NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1891726972 PA-C, MS, MPH
Verify on CMS → Heather Lesieur, PA-C, MS, MPH
Physician Assistant in Clayton, 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
2K
Medicare Part D claims · 247 beneficiaries · Physician Assistant avg: 790
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$214.89
9 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Heather Lesieur, PA-C, MS, MPH filed 1,778 Medicare Part D claims in 2023 as a Physician Assistant in Clayton, California, prescribing 91% generic.
- 2K
- Part D claims, 2023
- 91%
- generic prescribing
- $214.89
- industry payments (Sunshine Act)
- ≥83rd
- 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.
CMS NPPES provider registry desk
NPI 1891726972 · Physician Assistant
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1891726972
- ENUM-LEGACY 2006
- TAX-MEGA 151K Physician Assistant
- RX-MID 1,778
- BOOK-MID 13,402 in California
- PHOTO-ENUM Helen Puffenberger · 2006
Heather Lesieur, PA-C, MS, MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,778 ≥ 83rd percentile 83% 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 Heather Lesieur, PA-C, MS, MPH?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,778 125% 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).
Practice Address
Provider Details
| NPI | 1891726972 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C, MS, MPH |
| Gender | Female |
| NPI Issued | 07/06/2006 |
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 Heather Lesieur, PA-C, MS, MPH. Source: openpaymentsdata.cms.gov.
Total received
$215
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.
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 Heather Lesieur, PA-C, MS, MPH. To verify Heather Lesieur, PA-C, MS, MPH'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
Heather Lesieur, PA-C, MS, MPH - brand share 8.0%
Physician Assistant average
8% brand-name claims vs 91% generic, on 1,778 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.
1,778
Total Claims
$121K
Total Drug Cost
247
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,856
- Total Day Supply
- 110,694
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $70K
- Generic Drug Cost
- $51K
- Opioid Claims
- 24 (1.3% rate)
- Antibiotic Claims
- 55
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 0.87
- 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 Heather Lesieur, PA-C, MS, MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
90 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
70 claims
- Amlodipine Besylate
Amlodipine Besylate
60 claims
- Lisinopril
Lisinopril
57 claims
- Escitalopram Oxalate
Escitalopram Oxalate
54 claims
- Montelukast Sodium
Montelukast Sodium
52 claims
- Simvastatin
Simvastatin
51 claims
- Trazodone Hcl
Trazodone Hcl
50 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 90 |
| Rosuvastatin Calcium | 70 |
| Amlodipine Besylate | 60 |
| Lisinopril | 57 |
| Escitalopram Oxalate | 54 |
| Montelukast Sodium | 52 |
| Simvastatin | 51 |
| Trazodone Hcl | 50 |
| Atorvastatin Calcium | 48 |
| Losartan Potassium | 44 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Heather Lesieur, PA-C, MS, MPH fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Heather Lesieur, PA-C, MS, MPH's 1,778 claims are above the specialty average of 790.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Lesieur, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lesieur.
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 →
Frequently Asked Questions
What is Heather Lesieur, PA-C, MS, MPH's specialty? ▼
Heather Lesieur, PA-C, MS, MPH specializes in Physician Assistant and practices in Clayton, California. Credentials: PA-C, MS, MPH.
How much does Heather Lesieur, PA-C, MS, MPH prescribe under Medicare Part D? ▼
In 2023, Heather Lesieur, PA-C, MS, MPH wrote 1,778 Medicare Part D claims totaling $121K in drug costs for 247 beneficiaries.
Where is Heather Lesieur, PA-C, MS, MPH located? ▼
Heather Lesieur, PA-C, MS, MPH is located at 5439 CLAYTON RD STE B, Clayton, CA, 94517. Phone: (925) 672-6744.
What is Heather Lesieur, PA-C, MS, MPH's NPI number? ▼
Heather Lesieur, PA-C, MS, MPH's National Provider Identifier (NPI) is 1891726972, issued on 07/06/2006.
Does Heather Lesieur, PA-C, MS, MPH prescribe more brand-name or generic drugs? ▼
Heather Lesieur, PA-C, MS, MPH's prescribing is 8% brand-name and 91% generic drugs by claim count, with $70K in brand drug costs.
Does Heather Lesieur, PA-C, MS, MPH prescribe opioids? ▼
Yes, Heather Lesieur, PA-C, MS, MPH had 24 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
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 Heather Lesieur, PA-C, MS, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Heather Lesieur, PA-C, MS, MPH's most frequently prescribed drugs include Levothyroxine Sodium, Rosuvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heather Lesieur, PA-C, MS, MPH accept Medicare? ▼
Heather Lesieur, PA-C, MS, MPH appears in CMS Medicare data with 1,778 Part D claims and 247 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heather Lesieur, PA-C, MS, MPH's credentials? ▼
Heather Lesieur, PA-C, MS, MPH's NPI is 1891726972 with credentials PA-C, MS, MPH. 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.