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

Dr. John Vallian, MD

Individual provider Specialist · NPI 1023003159

Dr. John Vallian, MD is a Specialist in Opelousas, Louisiana. Practices as a sole proprietor. Licensed in Louisiana.

Licensed in
LA
In the registry since
2005
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

219 Depot St
Opelousas, LA 70570
Phone: (337) 543-1063
Fax: (337) 543-1073
Show map & directions

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

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 08449R (LA)

Record details

NPI number1023003159
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 14, 2005
Last updated in NPPESJuly 8, 2007
Mailing addressPo Box 360, Lawtell, LA 70550-0360

Other providers in Opelousas