NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1821018516 PA
Verify on CMS → Stephanie Lewis, PA
Physician Assistant in Chelmsford, Massachusetts.
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
221
Medicare Part D claims · 156 beneficiaries · Physician Assistant avg: 790
What the federal data shows
Stephanie Lewis, PA filed 221 Medicare Part D claims in 2023 as a Physician Assistant in Chelmsford, Massachusetts.
- 221
- Part D claims, 2023
- ≥49th
- 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 Stephanie Lewis, PA
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 1821018516), first enumerated 07/19/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 221 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Stephanie Lewis, PA's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- 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 1821018516 · Physician Assistant
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1821018516
- ENUM-LEGACY 2006
- TAX-MEGA 151K Physician Assistant
- RX-LIGHT 221
- BOOK-LIGHT 4,313 in Massachusetts
- PHOTO-ENUM Theodore Coates · 2006
Stephanie Lewis, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
221 ≥ 49th percentile 49% 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 Stephanie Lewis, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
221 72% vs specialty avg
Specialty distribution in Massachusetts
How Physician Assistant compares to other specialties among Massachusetts 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 | 1821018516 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 07/19/2006 |
Hospital and facility affiliations
Facilities where Stephanie Lewis, PA bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Atrius Health Inc
Needham, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Stephanie Lewis, PA. To verify Stephanie Lewis, PA's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
221
Total Claims
$6K
Total Drug Cost
156
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 269
- Total Day Supply
- 4,757
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 65
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 1.22
- Gender Split
- 76% female / 24% male
- Age Distribution
- <65: 33, 65-74: 60, 75-84: 47, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephanie Lewis, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Doxycycline Monohy…
Doxycycline Monohydrate
15 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
13 claims
- Prednisone
Prednisone
13 claims
- Fluticasone Propio…
Fluticasone Propionate
12 claims
| Drug | Claims |
|---|---|
| Doxycycline Monohydrate | 15 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 13 |
| Prednisone | 13 |
| Fluticasone Propionate | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Stephanie Lewis, 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
Stephanie Lewis, PA's 221 claims are below the specialty average of 790.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Lewis, both outside Massachusetts 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 Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Lewis.
One of 4,313 Physician Assistant providers enrolled in Massachusetts, 5 are shown here.
Dr. Erin Abdallah
PA-C
Swansea, MA
Dr. Alexa Aboshar
PA-C
Tewksbury, MA
Dr. Bhraana Abraham
PA
Boston, MA
Dr. Keidelyn Abreu
PA
Lawrence, MA
Dr. Cheryl Acampora
PA
South Weymouth, MA
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephanie Lewis, PA's specialty? ▼
Stephanie Lewis, PA specializes in Physician Assistant and practices in Chelmsford, Massachusetts. Credentials: PA.
How much does Stephanie Lewis, PA prescribe under Medicare Part D? ▼
In 2023, Stephanie Lewis, PA wrote 221 Medicare Part D claims totaling $6K in drug costs for 156 beneficiaries.
Where is Stephanie Lewis, PA located? ▼
Stephanie Lewis, PA is located at 228 BILLERICA RD, Chelmsford, MA, 01824. Phone: (978) 250-6100.
What is Stephanie Lewis, PA's NPI number? ▼
Stephanie Lewis, PA's National Provider Identifier (NPI) is 1821018516, issued on 07/19/2006.
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 Stephanie Lewis, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephanie Lewis, PA's most frequently prescribed drugs include Doxycycline Monohydrate, Amoxicillin-Clavulanate Potass, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephanie Lewis, PA accept Medicare? ▼
Stephanie Lewis, PA appears in CMS Medicare data with 221 Part D claims and 156 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephanie Lewis, PA's credentials? ▼
Stephanie Lewis, PA's NPI is 1821018516 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.