MARISSA ISABEL HENNELLY MD
NPI 1336778356
Pediatrics in New Orleans, LA
About Marissa Isabel Hennelly Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA ISABEL HENNELLY MD (NPI 1336778356) is an individual pediatrics provider in New Orleans, Louisiana, licensed in Louisiana (336933) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marissa Isabel Hennelly Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marissa Hennelly reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Orleans, LA 70118
- Reassigned Medicare billing, Louisiana enrollment
- 297 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW ORLEANS, LA 70118
NEW ORLEANS, LA 70118
NEW ORLEANS, LA 70118
NEW ORLEANS, LA 70118
NEW ORLEANS, LA 70118
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Marissa Hennelly's NPI number?
The NPI number for Marissa Hennelly is 1336778356. It was assigned to this individual provider in the NPPES registry on April 2, 2020.
Where is Marissa Hennelly located?
Marissa Hennelly practices at 200 Henry Clay Ave, New Orleans, LA 70118. The listed phone number is (504) 899-9511.
What is Marissa Hennelly's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Marissa Hennelly enrolled in Medicare?
Yes. Marissa Hennelly is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marissa Hennelly's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Hennelly reassigns Medicare benefits to Childrens Hospital Medical Practice Corporation (New Orleans, LA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marissa Hennelly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marissa Hennelly accept?
Health plans from Molina Healthcare list Marissa Hennelly as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Marissa Hennelly was last updated on August 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Marissa Isabel Hennelly, MD · NPI 1336778356
Pediatrics physician in New Orleans, Louisiana. Individual provider, active in the CMS NPPES registry since April 2, 2020.
## Identity
- **NPI:** 1336778356 (Entity type: Individual)
- **Enumerated:** April 2, 2020
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 336933 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 HENRY CLAY AVE, New Orleans, LA 70118-5798
- **Phone:** (504) 899-9511
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Childrens Hospital Medical Practice Corporation (NPI 1821090713, New Orleans, LA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 15, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1336778356) · Data from the CMS NPPES public registry.