2026 NPPES data Dermatology Physician NPI 1851699532 M.D
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BIEN-AIMEE LAU, M.D

Dermatology Physician in FAIRFIELD, California. 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
1K
Medicare Part D claims · 308 beneficiaries · Dermatology Physician avg: 729
Industry payments
$50.47
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BIEN-AIMEE LAU, M.D filed 1,040 Medicare Part D claims in 2023 as a Dermatology Physician in FAIRFIELD, California.

1K
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.

BIEN-AIMEE LAU, M.D's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,040 Top 24% higher than 76% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

BIEN-AIMEE LAU, M.D practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 BIEN-AIMEE LAU, M.D?

Quality data not reported

NPI registry status

Active

Issued 03/04/2011

NPI 1851699532

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

1,040 43% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in California

How Dermatology Physician compares to other specialties among California providers

California providers

Dermatology Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Dermatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Dermatology Physician ABMS/AOA estimate

Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

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).

BIEN-AIMEE LAU, M.D appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D credentials at 2720 LOW CT, FAIRFIELD, CA, 94534, with a listed phone of (707) 427-4900. NPI 1851699532 was issued on 03/04/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LAU 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 1,040 prescription claims written by this provider, covering 308 Medicare beneficiaries and totaling roughly $45K 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.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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

2720 LOW CT
FAIRFIELD, CA 94534

Provider Details

NPI 1851699532
Specialty Dermatology Physician
Credentials M.D
Gender Female
NPI Issued 03/04/2011

Hospital and facility affiliations

Facilities where BIEN-AIMEE LAU, 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.

SUTTER VALLEY MEDICAL FOUNDATION
FAIRFIELD, CA

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 BIEN-AIMEE LAU, M.D. Source: openpaymentsdata.cms.gov.

Total received

$50

Largest payer

GENZYME CORPORATION

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 — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to BIEN-AIMEE LAU, M.D. To verify BIEN-AIMEE LAU, M.D's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

1,040
Total Claims
$45K
Total Drug Cost
308
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,218
Total Day Supply
32,014
Generic Drug Cost
$34K
Antibiotic Claims
100

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.11
Gender Split
52% female / 48% male
Age Distribution
<65: 30, 65-74: 136, 75-84: 121, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

What BIEN-AIMEE LAU, M.D 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
Hydrocortisone
147
Triamcinolone Acetonide
121
Doxycycline Monohydrate
79
Ketoconazole
78
Clobetasol Propionate
67
Hydroxyzine Hcl
67
Fluocinonide
61
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
52
Fluorouracil
50
Mupirocin
37

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

Dermatology Physician Overview

How BIEN-AIMEE LAU, M.D fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

BIEN-AIMEE LAU, M.D's 1,040 claims are above the specialty average of 729.

Nearby Dermatology Physician Providers in California

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

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

Frequently Asked Questions

What is BIEN-AIMEE LAU, M.D's specialty?
BIEN-AIMEE LAU, M.D specializes in Dermatology Physician and practices in FAIRFIELD, California. Credentials: M.D.
How much does BIEN-AIMEE LAU, M.D prescribe under Medicare Part D?
In 2023, BIEN-AIMEE LAU, M.D wrote 1,040 Medicare Part D claims totaling $45K in drug costs for 308 beneficiaries.
Where is BIEN-AIMEE LAU, M.D located?
BIEN-AIMEE LAU, M.D is located at 2720 LOW CT, FAIRFIELD, CA, 94534. Phone: (707) 427-4900.
What is BIEN-AIMEE LAU, M.D's NPI number?
BIEN-AIMEE LAU, M.D's National Provider Identifier (NPI) is 1851699532, issued on 03/04/2011.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does BIEN-AIMEE LAU, M.D prescribe most often?
Based on 2023 Medicare Part D data, BIEN-AIMEE LAU, M.D's most frequently prescribed drugs include Hydrocortisone, Triamcinolone Acetonide, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BIEN-AIMEE LAU, M.D accept Medicare?
BIEN-AIMEE LAU, M.D appears in CMS Medicare data with 1,040 Part D claims and 308 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BIEN-AIMEE LAU, M.D's credentials?
BIEN-AIMEE LAU, M.D's NPI is 1851699532 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.
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