NPPES file of Aug 9, 2026

Gary V. Mertz, DC

Rehabilitation Chiropractor · Lake Charles, LA

Gary V. Mertz, DC is a rehabilitation chiropractor with a practice address in Lake Charles, Louisiana, and NPI 1396871232, issued on Feb 26, 2007. Check the license (Louisiana 1363, as entered in NPPES) with the Louisiana board that licenses this profession; 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
1396871232
Name
Gary V. Mertz
Credential
DC
Primary taxonomy
Rehabilitation Chiropractor 111NR0400X
License number
1363 LA
Self-reported in NPPES; status is on the state search
Practice location
2301 E Prien Lake RD, Lake Charles, LA 70601
Phone
(337) 478-6172
Enumerated
Feb 26, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(337) 474-4935
Medicare enrollment
Enrolled (PECOS I20250515001355); 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 2301 E Prien Lake RD

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

  1. Cheryl Anderson, LMTMassage Therapist1780286948
  2. Tracey Duhon, LMTMassage Therapist1679167084
  3. Logan Frelot, MASSAGE THERAPISTMassage Therapist1396606521
  4. Corey Guillory, MASSAGE THERAPISTMassage Therapist1568322972
  5. Frederick Hannie, D.C.Chiropractor1851733893
  6. Barrett Richter, DCChiropractor1497085054

Verify Gary V. Mertz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
    Search for license 1363
    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
Find 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. Fischer Family ChiropracticWilliston, ND

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

Gary V. Mertz among 13 rehabilitation chiropractor records in Louisiana

Gary V. Mertz, DC is one of 13 rehabilitation chiropractor records with a practice address in Louisiana. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 0% of them.

  • NPI issued2007 · 0% of these records are older, 46% newer
  • In a Medicare fileYes · 15% of these records are
  • In the CMS Doctors and Clinicians fileYes · 23% of these records are
  • Record last updated2007 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111NR0400X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rehabilitation Chiropractor providers in Louisiana

There are 13 rehabilitation chiropractor records in Louisiana.

The 8 rehabilitation chiropractor records with the nearest ZIP codes

  1. Richard McElveen, D.C.Lake Charles, LA 706071609093384
  2. Shawn Johnston, D.C.Carencro, LA 705201366618423
  3. Lawrence Gamble, DCMandeville, LA 704711073330676
  4. Robert Beck, MADCSlidell, LA 704611235272030
  5. Dennis Peyroux, D.C.Slidell, LA 704581831256676
  6. Keta Patel, D. C.Prairieville, LA 707691861635807
  7. Kelleigh Payne, D.C.Baton Rouge, LA 708161932530243
  8. Beverly Owusu-Duku, DCNew Orleans, LA 701271336603257

Common questions

What is Gary V. Mertz, DC's NPI number?

Gary V. Mertz, DC's National Provider Identifier (NPI) is 1396871232, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Gary V. Mertz, DC located?

The NPPES record lists a practice address at 2301 E Prien Lake RD, Lake Charles, LA, 70601. Phone: (337) 478-6172. Providers update this record themselves, so call before visiting.

How can I verify Gary V. Mertz, DC's license?

NPPES lists Louisiana license number 1363, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.

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.