2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1194301010 MD
Verify on CMS →

NICHOLAS DUFF, MD

Student in an Organized Health Care Education/Training Program in GREENWOOD VILLAGE, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
259
Medicare Part D claims · 40 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

NICHOLAS DUFF, MD filed 259 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in GREENWOOD VILLAGE, Colorado, prescribing 87% generic.

259
Part D claims, 2023
87%
generic prescribing

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.

NICHOLAS DUFF, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

259 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

What does the federal data show about NICHOLAS DUFF, MD?

Quality data not reported

NPI registry status

Active

Issued 03/22/2021

NPI 1194301010

Primary specialty

Student in an Organized Health Care Education/Training Program

High-volume

331,761 US NPIs in this specialty

Medicare Part D claims

259 44% vs specialty avg

2023 prescription claims

Specialty avg: 459

Specialty distribution in Colorado

How Student in an Organized Health Care Education/Training Program compares to other specialties among Colorado providers

Colorado providers

Student in an Organized Health Care Education/Training Program share within Colorado

1. Student in an Organized Health Care Education/Training Program42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Student in an Organized Health Care Education/Training Program share within Colorado

Specialty board-certification context

Estimated specialty board-certified rate — Student in an Organized Health Care Education/Training Program (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Student in an Organized Health Care Education/Training Program ABMS/AOA estimate

Est. board-certified rate (Student in an Organized Health Care Education/Training Program) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Student in an Organized Health Care Education/Training Program) — ABMS / AOA estimate

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).

NICHOLAS DUFF, MD appears in the CMS NPPES registry as a Student in an Organized Health Care Education/Training Program provider holding MD credentials at 7100 E BELLEVIEW AVE STE G10, GREENWOOD VILLAGE, CO, 80111, with a listed phone of (303) 745-0000. NPI 1194301010 was issued on 03/22/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUFF 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 259 prescription claims written by this provider, covering 40 Medicare beneficiaries and totaling roughly $17K in drug spend, split 13% brand-name and 87% generic by claim count. 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.

Student in an Organized Health Care Education/Training Program is a high-volume specialty nationwide, with 331,761 enrolled providers across 55 states and an average of 459 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

7100 E BELLEVIEW AVE STE G10
GREENWOOD VILLAGE, CO 80111

Provider Details

NPI 1194301010
Specialty Student in an Organized Health Care Education/Training Program
Credentials MD
Gender Male
NPI Issued 03/22/2021

Hospital and facility affiliations

Facilities where NICHOLAS DUFF, 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.

CRITICAL CARE AND PULMONARY CONSULTANTS, P.C.
GREENWOOD VILLAGE, CO
KND DEVELOPMENT 59 LLC
AURORA, CO

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

Brand vs generic prescribing mix · Typical

NICHOLAS DUFF, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 259 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.

259
Total Claims
$17K
Total Drug Cost
40
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
320
Total Day Supply
9,050
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$13K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
2.01
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

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

What NICHOLAS DUFF, 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
Levothyroxine Sodium
21
Gabapentin
20
Lisinopril
16
Atorvastatin Calcium
15
Citalopram Hbr
Citalopram Hydrobromide
14
Tizanidine Hcl
14
Fluticasone Propionate
11
Januvia
Sitagliptin Phosphate
11
Metformin Hcl
11

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

Student in an Organized Health Care Education/Training Program Overview

How NICHOLAS DUFF, MD fits within the Student in an Organized Health Care Education/Training Program landscape nationally.

331,761
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider

NICHOLAS DUFF, MD's 259 claims are below the specialty average of 459.

Nearby Student in an Organized Health Care Education/Training Program Providers in Colorado

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

Compare Student in an Organized Health Care Education/Training Program nationally: see state-by-state distribution →

Frequently Asked Questions

What is NICHOLAS DUFF, MD's specialty?
NICHOLAS DUFF, MD specializes in Student in an Organized Health Care Education/Training Program and practices in GREENWOOD VILLAGE, Colorado. Credentials: MD.
How much does NICHOLAS DUFF, MD prescribe under Medicare Part D?
In 2023, NICHOLAS DUFF, MD wrote 259 Medicare Part D claims totaling $17K in drug costs for 40 beneficiaries.
Where is NICHOLAS DUFF, MD located?
NICHOLAS DUFF, MD is located at 7100 E BELLEVIEW AVE STE G10, GREENWOOD VILLAGE, CO, 80111. Phone: (303) 745-0000.
What is NICHOLAS DUFF, MD's NPI number?
NICHOLAS DUFF, MD's National Provider Identifier (NPI) is 1194301010, issued on 03/22/2021.
Does NICHOLAS DUFF, MD prescribe more brand-name or generic drugs?
NICHOLAS DUFF, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $13K in brand drug costs.
How many Student in an Organized Health Care Education/Training Program providers are there in the US?
There are 331,761 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does NICHOLAS DUFF, MD prescribe most often?
Based on 2023 Medicare Part D data, NICHOLAS DUFF, MD's most frequently prescribed drugs include Levothyroxine Sodium, Gabapentin, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NICHOLAS DUFF, MD accept Medicare?
NICHOLAS DUFF, MD appears in CMS Medicare data with 259 Part D claims and 40 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NICHOLAS DUFF, MD's credentials?
NICHOLAS DUFF, MD's NPI is 1194301010 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.
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