Marissa Diaz, PA
Physician Assistant · Raceland, LA
Marissa Diaz, PA is a physician assistant with a practice address in Raceland, Louisiana, and NPI 1518346394, issued on May 26, 2015. Check the license (Louisiana 200840, as entered in NPPES) with the Louisiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Diaz
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 200840 LA
Self-reported in NPPES; status is on the state search - Practice location
- 141 Twin Oaks Dr, Raceland, LA 70394
- Phone
- (985) 537-2666
- Enumerated
- May 26, 2015
- Record last updated
- Aug 6, 2026
- Fax
- (985) 537-1986
- Medicare enrollment
- Enrolled (PECOS I20150821013624); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,556 in Louisiana → Look up another NPI →
Also registered at 141 Twin Oaks Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Laura Blanchard, FNP-CFamily Nurse Practitioner1053752808
- Michael BlanchardPsychiatry Physician1710286604
- Adele Broussard, PA-CPhysician Assistant1972118842
- Anita Fazzio, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1215651476
- Juan Sarmiento, MDEndocrinology, Diabetes & Metabolism Physician1942652482
Verify Marissa Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license 200840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average physician assistant in 2024
78 Medicare Part D claims for 57 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 13 claims were for opioids.
Most prescribed
- Diclofenac Sodium33 claims
- Meloxicam16 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.
Industry payments in 2024: $69.16
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Lafourche Parish Hospital Service District NO 1Cut Off, LA
- Ochsner Clinic LLCRaceland, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Diaz among 1,556 physician assistant records in Louisiana
Marissa Diaz, PA is one of 1,556 physician assistant records with a practice address in Louisiana. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 34% of them.
- NPI issued2015 · 34% of these records are older, 61% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2018 among the 1,031 with a school on file
- Record last updated2026 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 physician assistant records list a practice address in Raceland
They are 4 of the 169 NPPES records with a practice address in Raceland, and 1,556 physician assistant records in Louisiana.
All 1,556 in Louisiana → Every provider in Raceland → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Adele Broussard, PA-CRaceland, LA 703941972118842
- Mary Rodrigue, PARaceland, LA 703941770917122
- Carsyn TouzetRaceland, LA 703941780470641
- Sylvia Papadopoulos, PAHammond, LA 704011699664292
- Victoria ArthurHammond, LA 704031891178935
- Taylor Bech, P.A.Hammond, LA 704031861762130
- Melinda Bonner, PA-CHammond, LA 704031295186302
- Andrew Bragagnini, PA-CHammond, LA 704031629672308
Common questions
What is Marissa Diaz, PA's NPI number?
Marissa Diaz, PA's National Provider Identifier (NPI) is 1518346394, issued on May 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Diaz, PA located?
The NPPES record lists a practice address at 141 Twin Oaks Dr, Raceland, LA, 70394. Phone: (985) 537-2666. Providers update this record themselves, so call before visiting.
How can I verify Marissa Diaz, PA's license?
NPPES lists Louisiana license number 200840, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Diaz, PA prescribe under Medicare Part D?
In 2024, Marissa Diaz, PA had 78 Medicare Part D claims for 57 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.