Sharon Williams-Mattox, APRN, BC-FNP
Nurse Practitioner · Houston, TX
Sharon Williams-Mattox, APRN, BC-FNP is a nurse practitioner with a practice address in Houston, Texas, and NPI 1609944206, issued on Dec 1, 2006. Check the license (Texas 663493, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sharon Williams-Mattox
- Credential
- APRN, BC-FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 663493 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 792-6161
- Enumerated
- Dec 1, 2006
- Record last updated
- Oct 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid IDs
- 194718603 TX
194718604 TX - Medicare enrollment
- Enrolled (PECOS I20070626000179); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,825 in Texas → Look up another NPI →
Also registered at 1515 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sharon Williams-Mattox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 663493Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average nurse practitioner in 2024
431 Medicare Part D claims for 102 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims. 16 claims were for opioids.
Most prescribed
- Valacyclovir66 claims
- Levofloxacin31 claims
- Calquence26 claims
- Posaconazole22 claims
- Allopurinol18 claims
- Tramadol Hcl16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $320.69
9 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Physicians Referral ServiceHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sharon Williams-Mattox among 4,825 nurse practitioner records in Texas
Sharon Williams-Mattox, APRN, BC-FNP is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2006 · median 2018 among the 2,618 with a school on file
- Record last updated2018 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
784 nurse practitioner records list a practice address in Houston
They are 784 of the 61,221 NPPES records with a practice address in Houston, and 4,825 nurse practitioner records in Texas.
All 4,825 in Texas → Every provider in Houston → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
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- Janice Garza-Dennis, RN,ANP,AOCNPHouston, TX 770301659378016
- Carolyn Giveon, MS, RN, ANP, GNPHouston, TX 770301093719049
- Mary Halamicek, NPHouston, TX 770301609840339
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Common questions
What is Sharon Williams-Mattox, APRN, BC-FNP's NPI number?
Sharon Williams-Mattox, APRN, BC-FNP's National Provider Identifier (NPI) is 1609944206, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sharon Williams-Mattox, APRN, BC-FNP located?
The NPPES record lists a practice address at 1515 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 792-6161. Providers update this record themselves, so call before visiting.
How can I verify Sharon Williams-Mattox, APRN, BC-FNP's license?
NPPES lists Texas license number 663493, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Sharon Williams-Mattox, APRN, BC-FNP prescribe under Medicare Part D?
In 2024, Sharon Williams-Mattox, APRN, BC-FNP had 431 Medicare Part D claims for 102 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Sharon Williams-Mattox, APRN, BC-FNP's MIPS final score?
The 2023 MIPS final score is 81.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.