2026 NPPES data MOHS-Micrographic Surgery Physician NPI 1841516689 M.D.
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SAM TRUONG, M.D.

MOHS-Micrographic Surgery Physician in LAKE FOREST, 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 · 455 beneficiaries · MOHS-Micrographic Surgery Physician avg: 607
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$17.68
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: SAM TRUONG, M.D. is a MOHS-Micrographic Surgery Physician ([object Object]) practicing in LAKE FOREST, California with a Medicare Part D prescribing footprint of 1K claims across 455 beneficiaries — 8% brand-name prescribing . Industry payments of $17.68 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: SAM TRUONG, M.D. filed 1,052 Medicare Part D claims in 2023 across LAKE FOREST, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SAM TRUONG, 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).

SAM TRUONG, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/19/2010

NPI 1841516689

Primary specialty

MOHS-Micrographic Surgery Physician

Niche

1,102 US NPIs in this specialty

Medicare Part D claims

1,052 73% vs specialty avg

2023 prescription claims

Specialty avg: 607

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

Specialty board-certification context

Estimated specialty board-certified rate — MOHS-Micrographic Surgery Physician (ABMS / AOA reference)

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

Est. board-certified rate (MOHS-Micrographic Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (MOHS-Micrographic Surgery 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).

SAM TRUONG, M.D. is a MOHS-Micrographic Surgery Physician provider practicing in LAKE FOREST, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1841516689. 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.

SAM TRUONG, M.D. appears in the CMS NPPES registry as a MOHS-Micrographic Surgery Physician provider holding M.D. credentials at 23832 ROCKFIELD BLVD STE 220, LAKE FOREST, CA, 92630, with a listed phone of (949) 770-8115. NPI 1841516689 was issued on 04/19/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TRUONG 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 1,052 prescription claims written by this provider, covering 455 Medicare beneficiaries and totaling roughly $217K in drug spend, split 8% brand-name and 92% 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.

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

23832 ROCKFIELD BLVD STE 220
LAKE FOREST, CA 92630

Provider Details

NPI 1841516689
Specialty MOHS-Micrographic Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 04/19/2010

Hospital and facility affiliations

Facilities where SAM TRUONG, 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.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
GARDEN GROVE, 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 SAM TRUONG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$18

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 SAM TRUONG, M.D.. To verify SAM TRUONG, 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.

Brand vs generic prescribing mix · Generic-heavy

SAM TRUONG, M.D. — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 1,052 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.

1,052
Total Claims
$217K
Total Drug Cost
455
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,187
Total Day Supply
30,686
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$186K
Generic Drug Cost
$32K
Antibiotic Claims
72

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
1.22
Gender Split
51% female / 49% male
Age Distribution
<65: 13, 65-74: 198, 75-84: 186, 85+: 58

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Fluorouracil
134
Clobetasol Propionate
113
Hydrocortisone
70
Triamcinolone Acetonide
69
Ketoconazole
62
Fluocinonide
60
Calcipotriene
58
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
54
Doxycycline Monohydrate
45
Tacrolimus
44

* 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 SAM TRUONG, 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

SAM TRUONG, M.D.'s 1,052 claims are above 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 TRUONG.

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

Frequently Asked Questions

What is SAM TRUONG, M.D.'s specialty?
SAM TRUONG, M.D. specializes in MOHS-Micrographic Surgery Physician and practices in LAKE FOREST, California. Credentials: M.D..
How much does SAM TRUONG, M.D. prescribe under Medicare Part D?
In 2023, SAM TRUONG, M.D. wrote 1,052 Medicare Part D claims totaling $217K in drug costs for 455 beneficiaries.
Where is SAM TRUONG, M.D. located?
SAM TRUONG, M.D. is located at 23832 ROCKFIELD BLVD STE 220, LAKE FOREST, CA, 92630. Phone: (949) 770-8115.
What is SAM TRUONG, M.D.'s NPI number?
SAM TRUONG, M.D.'s National Provider Identifier (NPI) is 1841516689, issued on 04/19/2010.
Does SAM TRUONG, M.D. prescribe more brand-name or generic drugs?
SAM TRUONG, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $186K in brand drug costs.
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 SAM TRUONG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SAM TRUONG, M.D.'s most frequently prescribed drugs include Fluorouracil, Clobetasol Propionate, Hydrocortisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SAM TRUONG, M.D. accept Medicare?
SAM TRUONG, M.D. appears in CMS Medicare data with 1,052 Part D claims and 455 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SAM TRUONG, M.D.'s credentials?
SAM TRUONG, M.D.'s NPI is 1841516689 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