NPI registry status
Active
2026 NPPES data Pharmacist NPI 1508167883 RPH
Verify on CMS → Wai Yee Chan, RPH
Pharmacist in Laguna Beach, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 291,043 in Pharmacist, 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
45
Medicare Part D claims · 42 beneficiaries · Pharmacist avg: 135
Generic prescribing
0%
generic claims · 80% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Wai Yee Chan, RPH filed 45 Medicare Part D claims in 2023 as a Pharmacist in Laguna Beach, California, prescribing 0% generic.
- 45
- Part D claims, 2023
- 0%
- generic prescribing
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.
Wai Yee Chan, RPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
45 0th percentile higher than 0% of 1,370,886 prescribers
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
What does the federal data show about Wai Yee Chan, RPH?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
45 67% vs specialty avg
Specialty distribution in California
How Pharmacist compares to other specialties among California 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 Pharmacist. 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).
Wai Yee Chan, RPH appears in the CMS NPPES registry as a Pharmacist provider holding RPH credentials at 600 N COAST HWY, Laguna Beach, CA, 92651, with a listed phone of (949) 376-3383. NPI 1508167883 was issued on 11/03/2010.
Medicare Part D records for calendar year 2023 show 45 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $10K in drug spend, split 80% brand-name and 0% generic by claim count.
Pharmacist is a high-volume specialty nationwide, with 291,043 enrolled providers across 56 states and an average of 135 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
Provider Details
| NPI | 1508167883 |
|---|---|
| Specialty | Pharmacist |
| Credentials | RPH |
| Gender | Female |
| NPI Issued | 11/03/2010 |
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 Wai Yee Chan, RPH. To verify Wai Yee Chan, RPH'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 · Brand-heavy
Wai Yee Chan, RPH - brand share 80.0%
Pharmacist average
80% brand-name claims vs 0% generic, on 45 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.
45
Total Claims
$10K
Total Drug Cost
42
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 45
- Total Day Supply
- 277
- Brand vs Generic
- 80% brand / 0% generic
- Brand Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 73.2 years
- Avg HCC Risk Score
- 0.98
- Gender Split
- 52% female / 48% 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 |
|---|---|
| Arexvy Rsvpref3 Antigen/As01e/Pf | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Wai Yee Chan, RPH fits within the Pharmacist landscape nationally.
291,043
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider
Wai Yee Chan, RPH's 45 claims are below the specialty average of 135.
Nearby Pharmacist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chan.
Dr. Caroline A-Haja
PHARM.D.
San Pedro, CA
Gayatri Aachi
Livermore, CA
Dr. Mahshid Aalam
PHARMD
Los Angeles, CA
Jaleh Aaliiveli
San Ramon, CA
Dr. Cassi Aarvig
RPH
Tracy, CA
Compare Pharmacist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pharmacist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
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Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Wai Yee Chan, RPH's specialty? ▼
Wai Yee Chan, RPH specializes in Pharmacist and practices in Laguna Beach, California. Credentials: RPH.
How much does Wai Yee Chan, RPH prescribe under Medicare Part D? ▼
In 2023, Wai Yee Chan, RPH wrote 45 Medicare Part D claims totaling $10K in drug costs for 42 beneficiaries.
Where is Wai Yee Chan, RPH located? ▼
Wai Yee Chan, RPH is located at 600 N COAST HWY, Laguna Beach, CA, 92651. Phone: (949) 376-3383.
What is Wai Yee Chan, RPH's NPI number? ▼
Wai Yee Chan, RPH's National Provider Identifier (NPI) is 1508167883, issued on 11/03/2010.
Does Wai Yee Chan, RPH prescribe more brand-name or generic drugs? ▼
Wai Yee Chan, RPH's prescribing is 80% brand-name and 0% generic drugs by claim count, with $9K in brand drug costs.
How many Pharmacist providers are there in the US? ▼
There are 291,043 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does Wai Yee Chan, RPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Wai Yee Chan, RPH's most frequently prescribed drugs include Arexvy. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Wai Yee Chan, RPH accept Medicare? ▼
Wai Yee Chan, RPH appears in CMS Medicare data with 45 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Wai Yee Chan, RPH's credentials? ▼
Wai Yee Chan, RPH's NPI is 1508167883 with credentials RPH. 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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.