Leslie Leanne Armstrong

  • Greeley, CO
  • Emergency medicine physician
NPI1578730958
Medicare services, 2024
475
Medicare patients, 2024
325
Part D claims, 2024
167
Publications
2
MIPS score, 2024
93
Practice address
6767 29th St, Greeley, CO 80634
Practice phone
Call (970) 652-2000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCHealth Greeley Hospital

Hospital · Greeley, Colorado

See all 7 affiliations

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Leslie Leanne Armstrong is an emergency medicine physician in Greeley, Colorado

Leslie Armstrong practices at UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth.

Leslie Armstrong's NPI, 1578730958, was assigned on May 14, 2008. Leslie Armstrong graduated from University of Colorado School of Medicine, Denver in 2007. Leslie Armstrong holds Colorado license 49936.

NPI and contact details
NPI enumeration date
May 14, 2008
NPI status
Active
Practice phone
(970) 652-2000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
45
Medical school graduation
2007

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Leslie Leanne Armstrong practices at UCHealth Greeley Hospital in Greeley, Colorado

Leslie Armstrong's primary practice is UCHealth Greeley Hospital, at 6767 29th St, Greeley, CO 80634 in Weld County. The practice phone is (970) 652-2000.

Source: Dmand AI Affiliation Data

Leslie Leanne Armstrong is affiliated with 3 sites of care and 4 medical groups

Leslie Armstrong's primary practice is UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth. Leslie Armstrong is also affiliated with CommonSpirit - Longmont United Hospital. The medical group on file is Emergency Physicians of the Rockies. Dmand AI also links Leslie Armstrong to 3 more medical groups and 1 breast imaging center, each named with a free account.

See all 7 affiliations for Leslie Armstrong

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Leslie Leanne Armstrong's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Leslie Armstrong practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCHealth Greeley HospitalAvailable with a free account
+2 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Leslie Leanne Armstrong is one of 1,226 emergency medicine physicians in Colorado

Emergency medicine is Leslie Armstrong's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Leslie Armstrong is licensed in Colorado.

Specialties and state licenses

  • Emergency medicine, ColoradoPrimaryLicense TL-2407 · taxonomy 207P00000X

Emergency medicine physicians near Leslie Armstrong

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Leslie Leanne Armstrong billed Medicare for 475 services in 2024

CMS data shows 475 Medicare services from Leslie Armstrong across 4 procedure codes in 2024, for 325 Medicare patients. Medicare paid $43,337 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024475
Medicare patients325
Paid by Medicare$43,337
Procedure codes4

Leslie Armstrong's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2932024: 3199%
Tests and treatments
2023: 1362024: 15615%

Leslie Armstrong compared with the Colorado median for emergency medicine physicians, 2024

  • Leslie Armstrong
  • Colorado median
Medicare services
475vs 1992.4 times
Medicare patients
325vs 19368% above
Part D claims
77vs 342.3 times

Medians across 1,237 emergency medicine physicians in Colorado with Dmand AI profiles that report each measure.

Leslie Armstrong's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Leslie Armstrong

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Leslie Leanne Armstrong treated 325 Medicare patients in 2024, average age 74

CMS counts 325 Medicare patients who saw Leslie Armstrong in 2024. The largest group is 65 to 74, with 117 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.89, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Leslie Armstrong's median patient age at 42, with 59% women.

Medicare patients, 2024325
Average age74
Average risk score1.89
Also on Medicaid21%

Leslie Armstrong's Medicare patients by age, 2024

Leslie Armstrong's Medicare patients by sex, 2024

  • Women17153%
  • Men15447%

Chronic conditions among Leslie Armstrong's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol73%
  3. Arthritis56%
  4. Ischemic heart disease41%
  5. Mood disorders41%
  6. Depression38%
  7. Chronic kidney disease34%
  8. Anxiety31%

Share of Medicare patients with each condition. A patient can have several.

Leslie Armstrong's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 42

Patient panel by sex, all payers

  • Women59%
  • Men41%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Leslie Leanne Armstrong wrote 167 Medicare Part D claims in 2024

In 2024, Leslie Armstrong wrote 167 Medicare Part D claims for 129 patients. 94% of them were for generic drugs. CMS names the drug for 77 of them, across 3 drugs with 11 or more claims each, at $740 in total drug cost. In 2023, CMS named 71 claims across 4 drugs.

