2026 NPPES data Orthopaedic Surgery Physician NPI 1083831887 MD
Verify on CMS →

CLARK GUNDERSON, MD

Orthopaedic Surgery Physician in LAKE CHARLES, Louisiana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
100
Medicare Part D claims · 21 beneficiaries · Orthopaedic Surgery Physician avg: 324

What the federal data shows

CLARK GUNDERSON, MD filed 100 Medicare Part D claims in 2023 as a Orthopaedic Surgery Physician in LAKE CHARLES, Louisiana.

100
Part D claims, 2023

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

CLARK GUNDERSON, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

100 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

CLARK GUNDERSON, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CLARK GUNDERSON, MD?

Quality data not reported

NPI registry status

Active

Issued 04/20/2007

NPI 1083831887

Primary specialty

Orthopaedic Surgery Physician

Mid-sized

25,781 US NPIs in this specialty

Medicare Part D claims

100 69% vs specialty avg

2023 prescription claims

Specialty avg: 324

Specialty distribution in Louisiana

How Orthopaedic Surgery Physician compares to other specialties among Louisiana providers

Louisiana providers

Orthopaedic Surgery Physician share within Louisiana

1. Orthopaedic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Orthopaedic Surgery Physician share within Louisiana

Specialty board-certification context

Estimated specialty board-certified rate — Orthopaedic Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Orthopaedic Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Orthopaedic Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Orthopaedic Surgery Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CLARK GUNDERSON, MD appears in the CMS NPPES registry as a Orthopaedic Surgery Physician provider holding MD credentials at 1717 OAK PARK BLVD FL 3, LAKE CHARLES, LA, 70601, with a listed phone of (337) 439-0385. NPI 1083831887 was issued on 04/20/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUNDERSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 100 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $679 in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Orthopaedic Surgery Physician is a mid-sized specialty nationwide, with 25,781 enrolled providers across 56 states and an average of 324 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1717 OAK PARK BLVD FL 3
LAKE CHARLES, LA 70601

Provider Details

NPI 1083831887
Specialty Orthopaedic Surgery Physician
Credentials MD
Gender Male
NPI Issued 04/20/2007

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

100
Total Claims
$679
Total Drug Cost
21
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
186
Total Day Supply
5,373
Generic Drug Cost
$673

Patient Demographics

Average Patient Age
68.7 years
Avg HCC Risk Score
0.66

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Naproxen
30
Allopurinol
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Orthopaedic Surgery Physician Overview

How CLARK GUNDERSON, MD fits within the Orthopaedic Surgery Physician landscape nationally.

25,781
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
324
Avg Claims per Provider

CLARK GUNDERSON, MD's 100 claims are below the specialty average of 324.

Nearby Orthopaedic Surgery Physician Providers in Louisiana

Other clinicians with the same primary specialty enrolled in Louisiana, drawn from the same CMS NPPES roster as GUNDERSON.

Compare Orthopaedic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CLARK GUNDERSON, MD's specialty?
CLARK GUNDERSON, MD specializes in Orthopaedic Surgery Physician and practices in LAKE CHARLES, Louisiana. Credentials: MD.
How much does CLARK GUNDERSON, MD prescribe under Medicare Part D?
In 2023, CLARK GUNDERSON, MD wrote 100 Medicare Part D claims totaling $679 in drug costs for 21 beneficiaries.
Where is CLARK GUNDERSON, MD located?
CLARK GUNDERSON, MD is located at 1717 OAK PARK BLVD FL 3, LAKE CHARLES, LA, 70601. Phone: (337) 439-0385.
What is CLARK GUNDERSON, MD's NPI number?
CLARK GUNDERSON, MD's National Provider Identifier (NPI) is 1083831887, issued on 04/20/2007.
How many Orthopaedic Surgery Physician providers are there in the US?
There are 25,781 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 324 Medicare Part D claims per year.
What drugs does CLARK GUNDERSON, MD prescribe most often?
Based on 2023 Medicare Part D data, CLARK GUNDERSON, MD's most frequently prescribed drugs include Naproxen, Allopurinol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CLARK GUNDERSON, MD accept Medicare?
CLARK GUNDERSON, MD appears in CMS Medicare data with 100 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CLARK GUNDERSON, MD's credentials?
CLARK GUNDERSON, MD's NPI is 1083831887 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology