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2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1841227402 MD
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Phuong Nguyen, MD

Physical Medicine & Rehabilitation Physician in Saint Louis, Missouri.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 15,336 in Physical Medicine & Rehabilitation 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
404
Medicare Part D claims · 90 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
MIPS score
71.6/100
▼ 12 pts below national avg 83.5 · Mid-tier
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Compiled from official public sources by the editorial process.

What the federal data shows

Phuong Nguyen, MD reported a CMS MIPS final score of 71.6/100 - below the 83.5 national average - and filed 404 Medicare Part D claims in 2023.

71.6/100
MIPS score · -12 vs avg
404
Part D claims, 2023
Likely
board-certified (heuristic)
≥9th
pct among measured MIPS (lower-bound band)

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.

Federal trust snapshot

What official records show about Phuong Nguyen, MD

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1841227402), first enumerated 06/27/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 404 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 71.6/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1841227402 · Physical Medicine & Rehabilitation Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1841227402
  • ENUM-LEGACY 2006
  • TAX-MID 15K Physical Medicine
  • MIPS-LOW 71.6/100
  • RX-LIGHT 404
  • BOOK-THIN 267 in Missouri
  • PHOTO-FINISH Paula Benes · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Phuong Nguyen, MD's MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

72 ≥ 9th percentile 9% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

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

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

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

Where Phuong Nguyen, MD sits

This provider among physical medicine & rehabilitation physician peers

Across the 2,483 physical medicine & rehabilitation physician providers who report both Medicare Part D prescribing and a MIPS quality score, Phuong Nguyen, MD writes more Part D claims than 55% of them and scores higher on MIPS quality than 18% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100023.647.370.994.5Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 28Phuong Nguyen, MD, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 18
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one physical medicine & rehabilitation physician peer from a representative sample of 60; the gold marker is Phuong Nguyen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Phuong Nguyen, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Phuong Nguyen, MD?

Below national average

NPI registry status

Active

Issued 06/27/2006

NPI 1841227402

Primary specialty

Physical Medicine & Rehabilitation Physician

Mid-sized

15,336 US NPIs in this specialty

Medicare Part D claims

404 48% vs specialty avg

2023 prescription claims

Specialty avg: 781

MIPS final score

71.6/100 11.9 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in Missouri

How Physical Medicine & Rehabilitation Physician compares to other specialties among Missouri providers

Missouri providers
Pharmacist4.8%Professional Counselor4.8%Speech-Language Pathologist4.5%Clinical Social Worker4.5%Family Nurse Practitioner4.3%Physical Therapist4%Physical Medicine & Rehabili…0.2%
Largest specialties in Missouri (% of in-state providers)

Medicare quality performance, MIPS

Phuong Nguyen, MD's 2023 MIPS final score plotted against the Physical Medicine & Rehabilitation Physician national average

Below national average
MIPS Final Score
71.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%71.6%
MIPS final score (Physical Medicine & Rehabilitation Physician) - 71.6/100 vs national avg 83.5
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).

Practice Address

6420 CLAYTON RD
Saint Louis, MO 63117
(314) 768-8205

Provider Details

NPI 1841227402
Specialty Physical Medicine & Rehabilitation Physician
Credentials MD
Gender Male
NPI Issued 06/27/2006

CMS Quality Score (MIPS)

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

71.5626
Final Score
Measured-score avg: 83.5
58.2277
Quality
44.2385
Cost

Reporting: Group practice

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

404
Total Claims
$22K
Total Drug Cost
90
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
417
Total Day Supply
11,142
Generic Drug Cost
$5K
Opioid Claims
13 (3.2% rate)

Patient Demographics

Average Patient Age
76.4 years
Avg HCC Risk Score
2.34
Gender Split
58% female / 42% male

Top Prescribed Drugs (Medicare Part D)

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

What Phuong Nguyen, 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
Atorvastatin Calcium
 41
Amlodipine Besylate
 28
Clopidogrel
Clopidogrel Bisulfate
21
Pantoprazole Sodium
 20
Metoprolol Tartrate
 13
Hydralazine Hcl
 12
Levetiracetam
 12

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

More Physical Medicine & Rehabilitation Physician in MO → All providers in Missouri → Compare specialties →

Physical Medicine & Rehabilitation Physician Overview

How Phuong Nguyen, MD fits within the Physical Medicine & Rehabilitation Physician landscape nationally.

15,336
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider

Phuong Nguyen, MD's 404 claims are below the specialty average of 781.

Nationwide Physical Medicine & Rehabilitation Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Nguyen, both outside Missouri so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (71.6 here).

Paula Benes 71.6 IL Keathern Malone 71.7 GA Kevin Moss 71.7 OH Ehab Kodsi 71.7 NY

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Andrew Sherman Miami, FL Bill Mathias Nacogdoches, TX Irene Estores Gainesville, FL Nancy Ball Scarborough, ME

Nearby Physical Medicine & Rehabilitation Physician Providers in Missouri

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

One of 267 Physical Medicine & Rehabilitation Physician providers enrolled in Missouri, 5 are shown here.

Dr. Syed Abdul Khader
M.D.
Bridgeton, MO
Dr. Osvaldo Acosta-Rodriguez
MD
Jefferson City, MO
Dr. Michael Acuff
MD
Columbia, MO
Shraddha Adwalpalker
Saint Louis, MO
Dr. Ahmed Ali
M.D.
Florissant, MO

Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Phuong Nguyen, MD's specialty? ▼
Phuong Nguyen, MD specializes in Physical Medicine & Rehabilitation Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Phuong Nguyen, MD prescribe under Medicare Part D? ▼
In 2023, Phuong Nguyen, MD wrote 404 Medicare Part D claims totaling $22K in drug costs for 90 beneficiaries.
What is Phuong Nguyen, MD's Medicare quality score? ▼
Phuong Nguyen, MD has a CMS MIPS Final Score of 71.6/100 (Quality: 58.2, Cost: 44.2). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Phuong Nguyen, MD located? ▼
Phuong Nguyen, MD is located at 6420 CLAYTON RD, Saint Louis, MO, 63117. Phone: (314) 768-8205.
What is Phuong Nguyen, MD's NPI number? ▼
Phuong Nguyen, MD's National Provider Identifier (NPI) is 1841227402, issued on 06/27/2006.
Does Phuong Nguyen, MD prescribe opioids? ▼
Yes, Phuong Nguyen, MD had 13 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
There are 15,336 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does Phuong Nguyen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Phuong Nguyen, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Phuong Nguyen, MD accept Medicare? ▼
Phuong Nguyen, MD appears in CMS Medicare data with 404 Part D claims and 90 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Phuong Nguyen, MD's credentials? ▼
Phuong Nguyen, MD's NPI is 1841227402 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

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 editorial process.

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.