Larissa Ann Williams
Nurse Practitioner • Houston, TX
14406 Baron Creek Ln
Houston, TX 770444478
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Larissa Williams is listed in NPPES under Nurse Practitioner.
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NPI assigned on April 2, 2019; this date does not establish years in practice.
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Published CMS data list 98 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99310 — Subsequent nursing facility care with high level of medical decision making, per day: 50 service units.
- 99496 — Transitional care management services for problem of high complexity: 37 service units.
- 99306 — Initial nursing facility care with high level of medical decision making, per day: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Medicare Part B services went from 95 in 2019 to 98 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019–2021.
Practice Location & Contact Primary Location
14406 Baron Creek Ln
Houston, TX 770444478
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $16,470 in 2021
The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
Paid by Medicare
About $12,898 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
NPI first issued
2019
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Houston and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Larissa Williams are from 2021.
785 active clinicians are listed under Nurse Practitioner with a practice address in Houston, TX (4,835 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Houston
13.6% of these 785 clinicians have the CMS telehealth indicator.
43.7% of these 785 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services varied from year to year: 95 in 2019 and 98 in 2021.
- 2019: 95
- 2020: 30
- 2021: 98
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Medicare-allowed amount
Medicare-allowed amount increased 20% from $13,713 in 2019 to $16,470 in 2021.
- 2019: $13,713
- 2020: $3,874
- 2021: $16,470
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Paid by Medicare
Paid by Medicare varied from year to year: $11,845 in 2019 and $12,898 in 2021.
- 2019: $11,845
- 2020: $3,097
- 2021: $12,898
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2019–2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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50 | 49 | $277.90 | $117.43 |
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99496
Transitional care management services for problem of high complexity
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37 | 37 | $578.00 | $243.37 |
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99306
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
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11 | 11 | $342.09 | $144.89 |
Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LA2200X
NUCC Taxonomy Code: 363LC1500X
NUCC Taxonomy Code: 363LP2300X
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History
NPI enumerated April 02, 2019.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from April 2019 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Houston
- Regina Ottan
- Amanda Gujral, AGPCNP-BC
- Ahmad Tabbara, FNP-C
- Jasety Conaty, NP-C
- Godwin Nkwocha
- Erica Meeks, FNP-C
Mailing Address
14406 Baron Creek Ln
Houston, TX 770444478