DIANNA LANANH PHAN M.D.
NPI 1598055444
Family Medicine in Marrero, LA
About Dianna Lananh Phan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANNA LANANH PHAN M.D. (NPI 1598055444) is an individual family medicine provider in Marrero, Louisiana, licensed in Louisiana (MD.207087) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dianna Lananh Phan M.d. 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.
Medicare Billing Reassignment
Medicare enrollment records show Dianna Phan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Marrero, LA 70072
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
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, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70072 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Dianna Phan's NPI number?
The NPI number for Dianna Phan is 1598055444. It was assigned to this individual provider in the NPPES registry on April 12, 2011.
Where is Dianna Phan located?
Dianna Phan practices at 4225 Lapalco Blvd, Marrero, LA 70072. The listed phone number is (504) 371-9355.
What is Dianna Phan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Dianna Phan enrolled in Medicare?
Yes. Dianna Phan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Dianna Phan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dianna Phan reassigns Medicare benefits to Ochsner Clinic LLC (Marrero, 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 Dianna Phan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dianna Phan accept?
Health plans from Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan and HMO Louisiana list Dianna Phan 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.
Is Dianna Phan affiliated with any hospitals?
According to CMS data, Dianna Phan is affiliated with Ochsner Medical Center Acute.
When was this NPI record last updated?
The NPPES record for Dianna Phan was last updated on August 5, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dianna Lananh Phan, M.D. · NPI 1598055444
Family Medicine physician in Marrero, Louisiana. Individual provider, active in the CMS NPPES registry since April 12, 2011.
## Identity
- **NPI:** 1598055444 (Entity type: Individual)
- **Enumerated:** April 12, 2011
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD.207087 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 4225 LAPALCO BLVD, Marrero, LA 70072-4338
- **Phone:** (504) 371-9355
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Ochsner Clinic LLC (NPI 1336348382, Marrero, LA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** August 5, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1598055444) · Data from the CMS NPPES public registry.