2026 NPPES data Colon & Rectal Surgery Physician NPI 1285782987 M.D.
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PHUONG NGUYEN, M.D.

Colon & Rectal Surgery Physician in REDMOND, Oregon. 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
515
Medicare Part D claims · 313 beneficiaries · Colon & Rectal Surgery Physician avg: 196
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$798.08
11 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: PHUONG NGUYEN, M.D. is a Colon & Rectal Surgery Physician ([object Object]) practicing in REDMOND, Oregon with a Medicare Part D prescribing footprint of 515 claims across 313 beneficiaries — 47% brand-name prescribing . Industry payments of $798.08 across 11 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: PHUONG NGUYEN, M.D. filed 515 Medicare Part D claims in 2023 across REDMOND, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PHUONG NGUYEN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PHUONG NGUYEN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 01/08/2007

NPI 1285782987

Primary specialty

Colon & Rectal Surgery Physician

Niche

1,608 US NPIs in this specialty

Medicare Part D claims

515 163% vs specialty avg

2023 prescription claims

Specialty avg: 196

Specialty distribution in Oregon

How Colon & Rectal Surgery Physician compares to other specialties among Oregon providers

Oregon providers

Colon & Rectal Surgery Physician share within Oregon

1. Colon & Rectal Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Colon & Rectal Surgery Physician share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Colon & Rectal Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Colon & Rectal Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Colon & Rectal Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Colon & Rectal Surgery Physician) — 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).

PHUONG NGUYEN, M.D. is a Colon & Rectal Surgery Physician provider practicing in REDMOND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1285782987. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

PHUONG NGUYEN, M.D. appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding M.D. credentials at 1315 NW 4TH ST STE A, REDMOND, OR, 97756, with a listed phone of (541) 548-7761. NPI 1285782987 was issued on 01/08/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NGUYEN 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 515 prescription claims written by this provider, covering 313 Medicare beneficiaries and totaling roughly $33K in drug spend, split 47% brand-name and 53% 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.

Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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

1315 NW 4TH ST STE A
REDMOND, OR 97756

Provider Details

NPI 1285782987
Specialty Colon & Rectal Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 01/08/2007

Hospital and facility affiliations

Facilities where PHUONG 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.

ST CHARLES HEALTH SYSTEM INC
REDMOND, OR

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for PHUONG NGUYEN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$798

Largest payer

Davol Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

PHUONG NGUYEN, M.D. — brand share 47.0%
Specialty average (est.)

47% brand-name claims vs 53% generic, on 515 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.

515
Total Claims
$33K
Total Drug Cost
313
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
543
Total Day Supply
1,919
Brand vs Generic
47% brand / 53% generic
Brand Drug Cost
$30K
Generic Drug Cost
$3K
Antibiotic Claims
31

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
0.98
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ondansetron Hcl
201
Clenpiq
Sod Picosulf/Mag Ox/Citric Ac
82
Metronidazole
13
Neomycin Sulfate
11
Sod Sulf-Potass Sulf-Mag Sulf
"Sodium
N/A
Suprep
"Sodium
N/A

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

Colon & Rectal Surgery Physician Overview

How PHUONG NGUYEN, M.D. fits within the Colon & Rectal Surgery Physician landscape nationally.

1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider

PHUONG NGUYEN, M.D.'s 515 claims are above the specialty average of 196.

Nearby Colon & Rectal Surgery Physician Providers in Oregon

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

Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PHUONG NGUYEN, M.D.'s specialty?
PHUONG NGUYEN, M.D. specializes in Colon & Rectal Surgery Physician and practices in REDMOND, Oregon. Credentials: M.D..
How much does PHUONG NGUYEN, M.D. prescribe under Medicare Part D?
In 2023, PHUONG NGUYEN, M.D. wrote 515 Medicare Part D claims totaling $33K in drug costs for 313 beneficiaries.
Where is PHUONG NGUYEN, M.D. located?
PHUONG NGUYEN, M.D. is located at 1315 NW 4TH ST STE A, REDMOND, OR, 97756. Phone: (541) 548-7761.
What is PHUONG NGUYEN, M.D.'s NPI number?
PHUONG NGUYEN, M.D.'s National Provider Identifier (NPI) is 1285782987, issued on 01/08/2007.
Does PHUONG NGUYEN, M.D. prescribe more brand-name or generic drugs?
PHUONG NGUYEN, M.D.'s prescribing is 47% brand-name and 53% generic drugs by claim count, with $30K in brand drug costs.
How many Colon & Rectal Surgery Physician providers are there in the US?
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
What drugs does PHUONG NGUYEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PHUONG NGUYEN, M.D.'s most frequently prescribed drugs include Ondansetron Hcl, Clenpiq, Metronidazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PHUONG NGUYEN, M.D. accept Medicare?
PHUONG NGUYEN, M.D. appears in CMS Medicare data with 515 Part D claims and 313 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PHUONG NGUYEN, M.D.'s credentials?
PHUONG NGUYEN, M.D.'s NPI is 1285782987 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

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