Mariza Diane Oliver, NP
Family Nurse Practitioner · Brownsville, TX
Mariza Diane Oliver, NP is a family nurse practitioner with a practice address in Brownsville, Texas, and NPI 1477969848, issued on Jul 7, 2014. Check the license (Texas 648970, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariza Diane Oliver
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 648970 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2150 N Expressway # 83, Brownsville, TX 78521
- Phone
- (956) 548-0810
- Enumerated
- Jul 7, 2014
- Record last updated
- Jan 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (956) 544-7170
- Medicaid ID
- 339258101 TX
- Medicare enrollment
- Enrolled (PECOS I20140926001513); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 21,242 in Texas → Look up another NPI →
Also registered at 2150 N Expressway # 83
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahmed Wahby, RPHOncology Pharmacist1407073745
Verify Mariza Diane Oliver in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 648970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average family nurse practitioner in 2024
686 Medicare Part D claims for 266 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Levothyroxine Sodium95 claims
- Lidocaine-Prilocaine50 claims
- Hydroxyurea32 claims
- Anastrozole30 claims
- Sps29 claims
- Ondansetron Odt27 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 MIPS final score for 2023 (Medicare payment program): 89.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,129.38
66 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 99,489 providers of this specialty with any payment received $650.95 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
- Texas Oncology PABrownsville, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariza Diane Oliver among 21,242 family nurse practitioner records in Texas
Mariza Diane Oliver, NP is one of 21,242 family nurse practitioner records with a practice address in Texas. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 22% of them.
- NPI issued2014 · 22% of these records are older, 74% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2012 · median 2018 among the 11,286 with a school on file
- Record last updated2015 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
111 family nurse practitioner records list a practice address in Brownsville
They are 111 of the 1,671 NPPES records with a practice address in Brownsville, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in Brownsville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Elizabeth Betz, NPBrownsville, TX 785211942572771
- Martha Bollier, RN-FNPBrownsville, TX 785211659598605
- Leticia Cantu, FNPBrownsville, TX 785211851739700
- Maria Castillo, FNPBrownsville, TX 785211376805036
- Barbara HillBrownsville, TX 785211972589109
- Maria Jaramillo, FNPBrownsville, TX 785211285845321
- Karla Lopez, FNP-BCBrownsville, TX 785211275969446
- Erika Lucio, FNPBrownsville, TX 785211801143854
Common questions
What is Mariza Diane Oliver, NP's NPI number?
Mariza Diane Oliver, NP's National Provider Identifier (NPI) is 1477969848, issued on Jul 7, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Mariza Diane Oliver, NP located?
The NPPES record lists a practice address at 2150 N Expressway # 83, Brownsville, TX, 78521. Phone: (956) 548-0810. Providers update this record themselves, so call before visiting.
How can I verify Mariza Diane Oliver, NP's license?
NPPES lists Texas license number 648970, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mariza Diane Oliver, NP prescribe under Medicare Part D?
In 2024, Mariza Diane Oliver, NP had 686 Medicare Part D claims for 266 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Mariza Diane Oliver, NP's MIPS final score?
The 2023 MIPS final score is 89.4 of 100. 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.