Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARISSA DIAZ PA
NPI 1518346394
Physician Assistant in Raceland, LA

Q: What is Marissa Diaz's NPI number?

The NPI number for Marissa Diaz is 1518346394. It was assigned to this individual provider in the NPPES registry on May 26, 2015.

Q: What is Marissa Diaz's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Q: When was this NPI record last updated?

The NPPES record for Marissa Diaz was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 26, 2015PECOS EnrolledAccepts Medicare Assignment

141 TWIN OAKS DR, RACELAND, LA 70394(985) 537-2666(985) 537-1986 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Marissa Diaz Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARISSA DIAZ PA (NPI 1518346394) is an individual physician assistant in Raceland, Louisiana, licensed in Louisiana (200840) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1518346394

Entity TypeIndividualFemale

Primary Taxonomy363A00000X

Provider Legal NameMARISSA DIAZCredential: PA

Location Address141 TWIN OAKS DRRaceland, LA 70394-2761

Mailing Address141 Twin Oaks DrRaceland, LA 70394-2761 · (985) 537-2666 · Fax (985) 537-1986

Phone(985) 537-2666

Fax(985) 537-1986

Sole ProprietorYes

Medical School CMSOtherGraduated 2015

Enumeration DateMay 26, 2015

Last NPPES UpdateAugust 6, 2026

NPPES CertifiedAugust 6, 2026

✔ NPI 1518346394 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in LA · 200840

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

141 TWIN OAKS DR, Raceland, LA 70394

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, HMO Louisiana.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marissa Diaz Pa is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4587979380

PECOS Enrollment IDI20150821013624

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ochsner Medical Center Acute

Acute Care Hospitals · New Orleans, LA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190036

Location1516 Jefferson HwyNew Orleans, LA 70121 · Jefferson County

Emergency services Birthing friendly

Ochsner St Anne General Hospital

Critical Access Hospitals · Raceland, LA

OwnershipVoluntary non-profit - Other

CMS Certification Number191324

Location4608 Highway 1Raceland, LA 70394 · Lafourche County

Emergency services Birthing friendly

Lady Of The Sea General Hospital

Critical Access Hospitals · Cut Off, LA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number191325

Location200 West 134th PlaceCut Off, LA 70345 · Lafourche County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70394 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$83.60 typical visit price

range $53.43 – $164.73

Typical copayment $20.90 (range $13.35 – $41.18)

Most-billed visit code 99203

Established Patient

$67.06 typical visit price

range $16.64 – $133.62

Typical copayment $16.76 (range $4.16 – $33.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. LAURA CARR BLANCHARD FNP-C

Nurse Practitioner (Family)