NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1588642326 M.D.
Verify on CMS → Luis Casas, M.D.
Internal Medicine Physician in Laurel, Maryland.
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
1K
Medicare Part D claims · 156 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
92.2/100
▲ 9 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Luis Casas, M.D. reported a CMS MIPS final score of 92.2/100 - above the 83.1 national average - and filed 1,349 Medicare Part D claims in 2023.
- 92.2/100
- MIPS score · +9 vs avg
- 1K
- 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.
Luis Casas, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 32% higher than 68% 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 Luis Casas, M.D. 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, Luis Casas, M.D. writes more Part D claims than 60% of them and scores higher on MIPS quality than 67% - placing this provider in the high-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 Luis Casas, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Luis Casas, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Luis Casas, M.D.?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
1,349 50% vs specialty avg
MIPS final score
92.2/100 9.1 pts vs avg
Specialty distribution in Maryland
How Internal Medicine Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Luis Casas, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 92.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 92.2/100 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).
Luis Casas, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at 8317 CHERRY LN, Laurel, MD, 20707, with a listed phone of (301) 776-0070. NPI 1588642326 was issued on 01/03/2006.
Medicare Part D records for calendar year 2023 show 1,349 prescription claims written by this provider, covering 156 Medicare beneficiaries and totaling roughly $67K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.2/100 for the 2023 performance year (Quality 95.9, Cost 79.5), 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 | 1588642326 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 01/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
92.2345
Final Score
Avg: 83.1
95.9493
Quality
79.516
Cost
Reporting: Individual
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,349
Total Claims
$67K
Total Drug Cost
156
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,625
- Total Day Supply
- 108,201
- Generic Drug Cost
- $31K
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 79.3 years
- Avg HCC Risk Score
- 1.07
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Luis Casas, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
165 claims
- Losartan Potassium
Losartan Potassium
98 claims
- Amlodipine Besylate
Amlodipine Besylate
96 claims
- Levothyroxine Sodium
Levothyroxine Sodium
71 claims
- Rosuvastatin Calcium 59
Rosuvastatin Calcium
59 claims
- Lisinopril 52
Lisinopril
52 claims
- Hydrochlorothiazide 51
Hydrochlorothiazide
51 claims
- Pravastatin Sodium 47
Pravastatin Sodium
47 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 165 |
| Losartan Potassium | 98 |
| Amlodipine Besylate | 96 |
| Levothyroxine Sodium | 71 |
| Rosuvastatin Calcium | 59 |
| Lisinopril | 52 |
| Hydrochlorothiazide | 51 |
| Pravastatin Sodium | 47 |
| Sertraline Hcl | 44 |
| Pantoprazole Sodium | 36 |
* 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 Luis Casas, M.D. 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
Luis Casas, M.D.'s 1,349 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Casas.
Dr. Joshua Aaron
MD
Elkton, MD
Dr. Alina Aasim
M.D.
Baltimore, MD
Dr. Eduardo Abarca Rojas
M.D.
Parkville, MD
Dr. Rasheed Abassi
M.D.
Clinton, MD
Dr. Shastine Abate
MD
Baltimore, MD
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 Maryland 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.
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Frequently Asked Questions
What is Luis Casas, M.D.'s specialty? ▼
Luis Casas, M.D. specializes in Internal Medicine Physician and practices in Laurel, Maryland. Credentials: M.D..
How much does Luis Casas, M.D. prescribe under Medicare Part D? ▼
In 2023, Luis Casas, M.D. wrote 1,349 Medicare Part D claims totaling $67K in drug costs for 156 beneficiaries.
What is Luis Casas, M.D.'s Medicare quality score? ▼
Luis Casas, M.D. has a CMS MIPS Final Score of 92.2/100 (Quality: 95.9, Cost: 79.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Luis Casas, M.D. located? ▼
Luis Casas, M.D. is located at 8317 CHERRY LN, Laurel, MD, 20707. Phone: (301) 776-0070.
What is Luis Casas, M.D.'s NPI number? ▼
Luis Casas, M.D.'s National Provider Identifier (NPI) is 1588642326, issued on 01/03/2006.
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 Luis Casas, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Luis Casas, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Luis Casas, M.D. accept Medicare? ▼
Luis Casas, M.D. appears in CMS Medicare data with 1,349 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 Luis Casas, M.D.'s credentials? ▼
Luis Casas, M.D.'s NPI is 1588642326 with credentials M.D.. 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.