NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1578568762 MD
Verify on CMS → Leah Dietrich, MD
Medical Oncology Physician 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 3,815 in Medical Oncology Physician, 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
616
Medicare Part D claims · 155 beneficiaries · Medical Oncology Physician avg: 689
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Leah Dietrich, MD filed 616 Medicare Part D claims in 2023 as a Medical Oncology Physician in La Crosse, Wisconsin.
- 616
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Leah Dietrich, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
616 Top 31% higher than 69% of 1,370,886 prescribers
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 certification likely (heuristic, not verified)
Leah Dietrich, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Leah Dietrich, MD?
Quality data not reportedPrimary specialty
Medical Oncology Physician
Medicare Part D claims
616 11% vs specialty avg
Specialty distribution in Wisconsin
How Medical Oncology Physician 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 Medical Oncology Physician. 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).
Leah Dietrich, MD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD credentials at 1836 SOUTH AVE, La Crosse, WI, 54601, with a listed phone of (608) 782-7300. NPI 1578568762 was issued on 06/15/2005.
Medicare Part D records for calendar year 2023 show 616 prescription claims written by this provider, covering 155 Medicare beneficiaries and totaling roughly $233K in drug spend.
Medical Oncology Physician is a narrow specialty nationwide, with 3,815 enrolled providers across 53 states and an average of 689 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
Provider Details
| NPI | 1578568762 |
|---|---|
| Specialty | Medical Oncology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/15/2005 |
Hospital and facility affiliations
Facilities where Leah Dietrich, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Gundersen Clinic Ltd
La Crosse, WI
Gundersen Lutheran Medical Center Inc
La Crosse, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
616
Total Claims
$233K
Total Drug Cost
155
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,434
- Total Day Supply
- 41,397
- Generic Drug Cost
- $20K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Leah Dietrich, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
330 claims
- Tamoxifen Citrate 28
Tamoxifen Citrate
28 claims
- Exemestane 26
Exemestane
26 claims
- Letrozole 25
Letrozole
25 claims
- Alendronate Sodium 24
Alendronate Sodium
24 claims
- Dexamethasone 18
Dexamethasone
18 claims
- Ondansetron Hcl 16
Ondansetron Hcl
16 claims
- Gabapentin 14
Gabapentin
14 claims
| Drug | Claims |
|---|---|
| Anastrozole | 330 |
| Tamoxifen Citrate | 28 |
| Exemestane | 26 |
| Letrozole | 25 |
| Alendronate Sodium | 24 |
| Dexamethasone | 18 |
| Ondansetron Hcl | 16 |
| Gabapentin | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Oncology Physician Overview
How Leah Dietrich, MD fits within the Medical Oncology Physician landscape nationally.
3,815
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider
Leah Dietrich, MD's 616 claims are below the specialty average of 689.
Nearby Medical Oncology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Dietrich.
Dr. Kamal Kant Singh Abbi
M.D.
Green Bay, WI
Syed Abutalib
Milwaukee, WI
Dr. Jacob Adashek
DO
Germantown, WI
Dr. Mark Albertini
MD
Madison, WI
Lynn Baatz
Manitowoc, WI
Compare Medical Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Explore Wisconsin
Frequently Asked Questions
What is Leah Dietrich, MD's specialty? ▼
Leah Dietrich, MD specializes in Medical Oncology Physician and practices in La Crosse, Wisconsin. Credentials: MD.
How much does Leah Dietrich, MD prescribe under Medicare Part D? ▼
In 2023, Leah Dietrich, MD wrote 616 Medicare Part D claims totaling $233K in drug costs for 155 beneficiaries.
Where is Leah Dietrich, MD located? ▼
Leah Dietrich, MD is located at 1836 SOUTH AVE, La Crosse, WI, 54601. Phone: (608) 782-7300.
What is Leah Dietrich, MD's NPI number? ▼
Leah Dietrich, MD's National Provider Identifier (NPI) is 1578568762, issued on 06/15/2005.
How many Medical Oncology Physician providers are there in the US? ▼
There are 3,815 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does Leah Dietrich, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Leah Dietrich, MD's most frequently prescribed drugs include Anastrozole, Tamoxifen Citrate, Exemestane. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leah Dietrich, MD accept Medicare? ▼
Leah Dietrich, MD appears in CMS Medicare data with 616 Part D claims and 155 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leah Dietrich, MD's credentials? ▼
Leah Dietrich, MD's NPI is 1578568762 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
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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.