NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1821038407 MD
Verify on CMS → James Lewis, MD
Internal Medicine Physician in Olive Branch, Mississippi.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal Medicine Physician, 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
511
Medicare Part D claims · 207 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
93.1/100
▲ 10 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
James Lewis, MD reported a CMS MIPS final score of 93.1/100 - above the 83.1 national average - and filed 511 Medicare Part D claims in 2023.
- 93.1/100
- MIPS score · +10 vs avg
- 511
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
James Lewis, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
93 Top 29% higher than 71% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where James Lewis, MD sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, James Lewis, MD writes more Part D claims than 44% of them and scores higher on MIPS quality than 72% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is James Lewis, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
James Lewis, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James Lewis, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
511 81% vs specialty avg
MIPS final score
93.1/100 10 pts vs avg
Specialty distribution in Mississippi
How Internal Medicine Physician compares to other specialties among Mississippi providers
Medicare quality performance, MIPS
James Lewis, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 93.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 93.1/100 vs national avg 83.1
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).
James Lewis, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 4250 BETHEL RD, Olive Branch, MS, 38654, with a listed phone of (901) 516-1290. NPI 1821038407 was issued on 06/08/2006.
Medicare Part D records for calendar year 2023 show 511 prescription claims written by this provider, covering 207 Medicare beneficiaries and totaling roughly $87K in drug spend, with an opioid prescribing rate of 3.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.1/100 for the 2023 performance year (Quality 83.1), compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1821038407 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/08/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
93.1001
Final Score
Avg: 83.1
83.0821
Quality
88
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where James Lewis, MD 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.
Methodist Inpatient Physicians LLC
Olive Branch, MS
Relias Hospitalist Medicine Specialists OF Amory LLC
Amory, MS
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
511
Total Claims
$87K
Total Drug Cost
207
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 535
- Total Day Supply
- 9,748
- Generic Drug Cost
- $52K
- Opioid Claims
- 18 (3.5% rate)
- Antibiotic Claims
- 177
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 2.36
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 34, 65-74: 81, 75-84: 68, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What James Lewis, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
44 claims
- Atorvastatin Calcium
Atorvastatin Calcium
25 claims
- Cefdinir
Cefdinir
25 claims
- Doxycycline Hyclate
Doxycycline Hyclate
25 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
23 claims
- Ampicillin Sodium 17
Ampicillin Sodium
17 claims
- Eliquis 17
Eliquis
17 claims
- Furosemide 16
Furosemide
16 claims
| Drug | Claims |
|---|---|
| Prednisone | 44 |
| Atorvastatin Calcium | 25 |
| Cefdinir | 25 |
| Doxycycline Hyclate | 25 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 23 |
| Ampicillin Sodium | 17 |
| Eliquis Apixaban | 17 |
| Furosemide | 16 |
| Levofloxacin | 16 |
| Ceftriaxone Ceftriaxone Sodium | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How James Lewis, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
James Lewis, MD's 511 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Mississippi
Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as Lewis.
Dr. Aja Abai
M.D.
McComb, MS
Dr. Elias Abboud
MD
Lexington, MS
Dr. Mohamed Abdel Latif
MD
Columbus, MS
Dr. Ashraf Abdo
MD
Jackson, MS
John Abernathy
Jackson, MS
Compare Internal Medicine Physician 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 Mississippi medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine Physician 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
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Explore Mississippi
Frequently Asked Questions
What is James Lewis, MD's specialty? ▼
James Lewis, MD specializes in Internal Medicine Physician and practices in Olive Branch, Mississippi. Credentials: MD.
How much does James Lewis, MD prescribe under Medicare Part D? ▼
In 2023, James Lewis, MD wrote 511 Medicare Part D claims totaling $87K in drug costs for 207 beneficiaries.
What is James Lewis, MD's Medicare quality score? ▼
James Lewis, MD has a CMS MIPS Final Score of 93.1/100 (Quality: 83.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is James Lewis, MD located? ▼
James Lewis, MD is located at 4250 BETHEL RD, Olive Branch, MS, 38654. Phone: (901) 516-1290.
What is James Lewis, MD's NPI number? ▼
James Lewis, MD's National Provider Identifier (NPI) is 1821038407, issued on 06/08/2006.
Does James Lewis, MD prescribe opioids? ▼
Yes, James Lewis, MD had 18 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does James Lewis, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, James Lewis, MD's most frequently prescribed drugs include Prednisone, Atorvastatin Calcium, Cefdinir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Lewis, MD accept Medicare? ▼
James Lewis, MD appears in CMS Medicare data with 511 Part D claims and 207 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Lewis, MD's credentials? ▼
James Lewis, MD's NPI is 1821038407 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.