Matthew Joseph Giefer, M.D.
Pediatric Gastroenterology Physician · New Orleans, LA
Matthew Joseph Giefer, M.D. is a pediatric gastroenterology physician with a practice address in New Orleans, Louisiana, and NPI 1144354945, issued on Mar 15, 2007. Check the license (Louisiana 321248, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Matthew Joseph Giefer
- Credential
- M.D.
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License numbers
- 321248 LA
MD60085838 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1514 Jefferson Hwy, New Orleans, LA 70121
- Phone
- (504) 842-3000
- Enumerated
- Mar 15, 2007
- Record last updated
- Dec 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (504) 842-5848
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 29 in Louisiana → Look up another NPI →
Also registered at 1514 Jefferson Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Joseph Giefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 321248Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $97.07
4 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 1,184 providers of this specialty with any payment received $2,585.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Matthew Joseph Giefer among 29 pediatric gastroenterology physician records in Louisiana
Matthew Joseph Giefer, M.D. is one of 29 pediatric gastroenterology physician records with a practice address in Louisiana. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 31% of them.
- NPI issued2007 · 31% of these records are older, 55% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 31% of these records are
- Record last updated2019 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in Louisiana
There are 29 pediatric gastroenterology physician records in Louisiana.
All 29 in Louisiana → Every provider in New Orleans → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Darnna Banks, MDNew Orleans, LA 701211437507266
- Ryan Himes, M.D.New Orleans, LA 701211861582157
- Jasmeet Mokha, M.D., M.P.H.New Orleans, LA 701211376869537
- Brian Morris, M.D.New Orleans, LA 701211669404232
- Erika Smith, M.D.New Orleans, LA 701211528202876
- Patricio Arias, MDNew Orleans, LA 701181366793374
- Michael Carver, M.D.New Orleans, LA 701181407387038
- Amanda Glinky, M.D.New Orleans, LA 701181053773903
Common questions
What is Matthew Joseph Giefer, M.D.'s NPI number?
Matthew Joseph Giefer, M.D.'s National Provider Identifier (NPI) is 1144354945, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Joseph Giefer, M.D. located?
The NPPES record lists a practice address at 1514 Jefferson Hwy, New Orleans, LA, 70121. Phone: (504) 842-3000. Providers update this record themselves, so call before visiting.
How can I verify Matthew Joseph Giefer, M.D.'s license?
NPPES lists Louisiana license number 321248, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.