NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1427194083 DO
Verify on CMS → Spencer Lau, DO
General Practice Physician in Honolulu, Hawaii.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,838 in General Practice Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
4K
Medicare Part D claims · 228 beneficiaries · General Practice Physician avg: 3K
Industry payments
$242.44
7 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Spencer Lau, DO filed 3,853 Medicare Part D claims in 2024 as a General Practice Physician in Honolulu, Hawaii.
- 4K
- Part D claims, 2024
- $242.44
- industry payments (Sunshine Act)
- ≥91st
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Spencer Lau, DO
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1427194083), first enumerated 01/30/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,853 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$242.44 in reported industry payments (7 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1427194083 · General Practice Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1427194083
- ENUM-MID 2007
- TAX-MID 17K General Practice
- RX-MID 3,853
- BOOK-THIN 177 in Hawaii
- PHOTO-ENUM Christopher Sellers,… · 2007
Spencer Lau, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,853 ≥ 91st percentile 91% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Spencer Lau, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Spencer Lau, DO?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
3,853 30% vs specialty avg
Specialty distribution in Hawaii
How General Practice Physician compares to other specialties among Hawaii providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for General Practice Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1427194083 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 01/30/2007 |
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 Spencer Lau, DO. Source: openpaymentsdata.cms.gov.
Total received
$242
Largest payer
AstraZeneca Pharmaceuticals LP
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
3,853
Total Claims
$233K
Total Drug Cost
228
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,486.033
- Total Day Supply
- 120,420
- Generic Drug Cost
- $89K
- Opioid Claims
- 2,172 (56.4% rate)
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 67.2 years
- Avg HCC Risk Score
- 1.83
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 60, 65-74: 123, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Spencer Lau, DO prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
811 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
405 claims
- Morphine Sulfate Er 269
Morphine Sulfate Er
269 claims
- Methadone Hcl 209
Methadone Hcl
209 claims
- Tramadol Hcl 139
Tramadol Hcl
139 claims
- Gabapentin 137
Gabapentin
137 claims
- Morphine Sulfate 118
Morphine Sulfate
118 claims
- Pregabalin 115
Pregabalin
115 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 811 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 405 |
| Morphine Sulfate Er Morphine Sulfate | 269 |
| Methadone Hcl | 209 |
| Tramadol Hcl | 139 |
| Gabapentin | 137 |
| Morphine Sulfate | 118 |
| Pregabalin | 115 |
| Zolpidem Tartrate | 109 |
| Alprazolam | 92 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Spencer Lau, DO fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Spencer Lau, DO's 3,853 claims are above the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lau, both outside Hawaii so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby General Practice Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Lau.
One of 177 General Practice Physician providers enrolled in Hawaii, 5 are shown here.
Dr. Michael Aguilar
D.O.
Tripler Army Medical Center, HI
Dr. Cecilia Alailima
M.D.
Honolulu, HI
Dr. Thomas Austin
MD
Princeville, HI
Dr. Jason Banarsee
DO
Tripler Amc, HI
Dr. James Barahal
M.D.
Honolulu, HI
Compare General Practice Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Spencer Lau, DO's specialty? ▼
Spencer Lau, DO specializes in General Practice Physician and practices in Honolulu, Hawaii. Credentials: DO.
How much does Spencer Lau, DO prescribe under Medicare Part D? ▼
In 2024, Spencer Lau, DO wrote 3,853 Medicare Part D claims totaling $233K in drug costs for 228 beneficiaries.
Where is Spencer Lau, DO located? ▼
Spencer Lau, DO is located at 549 HALEMAUMAU STREET, Honolulu, HI, 96821. Phone: (808) 373-2167.
What is Spencer Lau, DO's NPI number? ▼
Spencer Lau, DO's National Provider Identifier (NPI) is 1427194083, issued on 01/30/2007.
Does Spencer Lau, DO prescribe opioids? ▼
Yes, Spencer Lau, DO had 2,172 opioid claims in 2024 with an opioid prescribing rate of 56.4%.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Spencer Lau, DO prescribe most often? ▼
Based on 2024 Medicare Part D data, Spencer Lau, DO's most frequently prescribed drugs include Oxycodone Hcl, Hydrocodone-Acetaminophen, Morphine Sulfate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Spencer Lau, DO accept Medicare? ▼
Spencer Lau, DO appears in CMS Medicare data with 3,853 Part D claims and 228 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Spencer Lau, DO's credentials? ▼
Spencer Lau, DO's NPI is 1427194083 with credentials DO. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.