2026 NPPES data Obstetrics Physician NPI 1912360652 M.D.
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CRYSTAL NHIEU, M.D.

Obstetrics Physician in BATON ROUGE, Louisiana. 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
296
Medicare Part D claims · 94 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.8557/100
▲ 8 pts above national avg 83.1 · [object Object]
Industry payments
$346.53
11 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CRYSTAL NHIEU, M.D. is a Obstetrics Physician ([object Object]) practicing in BATON ROUGE, Louisiana with a Medicare Part D prescribing footprint of 296 claims across 94 beneficiaries — 9% brand-name prescribing . Their CMS MIPS Final Score of 90.8557/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $346.53 across 11 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CRYSTAL NHIEU, M.D. reported a CMS MIPS final score of 90.8557 out of 100, above the 83.1 national average, and filed 296 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)

CRYSTAL NHIEU, M.D. 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).

CRYSTAL NHIEU, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 03/31/2016

NPI 1912360652

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

296 7% vs specialty avg

2023 prescription claims

Specialty avg: 319

MIPS final score

90.8557/100 7.7557000000000045% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Louisiana

How Obstetrics Physician compares to other specialties among Louisiana providers

Louisiana providers

Obstetrics Physician share within Louisiana

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

Medicare quality performance — MIPS

CRYSTAL NHIEU, M.D.'s 2023 MIPS final score plotted against the Obstetrics Physician national average

High performer (top quartile)
MIPS Final Score
90.8557/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obstetrics Physician) — 90.8557/100 vs national avg 83.1

0%100%National avg83%90.9%
MIPS final score (Obstetrics Physician) — 90.8557/100 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).

CRYSTAL NHIEU, M.D. is a Obstetrics Physician provider practicing in BATON ROUGE, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1912360652. 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.

CRYSTAL NHIEU, M.D. appears in the CMS NPPES registry as a Obstetrics Physician provider holding M.D. credentials at 500 RUE DE LA VIE ST STE 413, BATON ROUGE, LA, 70817, with a listed phone of (225) 215-7442. NPI 1912360652 was issued on 03/31/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NHIEU 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 296 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $11K in drug spend, split 9% brand-name and 91% 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 90.8557/100 for the 2023 performance year (Quality 90.2858, Cost 79.233), 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

500 RUE DE LA VIE ST STE 413
BATON ROUGE, LA 70817

Provider Details

NPI 1912360652
Specialty Obstetrics Physician
Credentials M.D.
Gender Female
NPI Issued 03/31/2016

CMS Quality Score (MIPS)

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

90.8557
Final Score
Avg: 83.1
90.2858
Quality
79.233
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CRYSTAL NHIEU, 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.

LOUISIANA WOMEN'S HEALTHCARE ASSOCIATES LLC
BATON ROUGE, LA

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 CRYSTAL NHIEU, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$347

Largest payer

Exeltis, USA 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.

Brand vs generic prescribing mix · Generic-heavy

CRYSTAL NHIEU, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 296 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.

296
Total Claims
$11K
Total Drug Cost
94
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
571
Total Day Supply
14,936
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$3K
Generic Drug Cost
$8K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
63.7 years
Avg HCC Risk Score
1.08
Gender Split
100% female / 0% male
Age Distribution
<65: 32, 65-74: 46, 75-84: 16, 85+: 0

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
130
Medroxyprogesterone Acetate
34
Clobetasol Propionate
30
Fluconazole
16
Metronidazole
12

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

Obstetrics Physician Overview

How CRYSTAL NHIEU, M.D. fits within the Obstetrics Physician landscape nationally.

1,402
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider

CRYSTAL NHIEU, M.D.'s 296 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in Louisiana

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

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

Frequently Asked Questions

What is CRYSTAL NHIEU, M.D.'s specialty?
CRYSTAL NHIEU, M.D. specializes in Obstetrics Physician and practices in BATON ROUGE, Louisiana. Credentials: M.D..
How much does CRYSTAL NHIEU, M.D. prescribe under Medicare Part D?
In 2023, CRYSTAL NHIEU, M.D. wrote 296 Medicare Part D claims totaling $11K in drug costs for 94 beneficiaries.
What is CRYSTAL NHIEU, M.D.'s Medicare quality score?
CRYSTAL NHIEU, M.D. has a CMS MIPS Final Score of 90.8557/100 (Quality: 90.2858, Cost: 79.233). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CRYSTAL NHIEU, M.D. located?
CRYSTAL NHIEU, M.D. is located at 500 RUE DE LA VIE ST STE 413, BATON ROUGE, LA, 70817. Phone: (225) 215-7442.
What is CRYSTAL NHIEU, M.D.'s NPI number?
CRYSTAL NHIEU, M.D.'s National Provider Identifier (NPI) is 1912360652, issued on 03/31/2016.
Does CRYSTAL NHIEU, M.D. prescribe more brand-name or generic drugs?
CRYSTAL NHIEU, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $3K 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 CRYSTAL NHIEU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CRYSTAL NHIEU, M.D.'s most frequently prescribed drugs include Estradiol, Medroxyprogesterone Acetate, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CRYSTAL NHIEU, M.D. accept Medicare?
CRYSTAL NHIEU, M.D. appears in CMS Medicare data with 296 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CRYSTAL NHIEU, M.D.'s credentials?
CRYSTAL NHIEU, M.D.'s NPI is 1912360652 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.
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