NPI registry status
Active
2026 NPPES data Oral and Maxillofacial Surgery (Dentist) NPI 1639158660 D.D.S.
Verify on CMS → Martin Koop, D.D.S.
Oral and Maxillofacial Surgery (Dentist) in La Crosse, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,769 in Oral and Maxillofacial Surgery (Dentist), and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
57
Medicare Part D claims · 38 beneficiaries · Oral and Maxillofacial Surgery (Dentist) avg: 407
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Martin Koop, D.D.S. filed 57 Medicare Part D claims in 2024 as an Oral and Maxillofacial Surgery (Dentist) in La Crosse, Wisconsin.
- 57
- Part D claims, 2024
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Martin Koop, D.D.S.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639158660), first enumerated 01/10/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 57 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639158660 · Oral and Maxillofacial Surgery (Dentist)
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1639158660
- ENUM-LEGACY 2006
- TAX-MID 8K Oral and
- RX-TRACE 57
- BOOK-THIN 141 in Wisconsin
- PHOTO-ENUM Paul Akers · 2006
Martin Koop, D.D.S.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
57 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Martin Koop, D.D.S.?
Quality data not reportedPrimary specialty
Oral and Maxillofacial Surgery (Dentist)
Medicare Part D claims
57 86% vs specialty avg
Specialty distribution in Wisconsin
How Oral and Maxillofacial Surgery (Dentist) compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Oral and Maxillofacial Surgery (Dentist). Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1639158660 |
|---|---|
| Specialty | Oral and Maxillofacial Surgery (Dentist) |
| Credentials | D.D.S. |
| Gender | Male |
| NPI Issued | 01/10/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
57
Total Claims
$192
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 57
- Total Day Supply
- 327
- Brand Drug Cost
- $0
- Generic Drug Cost
- $192
- Opioid Claims
- 13 (22.8% rate)
- Antibiotic Claims
- 36
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amoxicillin | 29 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral and Maxillofacial Surgery (Dentist) in WI →
All providers in Wisconsin →
Compare specialties →
Oral and Maxillofacial Surgery (Dentist) Overview
How Martin Koop, D.D.S. fits within the Oral and Maxillofacial Surgery (Dentist) landscape nationally.
7,769
Oral and Maxillofacial Surgery (Dentist) Providers in US
52
States with Oral and Maxillofacial Surgery (Dentist)
407
Avg Claims per Provider
Martin Koop, D.D.S.'s 57 claims are below the specialty average of 407.
Nationwide Oral and Maxillofacial Surgery (Dentist) peers with similar MIPS or enrollment year
Two federal-record peer sets for Koop, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Oral and Maxillofacial Surgery (Dentist) Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Koop.
One of 141 Oral and Maxillofacial Surgery (Dentist) providers enrolled in Wisconsin, 5 are shown here.
Dr. Troy Alton
DDS
Madison, WI
Dr. Henry Ambrookian
D.D.S.
West Bend, WI
Dr. David Anderson
DDS, MD
Appleton, WI
Dr. Steven Anderson
DDS
Baraboo, WI
Dr. Theodore Anderson
DMD
Sheboygan, WI
Compare Oral and Maxillofacial Surgery (Dentist) nationally: see state-by-state distribution →
Frequently Asked Questions
What is Martin Koop, D.D.S.'s specialty? ▼
Martin Koop, D.D.S. specializes in Oral and Maxillofacial Surgery (Dentist) and practices in La Crosse, Wisconsin. Credentials: D.D.S..
How much does Martin Koop, D.D.S. prescribe under Medicare Part D? ▼
In 2024, Martin Koop, D.D.S. wrote 57 Medicare Part D claims totaling $192 in drug costs for 38 beneficiaries.
Where is Martin Koop, D.D.S. located? ▼
Martin Koop, D.D.S. is located at 1836 SOUTH AVE, La Crosse, WI, 54601. Phone: (608) 782-7300.
What is Martin Koop, D.D.S.'s NPI number? ▼
Martin Koop, D.D.S.'s National Provider Identifier (NPI) is 1639158660, issued on 01/10/2006.
Does Martin Koop, D.D.S. prescribe opioids? ▼
Yes, Martin Koop, D.D.S. had 13 opioid claims in 2024 with an opioid prescribing rate of 22.8%.
How many Oral and Maxillofacial Surgery (Dentist) providers are there in the US? ▼
There are 7,769 Oral and Maxillofacial Surgery (Dentist) providers across 52 states in the US. The average Oral and Maxillofacial Surgery (Dentist) provider writes 407 Medicare Part D claims per year.
What drugs does Martin Koop, D.D.S. prescribe most often? ▼
Based on 2024 Medicare Part D data, Martin Koop, D.D.S.'s most frequently prescribed drugs include Amoxicillin, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Martin Koop, D.D.S. accept Medicare? ▼
Martin Koop, D.D.S. appears in CMS Medicare data with 57 Part D claims and 38 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Martin Koop, D.D.S.'s credentials? ▼
Martin Koop, D.D.S.'s NPI is 1639158660 with credentials D.D.S.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.