NPI registry status
Active
2026 NPPES data Oncology Pharmacist NPI 1497814370 PHARMD
Verify on CMS → Sin Lam, PHARMD
Oncology Pharmacist in Antioch, 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 1,720 in Oncology 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
2K
Medicare Part D claims · 386 beneficiaries · Oncology Pharmacist avg: 160
Generic prescribing
52%
generic claims · 48% 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
Sin Lam, PHARMD filed 2,018 Medicare Part D claims in 2023 as a Oncology Pharmacist in Antioch, California, prescribing 52% generic.
- 2K
- Part D claims, 2023
- 52%
- 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.
Sin Lam, PHARMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,018 Top 16% higher than 84% 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 Sin Lam, PHARMD?
Quality data not reportedPrimary specialty
Oncology Pharmacist
Medicare Part D claims
2,018 13× vs specialty avg
Specialty distribution in California
How Oncology 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 Oncology 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).
Sin Lam, PHARMD appears in the CMS NPPES registry as an Oncology Pharmacist provider holding PHARMD credentials at 4501 SAND CREEK RD, Antioch, CA, 94531, with a listed phone of (925) 813-3959. NPI 1497814370 was issued on 12/07/2006.
Medicare Part D records for calendar year 2023 show 2,018 prescription claims written by this provider, covering 386 Medicare beneficiaries and totaling roughly $13.2 million in drug spend, split 48% brand-name and 52% generic by claim count.
Oncology Pharmacist is a narrow specialty nationwide, with 1,720 enrolled providers across 50 states and an average of 160 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 | 1497814370 |
|---|---|
| Specialty | Oncology Pharmacist |
| Credentials | PHARMD |
| Gender | Female |
| NPI Issued | 12/07/2006 |
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 Sin Lam, PHARMD. To verify Sin Lam, PHARMD'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 · Above average
Sin Lam, PHARMD - brand share 48.0%
Oncology Pharmacist average
48% brand-name claims vs 52% generic, on 2,018 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.
2,018
Total Claims
$13.2M
Total Drug Cost
386
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,742
- Total Day Supply
- 78,665
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $13.0M
- Generic Drug Cost
- $196K
Patient Demographics
- Average Patient Age
- 75.4 years
- Avg HCC Risk Score
- 2.76
- Gender Split
- 42% female / 58% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sin Lam, PHARMD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Abiraterone Acetate
Abiraterone Acetate
521 claims
- Brukinsa 167
Brukinsa
167 claims
- Prednisone 151
Prednisone
151 claims
- Tagrisso 135
Tagrisso
135 claims
- Ibrance 132
Ibrance
132 claims
- Imatinib Mesylate 123
Imatinib Mesylate
123 claims
- Calquence 93
Calquence
93 claims
- Lynparza 57
Lynparza
57 claims
| Drug | Claims |
|---|---|
| Abiraterone Acetate | 521 |
| Brukinsa Zanubrutinib | 167 |
| Prednisone | 151 |
| Tagrisso Osimertinib Mesylate | 135 |
| Ibrance Palbociclib | 132 |
| Imatinib Mesylate | 123 |
| Calquence Acalabrutinib Maleate | 93 |
| Lynparza Olaparib | 57 |
| Imbruvica Ibrutinib | 44 |
| Sprycel Dasatinib | 41 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Oncology Pharmacist Overview
How Sin Lam, PHARMD fits within the Oncology Pharmacist landscape nationally.
1,720
Oncology Pharmacist Providers in US
50
States with Oncology Pharmacist
160
Avg Claims per Provider
Sin Lam, PHARMD's 2,018 claims are above the specialty average of 160.
Nearby Oncology Pharmacist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lam.
Dr. Jayrom Acorda
PHARM.D.
Palm Springs, CA
Dr. Antonio Acuna
PHARMD
San Diego, CA
Dr. Leena Agrawal
PHARMD
Santa Rosa, CA
Dr. Artemio Alanis
PHARMD
Fairfield, CA
Dr. Maher Alhaja
PHARMD
San Diego, CA
Compare Oncology 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 Oncology 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.
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Frequently Asked Questions
What is Sin Lam, PHARMD's specialty? ▼
Sin Lam, PHARMD specializes in Oncology Pharmacist and practices in Antioch, California. Credentials: PHARMD.
How much does Sin Lam, PHARMD prescribe under Medicare Part D? ▼
In 2023, Sin Lam, PHARMD wrote 2,018 Medicare Part D claims totaling $13.2M in drug costs for 386 beneficiaries.
Where is Sin Lam, PHARMD located? ▼
Sin Lam, PHARMD is located at 4501 SAND CREEK RD, Antioch, CA, 94531. Phone: (925) 813-3959.
What is Sin Lam, PHARMD's NPI number? ▼
Sin Lam, PHARMD's National Provider Identifier (NPI) is 1497814370, issued on 12/07/2006.
Does Sin Lam, PHARMD prescribe more brand-name or generic drugs? ▼
Sin Lam, PHARMD's prescribing is 48% brand-name and 52% generic drugs by claim count, with $13.0M in brand drug costs.
How many Oncology Pharmacist providers are there in the US? ▼
There are 1,720 Oncology Pharmacist providers across 50 states in the US. The average Oncology Pharmacist provider writes 160 Medicare Part D claims per year.
What drugs does Sin Lam, PHARMD prescribe most often? ▼
Based on 2023 Medicare Part D data, Sin Lam, PHARMD's most frequently prescribed drugs include Abiraterone Acetate, Brukinsa, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sin Lam, PHARMD accept Medicare? ▼
Sin Lam, PHARMD appears in CMS Medicare data with 2,018 Part D claims and 386 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sin Lam, PHARMD's credentials? ▼
Sin Lam, PHARMD's NPI is 1497814370 with credentials PHARMD. 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.