NPPES file of Aug 9, 2026

Clark A. Gunderson, MD

Orthopaedic Surgery Physician · Lake Charles, LA

Clark A. Gunderson, MD is an orthopaedic surgery physician with a practice address in Lake Charles, Louisiana, and NPI 1083831887, issued on Apr 20, 2007. Check the license (Louisiana 012489, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083831887
Name
Clark A. Gunderson
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
012489 LA
12489 LA
Self-reported in NPPES; status is on the state search
Practice location
1717 Oak Park Blvd FL 3, Lake Charles, LA 70601
Phone
(337) 439-0385
Enumerated
Apr 20, 2007
Record last updated
Feb 20, 2023
Fax
(337) 433-5448
Medicaid IDs
1141305 LA
3073307 LA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1717 Oak Park Blvd FL 3

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

  1. Aimee Allen, APRNNurse Practitioner1093003402
  2. Cynthia Arabie, CFNPFamily Nurse Practitioner1477513653
  3. Collin BoweInternal Medicine Physician1760896625
  4. Cynthia Cox, FNPFamily Nurse Practitioner1831189174
  5. Robert Duarte, M.D.Adult Reconstructive Orthopaedic Surgery Physician1992983159
  6. Hailey Esparza, RDRegistered Dietitian1043621089

Verify Clark A. Gunderson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
    Search for license 012489
    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
Open 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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87% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

45 Medicare Part D claims, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Clark Gunderson45
  2. Specialty average346

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Clark A. Gunderson among 336 orthopaedic surgery physician records in Louisiana

Clark A. Gunderson, MD is one of 336 orthopaedic surgery physician records with a practice address in Louisiana. 77% 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 61% of them.

  • NPI issued2007 · 61% of these records are older, 26% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2023 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Louisiana

There are 336 orthopaedic surgery physician records in Louisiana.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Nathan Cohen, M.D.Lake Charles, LA 706011285686774
  2. Barry Henry, M.D.Lake Charles, LA 706011780681734
  3. Kim Poludnianyk, D.O.Lake Charles, LA 706011609072792
  4. Dennis Walker, M.D.Lake Charles, LA 706011154371821
  5. Robert Bernauer, M.D.Lake Charles, LA 706051235211095
  6. David Drez, M.D.Lake Charles, LA 706051912957044
  7. Stephen Flood, M.D.Lake Charles, LA 706051427130186
  8. Jonathan Foret, M.D.Lake Charles, LA 706051538365994

Common questions

What is Clark A. Gunderson, MD's NPI number?

Clark A. Gunderson, MD's National Provider Identifier (NPI) is 1083831887, issued on Apr 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Clark A. Gunderson, MD located?

The NPPES record lists a practice address at 1717 Oak Park Blvd FL 3, Lake Charles, LA, 70601. Phone: (337) 439-0385. Providers update this record themselves, so call before visiting.

How can I verify Clark A. Gunderson, MD's license?

NPPES lists Louisiana license number 012489, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Clark A. Gunderson, MD prescribe under Medicare Part D?

In 2024, Clark A. Gunderson, MD had 45 Medicare Part D claims; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions 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.