Part D claims, 2024167
Drugs named by CMS3
Total drug cost$740
Part D patients129

Leslie Armstrong's Part D claims by kind of drug, 2024

  • Generic157 claims94%
  • Brand-name and other10 claims6%

Leslie Armstrong's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Leslie Armstrong's Part D claims, 2024

  • Opioids13%21 of 167 claims
  • Antibiotics45%75 of 167 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 712024: 778%

Drugs named by CMS: 3 in 2024, 4 in 2023.

See all prescribing by Leslie Armstrong

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Leslie Leanne Armstrong scored 93 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Leslie Armstrong for performance year 2024, reported as part of a group.

Leslie Armstrong's MIPS scores, performance year 2024

  • 93of 100Final score
  • 87.3of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Leslie Leanne Armstrong has 2 publications on record

Dmand AI links 2 papers to Leslie Armstrong. Leslie Armstrong has published most often in Ann Emerg Med. Leslie Armstrong's most frequent co-authors are Courtenay Holscher, MD and Samantha Kelley Mauck, MD.

Papers2

Leslie Armstrong's most frequent co-authors

Recent publications by Leslie Armstrong

See all 2 publications and co-authors

See who Leslie Armstrong researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Leslie Armstrong works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Leslie Leanne Armstrong graduated from University of Colorado School of Medicine, Denver

Leslie Armstrong graduated from University of Colorado School of Medicine, Denver in 2007.

  1. Medical schoolUniversity of Colorado School of Medicine, Denver

Source: Dmand AI Professional Profile Data

Sources for Leslie Leanne Armstrong's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesClinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Leslie Leanne Armstrong

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Leslie Leanne Armstrong's NPI number?

Leslie Leanne Armstrong's NPI number is 1578730958. It was assigned on May 14, 2008, and it is active in the NPI Registry.

What does Leslie Leanne Armstrong specialize in?

Leslie Leanne Armstrong is an emergency medicine physician in Greeley, Colorado. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Leslie Leanne Armstrong practice?

Leslie Armstrong practices at 6767 29th St, Greeley, CO 80634. Leslie Armstrong's primary practice is UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth. Dmand AI also links Leslie Armstrong to 3 medical groups and 1 breast imaging center.

What is Leslie Leanne Armstrong's office phone number?

The practice phone on file for Leslie Armstrong is (970) 652-2000.

What is Leslie Leanne Armstrong's medical license number?

Leslie Armstrong holds Colorado license 49936.

Which hospitals is Leslie Leanne Armstrong affiliated with?

Leslie Armstrong practices at UCHealth Greeley Hospital in Greeley, Colorado. Leslie Armstrong is also affiliated with CommonSpirit - Longmont United Hospital.

What medical group is Leslie Leanne Armstrong part of?

Leslie Armstrong is linked to Emergency Physicians of the Rockies. Dmand AI links Leslie Armstrong to 3 more medical groups.

Does Leslie Leanne Armstrong accept Medicare?

Yes. CMS data shows Leslie Armstrong billed Medicare for 475 services in 2024.

What is Leslie Leanne Armstrong's MIPS score?

Leslie Armstrong's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.

How many Medicare patients does Leslie Leanne Armstrong see?

CMS counts 325 Medicare patients who saw Leslie Armstrong in 2024, with an average age of 74.

Show 6 more questionsShow fewer questions

What services does Leslie Leanne Armstrong bill to Medicare?

In 2024, Leslie Armstrong's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).

Where did Leslie Leanne Armstrong go to medical school?

Leslie Armstrong graduated from University of Colorado School of Medicine, Denver in 2007.

What drugs does Leslie Leanne Armstrong prescribe most?

In 2024 Medicare Part D data, Leslie Armstrong's most prescribed drugs by claims were Cefuroxime, Ondansetron ODT and Hydrocodone-Acetaminophen.

How long has Leslie Leanne Armstrong been practicing?

Leslie Armstrong graduated from medical school in 2007, 19 years ago.

Does Leslie Leanne Armstrong do research?

Dmand AI links 2 publications to Leslie Armstrong.

Who does Leslie Leanne Armstrong publish with?

Leslie Armstrong's most frequent co-authors are Courtenay Holscher, MD (1 shared paper) and Samantha Kelley Mauck, MD (1 shared paper).

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