John Vallian, MD
NPI 1023003159 · Specialist · Opelousas, LA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Vallian, MD is a Specialist provider in Opelousas, LA (NPI 1023003159).
Provider details
- NPI number
- 1023003159
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 08449R (LA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Vallian's NPI number?
- John Vallian's National Provider Identifier (NPI) is 1023003159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Vallian's specialty?
- John Vallian is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is John Vallian located?
- John Vallian's practice location on file with NPPES is 219 Depot Street, Opelousas, LA 70570.
- What is John Vallian's phone number?
- The practice phone number listed in the NPPES registry for John Vallian is (337) 543-1063.
- Does John Vallian accept Medicare?
- John Vallian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Vallian's NPI active?
- Yes — John Vallian's NPI (1023003159) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.