

Frequently Asked Questions

Is Dr. Williams experienced with home visit, established patient, high complexity?
Based on Medicare claims data, Dr. Williams performed 610 home visit, established patient, high complexity services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
How do Dr. Williams's costs compare to other acute care nurse practitioners in Katy?
Dr. Williams's average Medicare payment per service is $84. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently High for Dr. Williams) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →