2026 NPPES data MOHS-Micrographic Surgery Physician NPI 1477564128 M.D.
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GRACE LIU, M.D.

MOHS-Micrographic Surgery Physician in NEWPORT BEACH, 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
186
Medicare Part D claims · 80 beneficiaries · MOHS-Micrographic Surgery Physician avg: 607
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
Industry payments
$2.8K
9 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GRACE LIU, M.D. is a MOHS-Micrographic Surgery Physician ([object Object]) practicing in NEWPORT BEACH, California with a Medicare Part D prescribing footprint of 186 claims across 80 beneficiaries . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $2.8K across 9 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GRACE LIU, M.D. reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 186 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)

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

GRACE LIU, M.D. at a glance

Below national average

NPI registry status

Active

Issued 08/10/2006

NPI 1477564128

Primary specialty

MOHS-Micrographic Surgery Physician

Niche

1,102 US NPIs in this specialty

Medicare Part D claims

186 69% vs specialty avg

2023 prescription claims

Specialty avg: 607

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How MOHS-Micrographic Surgery Physician compares to other specialties among California providers

California providers

MOHS-Micrographic Surgery Physician share within California

1. MOHS-Micrographic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
MOHS-Micrographic Surgery Physician share within California

Medicare quality performance — MIPS

GRACE LIU, M.D.'s 2023 MIPS final score plotted against the MOHS-Micrographic Surgery Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (MOHS-Micrographic Surgery Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (MOHS-Micrographic Surgery Physician) — 75/100 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).

GRACE LIU, M.D. is a MOHS-Micrographic Surgery Physician provider practicing in NEWPORT BEACH, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1477564128. 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.

GRACE LIU, M.D. appears in the CMS NPPES registry as a MOHS-Micrographic Surgery Physician provider holding M.D. credentials at 3991 MACARTHUR BLVD, NEWPORT BEACH, CA, 92660, with a listed phone of (949) 863-0988. NPI 1477564128 was issued on 08/10/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LIU 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 186 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $9K 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

MOHS-Micrographic Surgery Physician is a narrow specialty nationwide, with 1,102 enrolled providers across 52 states and an average of 607 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

3991 MACARTHUR BLVD
NEWPORT BEACH, CA 92660

Provider Details

NPI 1477564128
Specialty MOHS-Micrographic Surgery Physician
Credentials M.D.
Gender Female
NPI Issued 08/10/2006

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Individual

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 GRACE LIU, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$2.8K

Largest payer

ABBVIE 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 — 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 GRACE LIU, M.D.. To verify GRACE LIU, 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.

186
Total Claims
$9K
Total Drug Cost
80
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
198
Total Day Supply
4,548
Generic Drug Cost
$5K
Antibiotic Claims
40

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
0.96
Gender Split
63% female / 38% 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
Cephalexin
21
Ciclopirox
17
Clobetasol Propionate
15
Fluticasone Propionate
14
Doxycycline Hyclate
12
Valacyclovir
Valacyclovir Hcl
11

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

MOHS-Micrographic Surgery Physician Overview

How GRACE LIU, M.D. fits within the MOHS-Micrographic Surgery Physician landscape nationally.

1,102
MOHS-Micrographic Surgery Physician Providers in US
52
States with MOHS-Micrographic Surgery Physician
607
Avg Claims per Provider

GRACE LIU, M.D.'s 186 claims are below the specialty average of 607.

Nearby MOHS-Micrographic Surgery Physician Providers in California

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

Compare MOHS-Micrographic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GRACE LIU, M.D.'s specialty?
GRACE LIU, M.D. specializes in MOHS-Micrographic Surgery Physician and practices in NEWPORT BEACH, California. Credentials: M.D..
How much does GRACE LIU, M.D. prescribe under Medicare Part D?
In 2023, GRACE LIU, M.D. wrote 186 Medicare Part D claims totaling $9K in drug costs for 80 beneficiaries.
What is GRACE LIU, M.D.'s Medicare quality score?
GRACE LIU, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GRACE LIU, M.D. located?
GRACE LIU, M.D. is located at 3991 MACARTHUR BLVD, NEWPORT BEACH, CA, 92660. Phone: (949) 863-0988.
What is GRACE LIU, M.D.'s NPI number?
GRACE LIU, M.D.'s National Provider Identifier (NPI) is 1477564128, issued on 08/10/2006.
How many MOHS-Micrographic Surgery Physician providers are there in the US?
There are 1,102 MOHS-Micrographic Surgery Physician providers across 52 states in the US. The average MOHS-Micrographic Surgery Physician provider writes 607 Medicare Part D claims per year.
What drugs does GRACE LIU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GRACE LIU, M.D.'s most frequently prescribed drugs include Cephalexin, Ciclopirox, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GRACE LIU, M.D. accept Medicare?
GRACE LIU, M.D. appears in CMS Medicare data with 186 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GRACE LIU, M.D.'s credentials?
GRACE LIU, M.D.'s NPI is 1477564128 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