2026 NPPES data Obstetrics Physician NPI 1649378761 D.O.
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PHAN NGUYEN, D.O.

Obstetrics Physician in NAPLES, Florida. 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
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
89.6733/100
▲ 7 pts above national avg 83.1 · [object Object]
Industry payments
$10.5K
47 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: PHAN NGUYEN, D.O. is a Obstetrics Physician ([object Object]) practicing in NAPLES, Florida with a Medicare Part D prescribing footprint of 165 claims across 73 beneficiaries — 13% brand-name prescribing . Their CMS MIPS Final Score of 89.6733/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $10.5K across 47 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: PHAN NGUYEN, D.O. reported a CMS MIPS final score of 89.6733 out of 100, above the 83.1 national average, and filed 165 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)

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).

PHAN NGUYEN, D.O. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 09/20/2006

NPI 1649378761

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

165 48% vs specialty avg

2023 prescription claims

Specialty avg: 319

MIPS final score

89.6733/100 6.573300000000003% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Florida

How Obstetrics Physician compares to other specialties among Florida providers

Florida providers

Obstetrics Physician share within Florida

1. Obstetrics Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics Physician share within Florida

Medicare quality performance — MIPS

PHAN NGUYEN, D.O.'s 2023 MIPS final score plotted against the Obstetrics Physician national average

High performer (top quartile)
MIPS Final Score
89.6733/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obstetrics Physician) — 89.6733/100 vs national avg 83.1

0%100%National avg83%89.7%
MIPS final score (Obstetrics Physician) — 89.6733/100 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).

PHAN NGUYEN, D.O. is a Obstetrics Physician provider practicing in NAPLES, Florida, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1649378761. 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.

PHAN NGUYEN, D.O. appears in the CMS NPPES registry as a 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. 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 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. 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 89.6733/100 for the 2023 performance year (Quality 97.8656, Cost 67.7122), compared with the national average of 83.1.

Obstetrics Physician is a narrow specialty nationwide, with 1,402 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

1890 SW HEALTH PKWY STE 303
NAPLES, FL 34109

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%
Specialty average (est.)

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.

1,402
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.

Compare Obstetrics Physician nationally: see state-by-state distribution →

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 89.6733/100 (Quality: 97.8656, Cost: 67.7122). 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 1,402 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

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