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2026 NPPES data Medical Oncology Physician NPI 1922083336 M.D.
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Joseph Leach, M.D.

Medical Oncology Physician in Maple Grove, Minnesota.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,028 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
346
Medicare Part D claims · 78 beneficiaries · Medical Oncology Physician avg: 732
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
81.7/100
▼ 2 pts below national avg 83.5 · Above neutral
Industry payments
$32.5
1 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Joseph Leach, M.D. reported a CMS MIPS final score of 81.7/100 - below the 83.5 national average - and filed 346 Medicare Part D claims in 2024.

81.7/100
MIPS score · -2 vs avg
346
Part D claims, 2024
66%
generic prescribing
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.

Federal trust snapshot

What official records show about Joseph Leach, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1922083336), first enumerated 12/08/2005.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 346 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 81.7/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Reported

    Industry payment transparency

    $32.5 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • 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.

Compare Leach with other Medical Oncology Physician providers

Same primary specialty, same federal CMS NPPES roster.

Also enrolled in Minnesota

Other specialties in Maple Grove: Behavior Technician (190) · Physical Therapist (100) · Clinical Social Worker (61) · Physician Assistant (57)

CMS NPPES provider registry desk

NPI 1922083336 · Medical Oncology Physician

NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-INLINE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1922083336
  • ENUM-LEGACY 2005
  • TAX-NARROW 4,028
  • MIPS-INLINE 81.7/100
  • RX-LIGHT 346
  • BOOK-THIN 71 in Minnesota
  • PHOTO-FINISH Faith Young, MD · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Joseph Leach, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

82 ≥ 32nd percentile 32% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Joseph Leach, M.D. sits

This provider among medical oncology physician peers

Across the 1,398 medical oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Joseph Leach, M.D. writes more Part D claims than 42% of them and scores higher on MIPS quality than 34% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 10Joseph Leach, M.D., Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 34
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one medical oncology physician peer from a representative sample of 60; the gold marker is Joseph Leach, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Joseph Leach, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Joseph Leach, M.D.?

Near national average

NPI registry status

Active

Issued 12/08/2005

NPI 1922083336

Primary specialty

Medical Oncology Physician

Niche

4,028 US NPIs in this specialty

Medicare Part D claims

346 53% vs specialty avg

2024 prescription claims

Specialty avg: 732

MIPS final score

81.7/100 1.8 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Minnesota

How Medical Oncology Physician compares to other specialties among Minnesota providers

Minnesota providers
Behavior Technician12%Clinical Social Worker4.7%Physical Therapist4%Pharmacist3.7%Student in an Organized Heal…3.4%Mental Health Counselor3.1%Medical Oncology Physician0.1%
Largest specialties in Minnesota (% of in-state providers)

Medicare quality performance, MIPS

Joseph Leach, M.D.'s 2023 MIPS final score plotted against the Medical Oncology Physician national average

Near national average
MIPS Final Score
81.7/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%81.7%
MIPS final score (Medical Oncology Physician) - 81.7/100 vs national avg 83.5
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

14500 99TH AVE N STE 100
Maple Grove, MN 55369
(763) 898-1000

Provider Details

NPI 1922083336
Specialty Medical Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 12/08/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

81.7216
Final Score
Measured-score avg: 83.5
69.8683
Quality
59.7305
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Joseph Leach, M.D. 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.

Allina Health System
Minneapolis, MN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Joseph Leach, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$33

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

Joseph Leach, M.D. - brand share 34.0%
Medical Oncology Physician average

34% brand-name claims vs 66% generic, on 346 2024 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 2024.

346
Total Claims
$1.5M
Total Drug Cost
78
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
479.6
Total Day Supply
12,316
Brand vs Generic
34% brand / 66% generic
Brand Drug Cost
$1.5M
Generic Drug Cost
$4K
Opioid Claims
13 (3.8% rate)

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
2.13
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Joseph Leach, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Tagrisso
Osimertinib Mesylate
47
Prochlorperazine Maleate
 30
Tamoxifen Citrate
 18
Anastrozole
 17
Prednisone
 17
Ondansetron Hcl
 16
Letrozole
 15
Olanzapine
 13
Eliquis
Apixaban
12
Dexamethasone
 11

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

More Medical Oncology Physician in MN → All providers in Minnesota → Compare specialties →

Medical Oncology Physician Overview

How Joseph Leach, M.D. fits within the Medical Oncology Physician landscape nationally.

4,028
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
732
Avg Claims per Provider

Joseph Leach, M.D.'s 346 claims are below the specialty average of 732.

Nationwide Medical Oncology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Leach, both outside Minnesota so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (81.7 here).

Arjun Gupta 81.7 AZ Joseph Maakaron 81.7 GA Faith Young 81.7 NJ Alina Basnet 81.6 NY

Same NPPES enumeration year (2005)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Nada Sherman Oak Lawn, IL Duane Sigmund Cincinnati, OH William Black Salisbury, NC Kathleen Fielder Tualatin, OR

Nearby Medical Oncology Physician Providers in Minnesota

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

One of 71 Medical Oncology Physician providers enrolled in Minnesota, 11 are shown on this page.

Dr. Deepti Behl
M.D.
Rochester, MN
Dr. Keith Bible
M.D., PHD
Rochester, MN
Dr. Jan Buckner
M.D.
Rochester, MN
Dr. Jian Campian
MD
Rochester, MN
Dr. Kevin Cockerill
MD
Mankato, MN

Compare Medical Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Joseph Leach, M.D.'s specialty? ▼
Joseph Leach, M.D. specializes in Medical Oncology Physician and practices in Maple Grove, Minnesota. Credentials: M.D..
How much does Joseph Leach, M.D. prescribe under Medicare Part D? ▼
In 2024, Joseph Leach, M.D. wrote 346 Medicare Part D claims totaling $1.5M in drug costs for 78 beneficiaries.
What is Joseph Leach, M.D.'s Medicare quality score? ▼
Joseph Leach, M.D. has a CMS MIPS Final Score of 81.7/100 (Quality: 69.9, Cost: 59.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Joseph Leach, M.D. located? ▼
Joseph Leach, M.D. is located at 14500 99TH AVE N STE 100, Maple Grove, MN, 55369. Phone: (763) 898-1000.
What is Joseph Leach, M.D.'s NPI number? ▼
Joseph Leach, M.D.'s National Provider Identifier (NPI) is 1922083336, issued on 12/08/2005.
Does Joseph Leach, M.D. prescribe more brand-name or generic drugs? ▼
Joseph Leach, M.D.'s prescribing is 34% brand-name and 66% generic drugs by claim count, with $1.5M in brand drug costs.
Does Joseph Leach, M.D. prescribe opioids? ▼
Yes, Joseph Leach, M.D. had 13 opioid claims in 2024 with an opioid prescribing rate of 3.8%.
How many Medical Oncology Physician providers are there in the US? ▼
There are 4,028 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 732 Medicare Part D claims per year.
What drugs does Joseph Leach, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Joseph Leach, M.D.'s most frequently prescribed drugs include Tagrisso, Prochlorperazine Maleate, Tamoxifen Citrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Leach, M.D. accept Medicare? ▼
Joseph Leach, M.D. appears in CMS Medicare data with 346 Part D claims and 78 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Leach, M.D.'s credentials? ▼
Joseph Leach, M.D.'s NPI is 1922083336 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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

Compiled from official public sources by the editorial process.

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.