Dr. Darren Eugene Nisly, DO

  • Grand Junction, CO
  • General surgeon
NPI1811375223PAC ID5991017642
Medicare services, 2024
55
Medicare patients, 2024
98
Part D claims, 2024
82
Publications
1
MIPS score, 2024
95
Practice address
2635 N 7th St, Grand Junction, CO 81501
Practice phone
Call (970) 298-2260
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

St. Mary's Regional Hospital

Hospital · Grand Junction, Colorado

See all 11 affiliations

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Dr. Darren Eugene Nisly is a general surgeon in Grand Junction, Colorado

Dr. Nisly practices at St. Mary's Regional Hospital in Grand Junction, Colorado, part of Intermountain Health.

Dr. Nisly's NPI, 1811375223, was assigned on May 18, 2015. Dr. Nisly graduated from Rocky Vista University College of Osteopathic Med in 2015. Dr. Nisly holds Colorado license DR.0064180.

NPI and contact details
Medicare PAC ID
5991017642
NPI enumeration date
May 18, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(970) 298-2260
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Darren Eugene Nisly practices at St. Mary's Regional Hospital in Grand Junction, Colorado

Dr. Nisly's primary practice is St. Mary's Regional Hospital, at 2635 N 7th St, Grand Junction, CO 81501 in Mesa County. The practice phone is (970) 298-2260.

Source: Dmand AI Affiliation Data

Dr. Darren Eugene Nisly is affiliated with 7 sites of care and 4 medical groups

Dr. Nisly's primary practice is St. Mary's Regional Hospital in Grand Junction, Colorado, part of Intermountain Health. Dr. Nisly is also affiliated with Valley View Hospital. The medical group on file is Colorado Surgical Affiliates. Dmand AI also links Dr. Nisly to 3 more hospitals, 3 medical groups, 1 group practice or clinic and 1 rural health clinic, each named with a free account.

See all 11 affiliations for Dr. Nisly

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

Dmand AI tracks the EHR system at Dr. Darren Eugene Nisly's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nisly practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
St. Mary's Regional HospitalAvailable with a free account
+6 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Nisly practices

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Dr. Darren Eugene Nisly is one of 504 general surgeons in Colorado

Surgery is Dr. Nisly's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nisly is licensed in Colorado.

Specialties and state licenses

  • Surgery, ColoradoPrimaryLicense DR.0064180 · taxonomy 208600000X

General surgeons near Dr. Nisly

Counts of general surgeons 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

Dr. Darren Eugene Nisly billed Medicare for 55 services in 2024

CMS data shows 55 Medicare services from Dr. Nisly across 3 procedure codes in 2024, all of them office visits, for 98 Medicare patients. Medicare paid $4,604 for them. Every service was in an office.

Medicare services, 202455
Medicare patients98
Paid by Medicare$4,604
Procedure codes3

Dr. Nisly's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 452024: 5522%

Dr. Nisly compared with the Colorado median for general surgeons, 2024

  • Dr. Nisly
  • Colorado median
Medicare services
55vs 10950% below
Medicare patients
98vs 1046% below
Part D claims
14vs 3155% below

Medians across 491 general surgeons in Colorado with Dmand AI profiles that report each measure.

Dr. Nisly'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 Dr. Nisly

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

Dr. Darren Eugene Nisly treated 98 Medicare patients in 2024, average age 73

CMS counts 98 Medicare patients who saw Dr. Nisly in 2024. The largest group is 65 to 74, with 53 patients. 71% of them have high blood pressure, and 64% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.18, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Nisly's median patient age at 72, with 54% women.

Medicare patients, 202498
Average age73
Average risk score1.18
Also on Medicaid13%

Dr. Nisly's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Nisly's Medicare patients by sex, 2024

  • Women4243%
  • Men5657%

Chronic conditions among Dr. Nisly's Medicare patients, 2024

  1. High blood pressure71%
  2. High cholesterol64%
  3. Arthritis47%
  4. Diabetes26%
  5. Ischemic heart disease26%
  6. Atrial fibrillation23%
  7. COPD23%
  8. Chronic kidney disease22%

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

Dr. Nisly's patients across all payers

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

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women54%
  • Men45%

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

Dr. Darren Eugene Nisly wrote 82 Medicare Part D claims in 2024

In 2024, Dr. Nisly wrote 82 Medicare Part D claims for 48 patients. 93% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $44 in total drug cost. In 2023, CMS named 53 claims across 2 drugs.

Part D claims, 202482
Drugs named by CMS1
Total drug cost$44
Part D patients48

Dr. Nisly's Part D claims by kind of drug, 2024

  • Generic76 claims93%
  • Brand-name and other6 claims7%

Dr. Nisly'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 Dr. Nisly's Part D claims, 2024

  • Opioids26%21 of 82 claims
  • Antibiotics21%17 of 82 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: 532024: 1474%

Drugs named by CMS: 1 in 2024, 2 in 2023.

