DEREK JOSEPH VONDERHAAR M.D.
NPI 1245471218
Emergency Medicine in New Orleans, LA
About Derek Joseph Vonderhaar M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK JOSEPH VONDERHAAR M.D. (NPI 1245471218) is an individual emergency medicine provider in New Orleans, Louisiana, licensed in Louisiana (204086) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2009).
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 and accepts Medicare assignment
Derek Joseph Vonderhaar 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 Reassignments
4Medicare enrollment records show Derek Vonderhaar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Orleans, LA 70124
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
New Orleans, LA 70112
- Reassigned Medicare billing, Louisiana enrollment
- 98 clinicians in this Medicare group
New Orleans, LA 70112
- Reassigned Medicare billing, Louisiana enrollment
- 931 clinicians in this Medicare group
Covington, LA 70433
- Reassigned Medicare billing, Louisiana enrollment
- 159 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 11
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 4
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, LASlidell Memorial Hospital
Acute Care Hospitals · Slidell, LAOchsner Medical Center-Kenner
Acute Care Hospitals · Kenner, LALallie Kemp Medical Center
Critical Access Hospitals · Independence, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70124 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
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Derek Vonderhaar's NPI number?
The NPI number for Derek Vonderhaar is 1245471218. It was assigned to this individual provider in the NPPES registry on March 20, 2009.
Where is Derek Vonderhaar located?
Derek Vonderhaar practices at 6959 Catina St, New Orleans, LA 70124. The listed phone number is (504) 430-8532.
What is Derek Vonderhaar's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Derek Vonderhaar enrolled in Medicare?
Yes. Derek Vonderhaar 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 organizations bill Medicare for Derek Vonderhaar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Vonderhaar reassigns Medicare benefits to 4 organizations: Ochsner Clinic LLC (New Orleans, LA), Louisiana State University School Of Medicine In New Orleans Faculty (New Orleans, LA), Louisiana State University School Of Medicine In New Orleans Faculty G (New Orleans, LA) and Van Meter Emergency Physicians Inc. Apmc (Covington, LA). Each 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 Derek Vonderhaar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Derek Vonderhaar accept?
Health plans from Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan and HMO Louisiana list Derek Vonderhaar 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 Derek Vonderhaar affiliated with any hospitals?
According to CMS data, Derek Vonderhaar is affiliated with Ochsner Medical Center Acute, Slidell Memorial Hospital, Ochsner Medical Center-Kenner and Lallie Kemp Medical Center.
When was this NPI record last updated?
The NPPES record for Derek Vonderhaar was last updated on July 17, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.