2026 NPPES data Dermatology Physician NPI 1669817128 M.D.
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Cuong Nguyen, M.D.

Dermatology Physician in Chicago, Illinois.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 14,645 in Dermatology 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
565
Medicare Part D claims · 153 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1/100
▲ 11 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Cuong Nguyen, M.D. reported a CMS MIPS final score of 94.1/100 - above the 83.1 national average - and filed 565 Medicare Part D claims in 2023.

94.1/100
MIPS score · +11 vs avg
565
Part D claims, 2023
87%
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.

Cuong Nguyen, M.D.'s MIPS score vs every scored U.S. clinician

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

94 Top 25% higher than 75% 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%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. 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 Cuong Nguyen, M.D. sits

This provider among dermatology physician peers

Across the 6,594 dermatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Cuong Nguyen, M.D. writes more Part D claims than 40% of them and scores higher on MIPS quality than 68% - placing this provider in the lower-volume, high-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 quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 40Cuong Nguyen, M.D.-Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68
Part D claim volume vs MIPS quality, by specialty percentile

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

Board certification likely (heuristic, not verified)

Cuong Nguyen, 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 Cuong Nguyen, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/09/2013

NPI 1669817128

Primary specialty

Dermatology Physician

Mid-sized

14,645 US NPIs in this specialty

Medicare Part D claims

565 22% vs specialty avg

2023 prescription claims

Specialty avg: 729

MIPS final score

94.1/100 11 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Illinois

How Dermatology Physician compares to other specialties among Illinois providers

Illinois providers
Clinical Social Worker - 5.2%Clinical Social Worker5.2%Physical Therapist - 5%Physical Therapist5%Mental Health Counselor - 4.5%Mental Health Counselor4.5%Speech-Language Pathologist - 4.2%Speech-Language Pathologist4.2%Student in an Organized Health Care Education/Training Program - 4.2%Student in an Organized Health Care Education/Training Program4.2%Pharmacist - 4.1%Pharmacist4.1%Dermatology Physician - 0.2%Dermatology Physician0.2%
Largest specialties in Illinois (% of in-state providers)

Medicare quality performance, MIPS

Cuong Nguyen, M.D.'s 2023 MIPS final score plotted against the Dermatology Physician national average

High performer (top quartile)
MIPS Final Score
94.1/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Dermatology Physician) - 94.1/100 vs national avg 83.1

0%100%National avg83%94.1%
MIPS final score (Dermatology Physician) - 94.1/100 vs national avg 83.1
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).

Cuong Nguyen, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 676 N SAINT CLAIR ST STE 1600, Chicago, IL, 60611, with a listed phone of (312) 695-1418. NPI 1669817128 was issued on 05/09/2013.

Medicare Part D records for calendar year 2023 show 565 prescription claims written by this provider, covering 153 Medicare beneficiaries and totaling roughly $419K in drug spend, split 13% brand-name and 87% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1/100 for the 2023 performance year (Quality 82.6), compared with the national average of 83.1.

Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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

676 N SAINT CLAIR ST STE 1600
Chicago, IL 60611

Provider Details

NPI 1669817128
Specialty Dermatology Physician
Credentials M.D.
Gender Male
NPI Issued 05/09/2013

CMS Quality Score (MIPS)

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

94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Cuong Nguyen, 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.

Northwestern Medical Faculty Foundation
Chicago, IL

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

License & disciplinary context - Illinois IDFPR 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Cuong Nguyen, M.D.. To verify Cuong Nguyen, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

Cuong Nguyen, M.D. - brand share 13.0%
Dermatology Physician average

13% brand-name claims vs 87% generic, on 565 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.

565
Total Claims
$419K
Total Drug Cost
153
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
760
Total Day Supply
20,368
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$386K
Generic Drug Cost
$33K
Antibiotic Claims
48

Patient Demographics

Average Patient Age
71.2 years
Avg HCC Risk Score
2.27
Gender Split
66% female / 34% male
Age Distribution
<65: 26, 65-74: 61, 75-84: 52, 85+: 14

Top Prescribed Drugs (Medicare Part D)

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

What Cuong Nguyen, M.D. 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
Triamcinolone Acetonide
67
Ketoconazole
60
Clobetasol Propionate
43
Gabapentin
24
Doxycycline Hyclate
23
Metronidazole
18
Tacrolimus
16
Dupixent Pen
Dupilumab
14
Methotrexate
Methotrexate Sodium
14
Clindamycin Phosphate
13

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

Dermatology Physician Overview

How Cuong Nguyen, M.D. fits within the Dermatology Physician landscape nationally.

14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

Cuong Nguyen, M.D.'s 565 claims are below the specialty average of 729.

Nearby Dermatology Physician Providers in Illinois

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

Compare Dermatology 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 Illinois medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Dermatology 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 Cuong Nguyen, M.D.'s specialty?
Cuong Nguyen, M.D. specializes in Dermatology Physician and practices in Chicago, Illinois. Credentials: M.D..
How much does Cuong Nguyen, M.D. prescribe under Medicare Part D?
In 2023, Cuong Nguyen, M.D. wrote 565 Medicare Part D claims totaling $419K in drug costs for 153 beneficiaries.
What is Cuong Nguyen, M.D.'s Medicare quality score?
Cuong Nguyen, M.D. has a CMS MIPS Final Score of 94.1/100 (Quality: 82.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Cuong Nguyen, M.D. located?
Cuong Nguyen, M.D. is located at 676 N SAINT CLAIR ST STE 1600, Chicago, IL, 60611. Phone: (312) 695-1418.
What is Cuong Nguyen, M.D.'s NPI number?
Cuong Nguyen, M.D.'s National Provider Identifier (NPI) is 1669817128, issued on 05/09/2013.
Does Cuong Nguyen, M.D. prescribe more brand-name or generic drugs?
Cuong Nguyen, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $386K in brand drug costs.
How many Dermatology Physician providers are there in the US?
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Cuong Nguyen, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Cuong Nguyen, M.D.'s most frequently prescribed drugs include Triamcinolone Acetonide, Ketoconazole, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cuong Nguyen, M.D. accept Medicare?
Cuong Nguyen, M.D. appears in CMS Medicare data with 565 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cuong Nguyen, M.D.'s credentials?
Cuong Nguyen, M.D.'s NPI is 1669817128 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 (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.

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 May 2026.