2026 NPPES data Surgery Physician NPI 1538314695 MD
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Leonard Armstrong, MD

Surgery Physician in Saint Paul, 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 36,191 in Surgery 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
410
Medicare Part D claims · 234 beneficiaries · Surgery Physician avg: 169
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83/100
▼ 0 pts below national avg 83.1 · Above neutral
Industry payments
$79.88
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Leonard Armstrong, MD reported a CMS MIPS final score of 83/100 - below the 83.1 national average - and filed 410 Medicare Part D claims in 2023.

83/100
MIPS score · 0 vs avg
410
Part D claims, 2023
91%
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.

Leonard Armstrong, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

83 39th percentile higher than 39% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

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

Where Leonard Armstrong, MD sits

This provider among surgery physician peers

Across the 7,525 surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Leonard Armstrong, MD writes more Part D claims than 92% of them and scores higher on MIPS quality than 41% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100023.146.269.392.4Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 7Leonard Armstrong, MD-Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 41
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one surgery physician peer from a representative sample of 60; the gold marker is Leonard Armstrong, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Leonard Armstrong, MD 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 Leonard Armstrong, MD?

Near national average

NPI registry status

Active

Issued 11/17/2008

NPI 1538314695

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

410 143% vs specialty avg

2023 prescription claims

Specialty avg: 169

MIPS final score

83/100 0.1 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Minnesota

How Surgery Physician compares to other specialties among Minnesota providers

Minnesota providers

Largest specialties in Minnesota (% of in-state providers)

Behavior Technician - 11.7%Behavior Technician11.7%Clinical Social Worker - 4.7%Clinical Social Worker4.7%Physical Therapist - 4.1%Physical Therapist4.1%Pharmacist - 3.7%Pharmacist3.7%Student in an Organized Health Care Education/Training Program - 3.4%Student in an Organized Health Care Education/Training Program3.4%Mental Health Counselor - 3.1%Mental Health Counselor3.1%Surgery Physician - 0.6%Surgery Physician0.6%
Largest specialties in Minnesota (% of in-state providers)

Medicare quality performance, MIPS

Leonard Armstrong, MD's 2023 MIPS final score plotted against the Surgery Physician national average

Near national average
MIPS Final Score
83/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery Physician) - 83/100 vs national avg 83.1

0%100%National avg83%83%
MIPS final score (Surgery Physician) - 83/100 vs national avg 83.1

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).

Leonard Armstrong, MD appears in the CMS NPPES registry as a Surgery Physician provider holding MD credentials at 401 PHALEN BLVD, Saint Paul, MN, 55130, with a listed phone of (651) 254-7980. NPI 1538314695 was issued on 11/17/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Armstrong 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 410 prescription claims written by this provider, covering 234 Medicare beneficiaries and totaling roughly $8K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 7.3%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83/100 for the 2023 performance year (Quality 87.1, Cost 57.1), compared with the national average of 83.1.

Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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

401 PHALEN BLVD
Saint Paul, MN 55130

Provider Details

NPI 1538314695
Specialty Surgery Physician
Credentials MD
Gender Male
NPI Issued 11/17/2008

CMS Quality Score (MIPS)

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

82.9973
Final Score
Avg: 83.1
87.0681
Quality
57.0897
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Leonard Armstrong, 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.

Group Health Plan Inc
Saint Paul, 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 Leonard Armstrong, MD. Source: openpaymentsdata.cms.gov.

Total received

$80

Largest payer

Medtronic, Inc.

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 · Generic-heavy

Leonard Armstrong, MD - brand share 9.0%
Surgery Physician average

9% brand-name claims vs 91% generic, on 410 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.

410
Total Claims
$8K
Total Drug Cost
234
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
416
Total Day Supply
1,900
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$833
Generic Drug Cost
$8K
Opioid Claims
30 (7.3% rate)
Antibiotic Claims
67

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
0.86
Gender Split
52% female / 48% male

Top Prescribed Drugs (Medicare Part D)

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

What Leonard Armstrong, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Metronidazole
35
Ondansetron Odt
Ondansetron
20
Neomycin Sulfate
16
Oxycodone Hcl
15
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
13
Tramadol Hcl
13
Erythromycin
Erythromycin Base
12
Loperamide
Loperamide Hcl
11
Gavilyte-C
"Peg3350/Sod Sulf
N/A
Gavilyte-G
"Peg3350/Sod Sulf
N/A

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

Surgery Physician Overview

How Leonard Armstrong, MD fits within the Surgery Physician landscape nationally.

36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider

Leonard Armstrong, MD's 410 claims are above the specialty average of 169.

Nearby Surgery Physician Providers in Minnesota

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

Compare Surgery 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Surgery 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.

Frequently Asked Questions

What is Leonard Armstrong, MD's specialty?
Leonard Armstrong, MD specializes in Surgery Physician and practices in Saint Paul, Minnesota. Credentials: MD.
How much does Leonard Armstrong, MD prescribe under Medicare Part D?
In 2023, Leonard Armstrong, MD wrote 410 Medicare Part D claims totaling $8K in drug costs for 234 beneficiaries.
What is Leonard Armstrong, MD's Medicare quality score?
Leonard Armstrong, MD has a CMS MIPS Final Score of 83/100 (Quality: 87.1, Cost: 57.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Leonard Armstrong, MD located?
Leonard Armstrong, MD is located at 401 PHALEN BLVD, Saint Paul, MN, 55130. Phone: (651) 254-7980.
What is Leonard Armstrong, MD's NPI number?
Leonard Armstrong, MD's National Provider Identifier (NPI) is 1538314695, issued on 11/17/2008.
Does Leonard Armstrong, MD prescribe more brand-name or generic drugs?
Leonard Armstrong, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $833 in brand drug costs.
Does Leonard Armstrong, MD prescribe opioids?
Yes, Leonard Armstrong, MD had 30 opioid claims in 2023 with an opioid prescribing rate of 7.3%.
How many Surgery Physician providers are there in the US?
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Leonard Armstrong, MD prescribe most often?
Based on 2023 Medicare Part D data, Leonard Armstrong, MD's most frequently prescribed drugs include Metronidazole, Ondansetron Odt, Neomycin Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leonard Armstrong, MD accept Medicare?
Leonard Armstrong, MD appears in CMS Medicare data with 410 Part D claims and 234 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leonard Armstrong, MD's credentials?
Leonard Armstrong, MD's NPI is 1538314695 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.
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 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.