NPI registry status
Active
2026 NPPES data Obstetrics Physician NPI 1649378761 D.O.
Verify on CMS → Phan Nguyen, D.O.
Obstetrics Physician in Naples, Florida.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,396 in Obstetrics 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
165
Medicare Part D claims · 73 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
89.7/100
▲ 7 pts above national avg 83.1 · Exceptional
Industry payments
$10.5K
47 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Phan Nguyen, D.O. reported a CMS MIPS final score of 89.7/100 - above the 83.1 national average - and filed 165 Medicare Part D claims in 2023.
- 89.7/100
- MIPS score · +7 vs avg
- 165
- Part D claims, 2023
- 87%
- 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.
Phan Nguyen, 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
90 Top 42% higher than 58% of 477,587 scored providers
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
Where Phan Nguyen, D.O. sits
This provider among obstetrics physician peers
Across the 243 obstetrics physician providers who report both Medicare Part D prescribing and a MIPS quality score, Phan Nguyen, D.O. writes more Part D claims than 64% of them and scores higher on MIPS quality than 56% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one obstetrics physician peer from a representative sample of 60; the gold marker is Phan Nguyen, D.O.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Phan Nguyen, 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 Phan Nguyen, D.O.?
High performer (top quartile)Primary specialty
Obstetrics Physician
Medicare Part D claims
165 48% vs specialty avg
MIPS final score
89.7/100 6.6 pts vs avg
Specialty distribution in Florida
How Obstetrics Physician compares to other specialties among Florida providers
Medicare quality performance, MIPS
Phan Nguyen, D.O.'s 2023 MIPS final score plotted against the Obstetrics Physician national average
- MIPS Final Score
- 89.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Obstetrics Physician) - 89.7/100 vs national avg 83.1
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).
Phan Nguyen, D.O. appears in the CMS NPPES registry as an Obstetrics Physician provider holding D.O. credentials at 1890 SW HEALTH PKWY STE 303, Naples, FL, 34109, with a listed phone of (239) 593-0990. NPI 1649378761 was issued on 09/20/2006.
Medicare Part D records for calendar year 2023 show 165 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $21K in drug spend, split 13% brand-name and 87% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 89.7/100 for the 2023 performance year (Quality 97.9, Cost 67.7), compared with the national average of 83.1.
Obstetrics Physician is a narrow specialty nationwide, with 1,396 enrolled providers across 54 states and an average of 319 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
Provider Details
| NPI | 1649378761 |
|---|---|
| Specialty | Obstetrics Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 09/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
89.6733
Final Score
Avg: 83.1
97.8656
Quality
67.7122
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Phan 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.
Florida Woman Care LLC
Naples, FL
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 Phan Nguyen, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$10.5K
Largest payer
INTUITIVE SURGICAL, 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.
License & disciplinary context - Florida FLDOH 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 ~75K Florida medical licensees in 2023 - they are NOT specific to Phan Nguyen, D.O.. To verify Phan Nguyen, D.O.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Phan Nguyen, D.O. - brand share 13.0%
Obstetrics Physician average
13% brand-name claims vs 87% generic, on 165 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.
165
Total Claims
$21K
Total Drug Cost
73
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 351
- Total Day Supply
- 9,572
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 71.6 years
- Avg HCC Risk Score
- 0.84
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Estradiol | 38 |
| Yuvafem Estradiol | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics Physician Overview
How Phan Nguyen, D.O. fits within the Obstetrics Physician landscape nationally.
1,396
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider
Phan Nguyen, D.O.'s 165 claims are below the specialty average of 319.
Nearby Obstetrics Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Nguyen.
Dr. Guillermo Achong
M.D.
Doral, FL
Dr. Michael Allison
MD
Clearwater, FL
Dr. Robert Bass
M.D.
Plantation, FL
Dr. Jose Berthe
MD
Coral Springs, FL
Dr. Felix Bigay-Rodriguez
M.D.
Davenport, FL
Compare Obstetrics Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Florida medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Phan Nguyen, D.O.'s specialty? ▼
Phan Nguyen, D.O. specializes in Obstetrics Physician and practices in Naples, Florida. Credentials: D.O..
How much does Phan Nguyen, D.O. prescribe under Medicare Part D? ▼
In 2023, Phan Nguyen, D.O. wrote 165 Medicare Part D claims totaling $21K in drug costs for 73 beneficiaries.
What is Phan Nguyen, D.O.'s Medicare quality score? ▼
Phan Nguyen, D.O. has a CMS MIPS Final Score of 89.7/100 (Quality: 97.9, Cost: 67.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Phan Nguyen, D.O. located? ▼
Phan Nguyen, D.O. is located at 1890 SW HEALTH PKWY STE 303, Naples, FL, 34109. Phone: (239) 593-0990.
What is Phan Nguyen, D.O.'s NPI number? ▼
Phan Nguyen, D.O.'s National Provider Identifier (NPI) is 1649378761, issued on 09/20/2006.
Does Phan Nguyen, D.O. prescribe more brand-name or generic drugs? ▼
Phan Nguyen, D.O.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $12K in brand drug costs.
How many Obstetrics Physician providers are there in the US? ▼
There are 1,396 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does Phan Nguyen, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Phan Nguyen, D.O.'s most frequently prescribed drugs include Estradiol, Yuvafem. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Phan Nguyen, D.O. accept Medicare? ▼
Phan Nguyen, D.O. appears in CMS Medicare data with 165 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Phan Nguyen, D.O.'s credentials? ▼
Phan Nguyen, D.O.'s NPI is 1649378761 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
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 PlainDoctor editorial team.
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.