See all prescribing by Dr. Nisly

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

Dr. Darren Eugene Nisly scored 95 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Nisly for performance year 2024, reported through an alternative payment model (APM). Dr. Nisly accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 14 procedures of hernia repair (minimally invasive) by Dr. Nisly, more than 80% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. Nisly's MIPS scores, performance year 2024

  • 95of 100Final score
  • 86.9of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

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

Where Dr. Nisly ranks in Medicare procedure volume

Colonoscopy
46th percentile17 procedures
Hernia repair (minimally invasive)
80th percentile14 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

For MedTech and pharma teams

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Dr. Darren Eugene Nisly has 1 publication on record

Dmand AI links 1 paper to Dr. Nisly in 2018.

Papers1

Recent publications by Dr. Nisly

See all 1 publications and co-authors

See who Dr. Nisly researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nisly works with, so you can find a warm path to the right general surgeons.

How network discovery works

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

Dr. Darren Eugene Nisly received $15,453 in industry payments from 2020 to 2022

CMS Open Payments shows 38 general payments to Dr. Nisly from 7 drug and device companies from 2020 to 2022. Education make up the largest share, 84% of the total. Intuitive Surgical, Inc. paid the most, $14,757.

General payments to Dr. Nisly by program year, 2020 to 2022

General payments to Dr. Nisly by kind, 2020 to 2022

$15.5Kin total
  • Education$13,00084%
  • Travel and lodging$1,3569%
  • Food and beverage$1,0977%

Companies that paid Dr. Nisly the most, 2020 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Nisly

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Darren Eugene Nisly graduated from Rocky Vista University College of Osteopathic Med

Dr. Nisly graduated from Rocky Vista University College of Osteopathic Med in 2015.

  1. Medical schoolRocky Vista University College of Osteopathic Med

Source: Dmand AI Professional Profile Data

Sources for Dr. Darren Eugene Nisly'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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
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 Dr. Darren Eugene Nisly

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

What is Dr. Darren Eugene Nisly's NPI number?

Dr. Darren Eugene Nisly's NPI number is 1811375223. It was assigned on May 18, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Darren Eugene Nisly?

Dr. Darren Eugene Nisly is a general surgeon in Grand Junction, Colorado. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. Darren Eugene Nisly practice?

Dr. Nisly practices at 2635 N 7th St, Grand Junction, CO 81501. Dr. Nisly's primary practice is St. Mary's Regional Hospital in Grand Junction, Colorado, part of Intermountain Health. Dmand AI also links Dr. Nisly to 3 hospitals, 3 medical groups, 1 group practice or clinic and 1 rural health clinic.

What is Dr. Darren Eugene Nisly's office phone number?

The practice phone on file for Dr. Nisly is (970) 298-2260.

What is Dr. Darren Eugene Nisly's medical license number?

Dr. Nisly holds Colorado license DR.0064180.

Which hospitals is Dr. Darren Eugene Nisly affiliated with?

Dr. Nisly practices at St. Mary's Regional Hospital in Grand Junction, Colorado. Dr. Nisly is also affiliated with Valley View Hospital. Dmand AI links Dr. Nisly to 3 more hospitals.

What medical group is Dr. Darren Eugene Nisly part of?

Dr. Nisly is linked to Colorado Surgical Affiliates. Dmand AI links Dr. Nisly to 3 more medical groups.

Does Dr. Darren Eugene Nisly accept Medicare?

Yes. CMS data shows Dr. Nisly billed Medicare for 55 services in 2024, and Dr. Nisly accepts Medicare assignment.

What is Dr. Darren Eugene Nisly's MIPS score?

Dr. Nisly's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).

How many Medicare patients does Dr. Darren Eugene Nisly see?

CMS counts 98 Medicare patients who saw Dr. Nisly in 2024, with an average age of 73.

Show 6 more questionsShow fewer questions

What services does Dr. Darren Eugene Nisly bill to Medicare?

In 2024, Dr. Nisly's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and office visit, established patient (99213).

Where did Dr. Darren Eugene Nisly go to medical school?

Dr. Nisly graduated from Rocky Vista University College of Osteopathic Med in 2015.

What drugs does Dr. Darren Eugene Nisly prescribe most?

In 2024 Medicare Part D data, Dr. Nisly's most prescribed drugs by claims were Oxycodone HCl.

Has Dr. Darren Eugene Nisly received payments from drug or device companies?

CMS Open Payments shows $15,453 in general payments to Dr. Nisly from 7 companies from 2020 to 2022. The largest total came from Intuitive Surgical, Inc.

How long has Dr. Darren Eugene Nisly been practicing?

Dr. Nisly graduated from medical school in 2015, 11 years ago.

Does Dr. Darren Eugene Nisly do research?

Dmand AI links 1 publication to Dr. Nisly.

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