NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1023370871 MD
Verify on CMS → Thomas Tsai, MD
Internal Medicine Physician in Las Vegas, Nevada.
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
11
Medicare Part D claims · Internal Medicine Physician avg: 3K
MIPS score
74.6/100
▼ 9 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Tsai, MD reported a CMS MIPS final score of 74.6/100 - below the 83.1 national average - and filed 11 Medicare Part D claims in 2023.
- 74.6/100
- MIPS score · -9 vs avg
- 11
- 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.
Thomas Tsai, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 12th percentile higher than 12% 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 Thomas Tsai, 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, Thomas Tsai, MD writes more Part D claims than 0% of them and scores higher on MIPS quality than 14% - placing this provider in the lower-volume, lower-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 Thomas Tsai, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Thomas Tsai, MD 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 Thomas Tsai, MD?
Below national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
11 100% vs specialty avg
MIPS final score
74.6/100 8.5 pts vs avg
Specialty distribution in Nevada
How Internal Medicine Physician compares to other specialties among Nevada providers
Medicare quality performance, MIPS
Thomas Tsai, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 74.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 74.6/100 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).
Thomas Tsai, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 1701 W CHARLESTON BLVD STE 230, Las Vegas, NV, 89102, with a listed phone of (702) 671-2345. NPI 1023370871 was issued on 06/07/2012.
Medicare Part D records for calendar year 2023 show 11 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $471 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.6/100 for the 2023 performance year (Quality 56.1, Cost 59.2), 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 | 1023370871 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/07/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.5984
Final Score
Avg: 83.1
56.1252
Quality
59.2027
Cost
100
Promoting Interoperability
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
11
Total Claims
$471
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11
- Total Day Supply
- 320
Patient Demographics
- Average Patient Age
- 65.6 years
- Avg HCC Risk Score
- 4.32
Internal Medicine Physician Overview
How Thomas Tsai, 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
Thomas Tsai, MD's 11 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Nevada
Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as Tsai.
Dr. Cherylene Abalos
D.O.
Nellis Afb, NV
Dr. Kasey Abanonu
MD
Las Vegas, NV
Dr. Sherif Abdou
M.D.
Las Vegas, NV
Dr. Ijaz Abid
MD
North Las Vegas, NV
Dr. Nael Aboul-Hosn
D.O.
Carson City, NV
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 Nevada 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
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Nevada
Frequently Asked Questions
What is Thomas Tsai, MD's specialty? ▼
Thomas Tsai, MD specializes in Internal Medicine Physician and practices in Las Vegas, Nevada. Credentials: MD.
How much does Thomas Tsai, MD prescribe under Medicare Part D? ▼
In 2023, Thomas Tsai, MD wrote 11 Medicare Part D claims totaling $471 in drug costs for N/A beneficiaries.
What is Thomas Tsai, MD's Medicare quality score? ▼
Thomas Tsai, MD has a CMS MIPS Final Score of 74.6/100 (Quality: 56.1, Cost: 59.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Thomas Tsai, MD located? ▼
Thomas Tsai, MD is located at 1701 W CHARLESTON BLVD STE 230, Las Vegas, NV, 89102. Phone: (702) 671-2345.
What is Thomas Tsai, MD's NPI number? ▼
Thomas Tsai, MD's National Provider Identifier (NPI) is 1023370871, issued on 06/07/2012.
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.
Does Thomas Tsai, MD accept Medicare? ▼
Thomas Tsai, MD appears in CMS Medicare data with 11 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Tsai, MD's credentials? ▼
Thomas Tsai, MD's NPI is 1023370871 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.