2026 NPPES data Obstetrics & Gynecology Physician NPI 1841259959 M.D.
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LOUIS KERKHOFF, M.D.

Obstetrics & Gynecology Physician in OPELOUSAS, 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
168
Medicare Part D claims · 62 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

LOUIS KERKHOFF, M.D. filed 168 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in OPELOUSAS, Louisiana, prescribing 93% generic.

168
Part D claims, 2023
93%
generic prescribing

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.

LOUIS KERKHOFF, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

168 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)

LOUIS KERKHOFF, M.D. 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 LOUIS KERKHOFF, M.D.?

Quality data not reported

NPI registry status

Active

Issued 03/20/2006

NPI 1841259959

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

168 6% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Louisiana

How Obstetrics & Gynecology Physician compares to other specialties among Louisiana providers

Louisiana providers

Obstetrics & Gynecology Physician share within Louisiana

1. Obstetrics & Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Physician share within Louisiana

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

LOUIS KERKHOFF, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 1268 ATTAKAPAS DR, OPELOUSAS, LA, 70570, with a listed phone of (337) 948-1711. NPI 1841259959 was issued on 03/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KERKHOFF 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 168 prescription claims written by this provider, covering 62 Medicare beneficiaries and totaling roughly $5K in drug spend, split 7% brand-name and 93% generic by claim count. 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

1268 ATTAKAPAS DR
OPELOUSAS, LA 70570

Provider Details

NPI 1841259959
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Male
NPI Issued 03/20/2006

Brand vs generic prescribing mix · Generic-heavy

LOUIS KERKHOFF, M.D. — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 168 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

168
Total Claims
$5K
Total Drug Cost
62
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
311
Total Day Supply
8,440
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$2K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
0.65

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Estradiol
70
Terconazole
11

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

Obstetrics & Gynecology Physician Overview

How LOUIS KERKHOFF, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

LOUIS KERKHOFF, M.D.'s 168 claims are below the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Louisiana

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

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LOUIS KERKHOFF, M.D.'s specialty?
LOUIS KERKHOFF, M.D. specializes in Obstetrics & Gynecology Physician and practices in OPELOUSAS, Louisiana. Credentials: M.D..
How much does LOUIS KERKHOFF, M.D. prescribe under Medicare Part D?
In 2023, LOUIS KERKHOFF, M.D. wrote 168 Medicare Part D claims totaling $5K in drug costs for 62 beneficiaries.
Where is LOUIS KERKHOFF, M.D. located?
LOUIS KERKHOFF, M.D. is located at 1268 ATTAKAPAS DR, OPELOUSAS, LA, 70570. Phone: (337) 948-1711.
What is LOUIS KERKHOFF, M.D.'s NPI number?
LOUIS KERKHOFF, M.D.'s National Provider Identifier (NPI) is 1841259959, issued on 03/20/2006.
Does LOUIS KERKHOFF, M.D. prescribe more brand-name or generic drugs?
LOUIS KERKHOFF, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $2K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does LOUIS KERKHOFF, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LOUIS KERKHOFF, M.D.'s most frequently prescribed drugs include Estradiol, Terconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LOUIS KERKHOFF, M.D. accept Medicare?
LOUIS KERKHOFF, M.D. appears in CMS Medicare data with 168 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LOUIS KERKHOFF, M.D.'s credentials?
LOUIS KERKHOFF, M.D.'s NPI is 1841259959 with credentials M.D.. 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