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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

THOMAS H GRIMSTAD MD
NPI 1467453530
Internal Medicine - Pulmonary Disease in Marrero, LA

Active since August 10, 2005
1111 MEDICAL CENTER BLVD, NORTH 504, MARRERO, LA 70072(504) 349-6705(504) 347-0813 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Thomas H Grimstad Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS H GRIMSTAD MD (NPI 1467453530) is an individual pulmonary disease provider in Marrero, Louisiana, licensed in Louisiana (014059) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1467453530
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameTHOMAS H GRIMSTADCredential: MD
Location Address1111 MEDICAL CENTER BLVD, NORTH 504Marrero, LA 70072-3151
Mailing Address1111 Medical Center Blvd, North 504Marrero, LA 70072-3151 · (504) 349-6705 · Fax (504) 347-0813
Phone(504) 349-6705
Fax(504) 347-0813
Sole ProprietorNo
Enumeration DateAugust 10, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1467453530 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in LA · 014059
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
1111 MEDICAL CENTER BLVD, Marrero, LA 70072
Open in Google Maps ↗

Other Identifiers 1

Medicaid1172286LA

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.

LABADIE AND LABADIE A PROFESSIONAL LLC
Specialist
1111 MEDICAL CENTER BLVD, SUITE 250 SOUTH
MARRERO, LA 70072
Jefferson Parish (504) 349-6207
THELMA SONZA N.P.
Nurse Practitioner (Family)
1111 MEDICAL CENTER BLVD, SUITE 613N
MARRERO, LA 70072
Jefferson Parish (504) 394-6800
DR. JOSEPH GUARNIERI M.D.
Ophthalmology
1111 MEDICAL CENTER BLVD, SUITE N-213
MARRERO, LA 70072
Jefferson Parish (504) 349-6213
CHARLES JOSEPH BALLAY II M.D.
Otolaryngology
1111 MEDICAL CENTER BLVD, SUITE 707N
MARRERO, LA 70072
Jefferson Parish (504) 934-8550
DR. PRAMELA R GANJI MD
Family Medicine
1111 MEDICAL CENTER BLVD, STE 304 NORTH
MARRERO, LA 70072
Jefferson Parish (504) 349-6325
WEST JEFFERSON PHYSICIAN SERVICES
Internal Medicine
1111 MEDICAL CENTER BLVD, SUITE S850
MARRERO, LA 70072
Jefferson Parish (504) 349-6450
MS. MEGHAN CATHERINE MESSONNIER PA-C
Physician Assistant (Medical)
1111 MEDICAL CENTER BLVD, SUITE S-450
MARRERO, LA 70072
Jefferson Parish (504) 349-6423
KAELYNN LANDECHE FRANCISCO APRN
Nurse Practitioner
1111 MEDICAL CENTER BLVD
MARRERO, LA 70072
Jefferson Parish (504) 349-6945

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 Thomas Grimstad's NPI number?

The NPI number for Thomas Grimstad is 1467453530. It was assigned to this individual provider in the NPPES registry on August 10, 2005.

Where is Thomas Grimstad located?

Thomas Grimstad practices at 1111 Medical Center Blvd North 504, Marrero, LA 70072. The listed phone number is (504) 349-6705.

What is Thomas Grimstad's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

When was this NPI record last updated?

The NPPES record for Thomas Grimstad was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days 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.