2026 NPPES data Geriatric Medicine (Family Medicine) Physician NPI 1255777397 D.O.
Verify on CMS →

TUYEN NGUYEN, D.O.

Geriatric Medicine (Family Medicine) Physician in BYRON CENTER, Michigan. 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
11K
Medicare Part D claims · 690 beneficiaries · Geriatric Medicine (Family Medicine) Physician avg: 5K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
What the federal data reveals: TUYEN NGUYEN, D.O. is a Geriatric Medicine (Family Medicine) Physician ([object Object]) practicing in BYRON CENTER, Michigan with a Medicare Part D prescribing footprint of 11K claims across 690 beneficiaries — 13% brand-name prescribing . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: TUYEN NGUYEN, D.O. reported a CMS MIPS final score of 100 out of 100, above the 83.1 national average, and filed 11,386 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

TUYEN NGUYEN, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 4 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

TUYEN NGUYEN, D.O. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/15/2013

NPI 1255777397

Primary specialty

Geriatric Medicine (Family Medicine) Physician

Niche

1,779 US NPIs in this specialty

Medicare Part D claims

11,386 135% vs specialty avg

2023 prescription claims

Specialty avg: 4,854

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Michigan

How Geriatric Medicine (Family Medicine) Physician compares to other specialties among Michigan providers

Michigan providers

Geriatric Medicine (Family Medicine) Physician share within Michigan

1. Geriatric Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Family Medicine) Physician share within Michigan

Medicare quality performance — MIPS

TUYEN NGUYEN, D.O.'s 2023 MIPS final score plotted against the Geriatric Medicine (Family Medicine) Physician national average

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

MIPS final score (Geriatric Medicine (Family Medicine) Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Geriatric Medicine (Family Medicine) Physician) — 100/100 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).

TUYEN NGUYEN, D.O. is a Geriatric Medicine (Family Medicine) Physician provider practicing in BYRON CENTER, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1255777397. 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.

TUYEN NGUYEN, D.O. appears in the CMS NPPES registry as a Geriatric Medicine (Family Medicine) Physician provider holding D.O. credentials at 7751 BYRON CENTER AVE SW STE C, BYRON CENTER, MI, 49315, with a listed phone of (616) 267-7668. NPI 1255777397 was issued on 05/15/2013. 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 11,386 prescription claims written by this provider, covering 690 Medicare beneficiaries and totaling roughly $845K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 3.1%. 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 100/100 for the 2023 performance year (Quality 87.5432), compared with the national average of 83.1.

Geriatric Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 1,779 enrolled providers across 52 states and an average of 4,854 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

7751 BYRON CENTER AVE SW STE C
BYRON CENTER, MI 49315

Provider Details

NPI 1255777397
Specialty Geriatric Medicine (Family Medicine) Physician
Credentials D.O.
Gender Male
NPI Issued 05/15/2013

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
87.5432
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where TUYEN NGUYEN, 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.

CENTER FOR PHYSICAL REHABILITATION AND THERAPY LP
GRAND RAPIDS, MI
CENTER FOR PHYSICAL REHABILITATION INC
GRAND RAPIDS, MI
GREAT LAKES THERAPY HOUSECALLS PC
TRAVERSE CITY, MI
SPECTRUM HEALTH PRIMARY CARE PARTNERS
GRAND RAPIDS, MI

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 — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to TUYEN NGUYEN, D.O.. To verify TUYEN NGUYEN, D.O.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

TUYEN NGUYEN, D.O. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 11,386 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.

11,386
Total Claims
$845K
Total Drug Cost
690
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,801
Total Day Supply
414,625
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$557K
Generic Drug Cost
$281K
Opioid Claims
358 (3.1% rate)
Antibiotic Claims
295

Patient Demographics

Average Patient Age
84.4 years
Avg HCC Risk Score
1.70
Gender Split
66% female / 34% 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
Levothyroxine Sodium
566
Atorvastatin Calcium
497
Lisinopril
365
Metoprolol Succinate
345
Sertraline Hcl
341
Furosemide
333
Amlodipine Besylate
330
Gabapentin
300
Eliquis
Apixaban
280
Losartan Potassium
194

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

Geriatric Medicine (Family Medicine) Physician Overview

How TUYEN NGUYEN, D.O. fits within the Geriatric Medicine (Family Medicine) Physician landscape nationally.

1,779
Geriatric Medicine (Family Medicine) Physician Providers in US
52
States with Geriatric Medicine (Family Medicine) Physician
4,854
Avg Claims per Provider

TUYEN NGUYEN, D.O.'s 11,386 claims are above the specialty average of 4,854.

Nearby Geriatric Medicine (Family Medicine) Physician Providers in Michigan

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

Compare Geriatric Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TUYEN NGUYEN, D.O.'s specialty?
TUYEN NGUYEN, D.O. specializes in Geriatric Medicine (Family Medicine) Physician and practices in BYRON CENTER, Michigan. Credentials: D.O..
How much does TUYEN NGUYEN, D.O. prescribe under Medicare Part D?
In 2023, TUYEN NGUYEN, D.O. wrote 11,386 Medicare Part D claims totaling $845K in drug costs for 690 beneficiaries.
What is TUYEN NGUYEN, D.O.'s Medicare quality score?
TUYEN NGUYEN, D.O. has a CMS MIPS Final Score of 100/100 (Quality: 87.5432). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TUYEN NGUYEN, D.O. located?
TUYEN NGUYEN, D.O. is located at 7751 BYRON CENTER AVE SW STE C, BYRON CENTER, MI, 49315. Phone: (616) 267-7668.
What is TUYEN NGUYEN, D.O.'s NPI number?
TUYEN NGUYEN, D.O.'s National Provider Identifier (NPI) is 1255777397, issued on 05/15/2013.
Does TUYEN NGUYEN, D.O. prescribe more brand-name or generic drugs?
TUYEN NGUYEN, D.O.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $557K in brand drug costs.
Does TUYEN NGUYEN, D.O. prescribe opioids?
Yes, TUYEN NGUYEN, D.O. had 358 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
How many Geriatric Medicine (Family Medicine) Physician providers are there in the US?
There are 1,779 Geriatric Medicine (Family Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Family Medicine) Physician provider writes 4,854 Medicare Part D claims per year.
What drugs does TUYEN NGUYEN, D.O. prescribe most often?
Based on 2023 Medicare Part D data, TUYEN NGUYEN, D.O.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TUYEN NGUYEN, D.O. accept Medicare?
TUYEN NGUYEN, D.O. appears in CMS Medicare data with 11,386 Part D claims and 690 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TUYEN NGUYEN, D.O.'s credentials?
TUYEN NGUYEN, D.O.'s NPI is 1255777397 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