Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Dennis Garrett Gruwell, MD

Individual provider Occupational Medicine Physician · NPI 1932247715

Dr. Dennis Garrett Gruwell, MD is an Occupational Medicine Physician in Hahnville, Louisiana. Practices as a sole proprietor. Licensed in Louisiana.

Licensed in
LA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

Dow Chemical Highway 3142 Gate 28- Health Services
Hahnville, LA 70057
Phone: (985) 783-4590
Show map & directions

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

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence 08024R (LA)

Record details

NPI number1932247715
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 2, 2007
Last updated in NPPESJuly 8, 2007