2026 NPPES data Cardiovascular Disease Physician NPI 1811383912 M.D.
Verify on CMS →

ANDREW NGUYEN, M.D.

Cardiovascular Disease Physician in CLACKAMAS, 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
1K
Medicare Part D claims · 312 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANDREW NGUYEN, M.D. filed 1,396 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in CLACKAMAS, Oregon, prescribing 78% generic.

1K
Part D claims, 2023
78%
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.

ANDREW NGUYEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,396 Top 21% higher than 79% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

ANDREW 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).

What does the federal data show about ANDREW NGUYEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/15/2015

NPI 1811383912

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

1,396 54% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Oregon

How Cardiovascular Disease Physician compares to other specialties among Oregon providers

Oregon providers

Cardiovascular Disease Physician share within Oregon

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Cardiovascular Disease Physician ABMS/AOA estimate

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Cardiovascular Disease 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).

ANDREW NGUYEN, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 10100 SE SUNNYSIDE RD, CLACKAMAS, OR, 97015, with a listed phone of (035) 571-6602. NPI 1811383912 was issued on 04/15/2015. 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 1,396 prescription claims written by this provider, covering 312 Medicare beneficiaries and totaling roughly $134K in drug spend, split 22% brand-name and 78% 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

10100 SE SUNNYSIDE RD
CLACKAMAS, OR 97015

Provider Details

NPI 1811383912
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 04/15/2015

Hospital and facility affiliations

Facilities where ANDREW 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.

HAWAII PERMANENTE MEDICAL GROUP INC
KAILUA KONA, HI

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

ANDREW NGUYEN, M.D. — brand share 22.0%
Specialty average (est.)

22% brand-name claims vs 78% generic, on 1,396 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.

1,396
Total Claims
$134K
Total Drug Cost
312
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,645
Total Day Supply
108,811
Brand vs Generic
22% brand / 78% generic
Brand Drug Cost
$115K
Generic Drug Cost
$19K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
76.3 years
Avg HCC Risk Score
1.49
Gender Split
44% female / 56% male
Age Distribution
<65: 12, 65-74: 116, 75-84: 142, 85+: 42

Top Prescribed Drugs (Medicare Part D)

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

What ANDREW 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
Metoprolol Succinate
141
Amiodarone Hcl
118
Pradaxa
Dabigatran Etexilate Mesylate
117
Losartan Potassium
115
Jardiance
Empagliflozin
100
Furosemide
89
Metoprolol Tartrate
82
Potassium Chloride
66
Atorvastatin Calcium
64
Spironolactone
52

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

Cardiovascular Disease Physician Overview

How ANDREW NGUYEN, M.D. fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

ANDREW NGUYEN, M.D.'s 1,396 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Oregon

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANDREW NGUYEN, M.D.'s specialty?
ANDREW NGUYEN, M.D. specializes in Cardiovascular Disease Physician and practices in CLACKAMAS, Oregon. Credentials: M.D..
How much does ANDREW NGUYEN, M.D. prescribe under Medicare Part D?
In 2023, ANDREW NGUYEN, M.D. wrote 1,396 Medicare Part D claims totaling $134K in drug costs for 312 beneficiaries.
Where is ANDREW NGUYEN, M.D. located?
ANDREW NGUYEN, M.D. is located at 10100 SE SUNNYSIDE RD, CLACKAMAS, OR, 97015. Phone: (035) 571-6602.
What is ANDREW NGUYEN, M.D.'s NPI number?
ANDREW NGUYEN, M.D.'s National Provider Identifier (NPI) is 1811383912, issued on 04/15/2015.
Does ANDREW NGUYEN, M.D. prescribe more brand-name or generic drugs?
ANDREW NGUYEN, M.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $115K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does ANDREW NGUYEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ANDREW NGUYEN, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Amiodarone Hcl, Pradaxa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANDREW NGUYEN, M.D. accept Medicare?
ANDREW NGUYEN, M.D. appears in CMS Medicare data with 1,396 Part D claims and 312 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANDREW NGUYEN, M.D.'s credentials?
ANDREW NGUYEN, M.D.'s NPI is 1811383912 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