NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1336782903 PA
Verify on CMS → Lawrence Lam, PA
Physician Assistant in San Francisco, 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 150,974 in Physician Assistant, 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
763
Medicare Part D claims · 255 beneficiaries · Physician Assistant avg: 790
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Lawrence Lam, PA filed 763 Medicare Part D claims in 2023 as a Physician Assistant in San Francisco, California, prescribing 95% generic.
- 763
- Part D claims, 2023
- 95%
- generic prescribing
- ≥71st
- 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.
Lawrence Lam, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
763 ≥ 71st percentile 71% of 1,370,886 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 · 2023
What does the federal data show about Lawrence Lam, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
763 3% vs specialty avg
Specialty distribution in California
How Physician Assistant 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 Physician Assistant. 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).
Lawrence Lam, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 1600 DIVISADERO ST, San Francisco, CA, 94143, with a listed phone of (415) 353-7566. NPI 1336782903 was issued on 10/25/2019.
Medicare Part D records for calendar year 2023 show 763 prescription claims written by this provider, covering 255 Medicare beneficiaries and totaling roughly $78K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 28.6%.
Physician Assistant is a high-volume specialty nationwide, with 150,974 enrolled providers across 56 states and an average of 790 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 | 1336782903 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Male |
| NPI Issued | 10/25/2019 |
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 Lawrence Lam, PA. To verify Lawrence Lam, PA'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
Lawrence Lam, PA - brand share 5.0%
Physician Assistant average
5% brand-name claims vs 95% generic, on 763 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.
763
Total Claims
$78K
Total Drug Cost
255
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 774
- Total Day Supply
- 9,870
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $27K
- Generic Drug Cost
- $50K
- Opioid Claims
- 218 (28.6% rate)
- Antibiotic Claims
- 155
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Lawrence Lam, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
171 claims
- Gabapentin
Gabapentin
79 claims
- Naloxone Hcl
Naloxone Hcl
76 claims
- Meloxicam
Meloxicam
69 claims
- Lansoprazole 49
Lansoprazole
49 claims
- Ceftriaxone 39
Ceftriaxone
39 claims
- Ondansetron Hcl 30
Ondansetron Hcl
30 claims
- Vancomycin Hcl 29
Vancomycin Hcl
29 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 171 |
| Gabapentin | 79 |
| Naloxone Hcl | 76 |
| Meloxicam | 69 |
| Lansoprazole | 49 |
| Ceftriaxone Ceftriaxone Sodium | 39 |
| Ondansetron Hcl | 30 |
| Vancomycin Hcl | 29 |
| Enoxaparin Sodium | 27 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Lawrence Lam, PA fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Lawrence Lam, PA's 763 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lam.
One of 13,402 Physician Assistant providers enrolled in California, 5 are shown here.
Dr. Marcia -Galbraith
PA
Stockton, CA
Dr. Danny Abad
PA
Orange, CA
Dr. Lea Dominique Abadies
PA
Tustin, CA
Dr. Rea Elizabeth Abaniel
P.A.-C
Seal Beach, CA
Dr. Ramina Abbasi
PA-C
Signal Hill, CA
Compare Physician Assistant 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 Physician Assistant 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 Lawrence Lam, PA's specialty? ▼
Lawrence Lam, PA specializes in Physician Assistant and practices in San Francisco, California. Credentials: PA.
How much does Lawrence Lam, PA prescribe under Medicare Part D? ▼
In 2023, Lawrence Lam, PA wrote 763 Medicare Part D claims totaling $78K in drug costs for 255 beneficiaries.
Where is Lawrence Lam, PA located? ▼
Lawrence Lam, PA is located at 1600 DIVISADERO ST, San Francisco, CA, 94143. Phone: (415) 353-7566.
What is Lawrence Lam, PA's NPI number? ▼
Lawrence Lam, PA's National Provider Identifier (NPI) is 1336782903, issued on 10/25/2019.
Does Lawrence Lam, PA prescribe more brand-name or generic drugs? ▼
Lawrence Lam, PA's prescribing is 5% brand-name and 95% generic drugs by claim count, with $27K in brand drug costs.
Does Lawrence Lam, PA prescribe opioids? ▼
Yes, Lawrence Lam, PA had 218 opioid claims in 2023 with an opioid prescribing rate of 28.6%.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Lawrence Lam, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Lawrence Lam, PA's most frequently prescribed drugs include Oxycodone Hcl, Gabapentin, Naloxone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lawrence Lam, PA accept Medicare? ▼
Lawrence Lam, PA appears in CMS Medicare data with 763 Part D claims and 255 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lawrence Lam, PA's credentials? ▼
Lawrence Lam, PA's NPI is 1336782903 with credentials PA. 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
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.