2026 NPPES data Cardiovascular Disease Physician NPI 1366782377 D.O.
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HIEU HUYNH, D.O.

Cardiovascular Disease Physician in COLONIAL HEIGHTS, Virginia. 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
828
Medicare Part D claims · 215 beneficiaries · Cardiovascular Disease Physician avg: 3K
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
Industry payments
$1.0K
24 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

HIEU HUYNH, D.O. reported a CMS MIPS final score of 75/100 — below the 83.1 national average — and filed 828 Medicare Part D claims in 2023.

75/100
MIPS score · -8 vs avg
828
Part D claims, 2023
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.

HIEU HUYNH, D.O.'s MIPS score vs every scored U.S. clinician

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

75 15th percentile higher than 15% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. 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

Board certification likely (heuristic — not verified)

HIEU HUYNH, D.O. 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 HIEU HUYNH, D.O.?

Below national average

NPI registry status

Active

Issued 02/28/2013

NPI 1366782377

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

828 73% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Virginia

How Cardiovascular Disease Physician compares to other specialties among Virginia providers

Virginia providers

Cardiovascular Disease Physician share within Virginia

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

Medicare quality performance — MIPS

HIEU HUYNH, D.O.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Cardiovascular Disease Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Cardiovascular Disease Physician) — 75/100 vs national avg 83.1

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).

HIEU HUYNH, D.O. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding D.O. credentials at 445 CHARLES H DIMMOCK PKWY STE 100, COLONIAL HEIGHTS, VA, 23834, with a listed phone of (804) 520-1764. NPI 1366782377 was issued on 02/28/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HUYNH 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 828 prescription claims written by this provider, covering 215 Medicare beneficiaries and totaling roughly $202K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

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

445 CHARLES H DIMMOCK PKWY STE 100
COLONIAL HEIGHTS, VA 23834

Provider Details

NPI 1366782377
Specialty Cardiovascular Disease Physician
Credentials D.O.
Gender Male
NPI Issued 02/28/2013

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Group practice

Hospital and facility affiliations

Facilities where HIEU HUYNH, D.O. 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.

GEISINGER CLINIC
SCRANTON, PA

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 HIEU HUYNH, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$1.0K

Largest payer

Abbott Laboratories

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.

Medicare Part D Prescribing Data

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

828
Total Claims
$202K
Total Drug Cost
215
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,597
Total Day Supply
47,311
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.85
Gender Split
47% female / 53% male
Age Distribution
<65: 14, 65-74: 91, 75-84: 93, 85+: 17

Top Prescribed Drugs (Medicare Part D)

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

What HIEU HUYNH, D.O. 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
173
Eliquis
Apixaban
138
Amiodarone Hcl
99
Flecainide Acetate
66
Clopidogrel
Clopidogrel Bisulfate
50
Famotidine
27
Carvedilol
25
Xarelto
Rivaroxaban
20
Entresto
Sacubitril/Valsartan
17
Atorvastatin Calcium
16

* 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 HIEU HUYNH, D.O. 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

HIEU HUYNH, D.O.'s 828 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Virginia

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

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

Frequently Asked Questions

What is HIEU HUYNH, D.O.'s specialty?
HIEU HUYNH, D.O. specializes in Cardiovascular Disease Physician and practices in COLONIAL HEIGHTS, Virginia. Credentials: D.O..
How much does HIEU HUYNH, D.O. prescribe under Medicare Part D?
In 2023, HIEU HUYNH, D.O. wrote 828 Medicare Part D claims totaling $202K in drug costs for 215 beneficiaries.
What is HIEU HUYNH, D.O.'s Medicare quality score?
HIEU HUYNH, D.O. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is HIEU HUYNH, D.O. located?
HIEU HUYNH, D.O. is located at 445 CHARLES H DIMMOCK PKWY STE 100, COLONIAL HEIGHTS, VA, 23834. Phone: (804) 520-1764.
What is HIEU HUYNH, D.O.'s NPI number?
HIEU HUYNH, D.O.'s National Provider Identifier (NPI) is 1366782377, issued on 02/28/2013.
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 HIEU HUYNH, D.O. prescribe most often?
Based on 2023 Medicare Part D data, HIEU HUYNH, D.O.'s most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Amiodarone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HIEU HUYNH, D.O. accept Medicare?
HIEU HUYNH, D.O. appears in CMS Medicare data with 828 Part D claims and 215 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HIEU HUYNH, D.O.'s credentials?
HIEU HUYNH, D.O.'s NPI is 1366782377 with credentials D.O.. 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.
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