Matthew D McElveen, MD

Individual provider Hematology & Oncology Physician · NPI 1245395573

Matthew D McElveen, MD practises Hematology/Oncology in Slidell, Louisiana. Graduated from Louisiana State University School of Medicine in New Orleans in 2000, 26 years ago. Practices with Ochsner Clinic LLC, a 2,842-clinician group and accepts Medicare assignment. Licensed in Louisiana and Mississippi.

Years since qualifying: 26
Trained at: Louisiana State University School of Medicine in New Orleans
Licensed in: LA, MS
In the registry since: 2006
Specialties on file: 2

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.

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Practice location Address checks out

1120 Robert Blvd Ste 390
Slidell, LA 70458-2069
Phone: (985) 646-2411
Fax: (985) 646-2413

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary)	Taxonomy 207RH0003X · Licence 024947 (LA)
Hematology & Oncology Physician	Taxonomy 207RH0003X · Licence 20472 (MS)

Record details

NPI number	1245395573
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD
Sole proprietor	No
NPI enumerated	December 27, 2006
Last updated in NPPES	March 14, 2022
Certification date	March 14, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialty	HEMATOLOGY/ONCOLOGY
Also practises	MEDICAL ONCOLOGY
Medical school	LOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated	2000 (26 years in practice)
Group practice	Ochsner Clinic Llc — 2842 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Practice locations	5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients	388
Services billed	1,422 a service is one billed item, such as a visit, a test or a procedure
Average patient age	74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage	$636 31 payments · a meal or drink at a meeting or visit, not a fee
Education	$81 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Highland Community Hospital Hospital · Picayune, MS · listed as Highland Community Hospital Physicians
Ochsner Medical Center Acute Hospital · New Orleans, LA · listed as Ochsner Medical Center
Ochsner Medical Center-Hancock Hospital · Bay Saint Louis, MS · listed as Ochsner Medical Center - Hancock LLC
Slidell Memorial Hospital Hospital · Slidell, LA
St Bernard Parish Hospital Hospital · Chalmette, LA

Colleagues at Ochsner Clinic LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2842 clinicians in the practice; 12 are shown here.

Ilias N Caralopoulos, MD Student in an Organized Health Care Education/Training Program · Covington, LA
Ashleigh M Dewell, AUD Audiologist · Gretna, LA
Dr. Timothy C. Haman, MD Student in an Organized Health Care Education/Training Program · Lake Charles, LA
Matthew Mann, MD Family Medicine Physician · New Orleans, LA
Khelsea McCall, FNP-BC Family Nurse Practitioner · Lafayette, LA
Dr. Jeffanne Millien, MD Surgical Critical Care Physician · New Orleans, LA
Jeremiah Hunter Newsom, MD Student in an Organized Health Care Education/Training Program · New Orleans, LA
Dr. Godfrey Ross Parkerson II, MD Student in an Organized Health Care Education/Training Program · New Orleans, LA
Dr. Ryan Rhodes, MD Sports Medicine (Family Medicine) Physician · Hammond, LA
Dr. Arlen Brent Richard, MD Student in an Organized Health Care Education/Training Program · Washington, DC
Marian Vigo, MSRDNLDN Registered Dietitian · New Orleans, LA
Derek Joseph Vonderhaar, MD Emergency Medicine Physician · New Orleans, LA

Matthew D McElveen, MD

Practice location Address checks out

Specialties & licences

Record details

Medicare enrollment

Medicare patients and services, 2024

Payments from drug and device companies, 2025

Practises at

Colleagues at Ochsner Clinic LLC

Other providers in Slidell

Allen R. Calabresi, MD

Hematology & Oncology Specialists LLC

Ronald Dale Leblanc, MD

Northlake Hematology/Oncology Associates

Northshore Oncology Associates, LLC

Courtney Nicole Rasa, FNP-C

Sumathi Siva Smith, MD