NPPES file of Aug 9, 2026

Heather Guillory Mercadel, FNP-C

Vascular Neurology Physician · Jefferson, LA

Heather Guillory Mercadel, FNP-C is a vascular neurology physician with a practice address in Jefferson, Louisiana, and NPI 1467281642, issued on Jul 29, 2024. Check the license (Louisiana 235189, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467281642
Name
Heather Guillory Mercadel
Credential
FNP-C
Primary taxonomy
Vascular Neurology Physician 2084V0102X
License number
235189 LA
Self-reported in NPPES; status is on the state search
Practice location
1514 Jefferson Hwy, Jefferson, LA 70121
Phone
(504) 842-3000
Enumerated
Jul 29, 2024
Record last updated
Jul 29, 2024
Medicare enrollment
Enrolled (PECOS I20241007001795); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1514 Jefferson Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Malik AbdeljaberStudent in an Organized Health Care Education/Training Program1568163335
  2. Nabil AhmedStudent in an Organized Health Care Education/Training Program1760310395
  3. Kali Albright, NPGerontology Nurse Practitioner1134924640
  4. Heather Alexander, PA-CPhysician Assistant1013422765
  5. Bader AlkharisiStudent in an Organized Health Care Education/Training Program1659859296
  6. Ashlyn Alongi, MDSurgery Physician1790245728

Verify Heather Guillory Mercadel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
    Search for license 235189
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Louisiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Ochsner Clinic LLCNew Orleans, LA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Heather Guillory Mercadel among 18 vascular neurology physician records in Louisiana

Heather Guillory Mercadel, FNP-C is one of 18 vascular neurology physician records with a practice address in Louisiana. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 94% of them.

  • NPI issued2024 · 94% of these records are older, 0% newer
  • In a Medicare fileYes · 100% of these records are
  • In the CMS Doctors and Clinicians fileYes · 89% of these records are
  • Graduated2023 · median 2011 among the 16 with a school on file
  • Record last updated2024 · 22% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084V0102X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular Neurology Physician providers in Louisiana

There are 18 vascular neurology physician records in Louisiana.

The 8 vascular neurology physician records with the nearest ZIP codes

  1. Kim LeeNew Orleans, LA 701211245763358
  2. Gabriel Vidal, M.D.New Orleans, LA 701211871788216
  3. Richard Zweifler, MDNew Orleans, LA 701211295774347
  4. Robert Trainor, M.D.New Orleans, LA 701241902245673
  5. Uday Shanker NadimpallyNew Orleans, LA 701151295262665
  6. Martha Robinson, M.D.New Orleans, LA 701121104232289
  7. Nimmi Wickramasuriya, M.D.New Orleans, LA 701121053052951
  8. Bryce Casteigne, MDThibodaux, LA 703011134681034

Common questions

What is Heather Guillory Mercadel, FNP-C's NPI number?

Heather Guillory Mercadel, FNP-C's National Provider Identifier (NPI) is 1467281642, issued on Jul 29, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Heather Guillory Mercadel, FNP-C located?

The NPPES record lists a practice address at 1514 Jefferson Hwy, Jefferson, LA, 70121. Phone: (504) 842-3000. Providers update this record themselves, so call before visiting.

How can I verify Heather Guillory Mercadel, FNP-C's license?

NPPES lists Louisiana license number 235189, 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.