NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1346462660 MD
Verify on CMS → Amarbir Mattewal, MD
Internal Medicine Physician in The Woodlands, Texas.
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
3K
Medicare Part D claims · 515 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
0%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
86.7/100
▲ 3 pts above national avg 83.5 · Above neutral
Industry payments
$2.7K
93 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Amarbir Mattewal, MD reported a CMS MIPS final score of 86.7/100 - above the 83.5 national average - and filed 3,100 Medicare Part D claims in 2023.
- 86.7/100
- MIPS score · +3 vs avg
- 3K
- Part D claims, 2023
- 0%
- generic prescribing
- 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.
Amarbir Mattewal, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
87 ≥ 49th percentile 49% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Amarbir Mattewal, MD sits
This provider among internal medicine physician peers
Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Amarbir Mattewal, MD writes more Part D claims than 73% of them and scores higher on MIPS quality than 50% - 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 Amarbir Mattewal, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Amarbir Mattewal, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Amarbir Mattewal, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
3,100 14% vs specialty avg
MIPS final score
86.7/100 3.2 pts vs avg
Specialty distribution in Texas
How Internal Medicine Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Amarbir Mattewal, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 86.7/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 86.7/100 vs national avg 83.5
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).
Amarbir Mattewal, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 1111 MEDICAL PLAZA DR, The Woodlands, TX, 77380, with a listed phone of (281) 296-8788. NPI 1346462660 was issued on 05/03/2007.
Medicare Part D records for calendar year 2023 show 3,100 prescription claims written by this provider, covering 515 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 56% brand-name and 0% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.7/100 for the 2023 performance year (Quality 98.4, Cost 41.3), compared with the 83.5 average among clinicians with a measured score.
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 | 1346462660 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/03/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.6624
Final Score
Measured-score avg: 83.5
98.3567
Quality
41.3077
Cost
100
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Amarbir Mattewal, 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.
Privia Medical Group Gulf Coast PLLC
The Woodlands, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Amarbir Mattewal, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.7K
Largest payer
Medtronic, Inc.
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 - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Amarbir Mattewal, MD. To verify Amarbir Mattewal, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Amarbir Mattewal, MD - brand share 56.0%
Internal Medicine Physician average
56% brand-name claims vs 0% generic, on 3,100 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.
3,100
Total Claims
$1.8M
Total Drug Cost
515
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,093
- Total Day Supply
- 113,221
- Brand vs Generic
- 56% brand / 0% generic
- Brand Drug Cost
- $1.8M
- Antibiotic Claims
- 138
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 2.15
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 29, 65-74: 227, 75-84: 203, 85+: 56
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Amarbir Mattewal, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
457 claims
- Montelukast Sodium
Montelukast Sodium
429 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
334 claims
- Breo Ellipta
Breo Ellipta
258 claims
- Prednisone
Prednisone
227 claims
- Symbicort 135
Symbicort
135 claims
- Anoro Ellipta 111
Anoro Ellipta
111 claims
- Spiriva Respimat 78
Spiriva Respimat
78 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 457 |
| Montelukast Sodium | 429 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 334 |
| Breo Ellipta Fluticasone/Vilanterol | 258 |
| Prednisone | 227 |
| Symbicort Budesonide/Formoterol Fumarate | 135 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 111 |
| Spiriva Respimat Tiotropium Bromide | 78 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 75 |
| Azithromycin | 65 |
* 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 Amarbir Mattewal, 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
Amarbir Mattewal, MD's 3,100 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Mattewal.
Dr. Muhammad A. Sattar
MD
Dallas, TX
Anunaya Aashish
Denton, TX
Dr. Queenie Ann Abad
M.D.
San Antonio, TX
Dr. Fuad Abaleka
M.D
Lubbock, TX
Dr. Carol Abalihi
M.D.
El Paso, TX
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 Texas 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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 Texas
Frequently Asked Questions
What is Amarbir Mattewal, MD's specialty? ▼
Amarbir Mattewal, MD specializes in Internal Medicine Physician and practices in The Woodlands, Texas. Credentials: MD.
How much does Amarbir Mattewal, MD prescribe under Medicare Part D? ▼
In 2023, Amarbir Mattewal, MD wrote 3,100 Medicare Part D claims totaling $1.8M in drug costs for 515 beneficiaries.
What is Amarbir Mattewal, MD's Medicare quality score? ▼
Amarbir Mattewal, MD has a CMS MIPS Final Score of 86.7/100 (Quality: 98.4, Cost: 41.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Amarbir Mattewal, MD located? ▼
Amarbir Mattewal, MD is located at 1111 MEDICAL PLAZA DR, The Woodlands, TX, 77380. Phone: (281) 296-8788.
What is Amarbir Mattewal, MD's NPI number? ▼
Amarbir Mattewal, MD's National Provider Identifier (NPI) is 1346462660, issued on 05/03/2007.
Does Amarbir Mattewal, MD prescribe more brand-name or generic drugs? ▼
Amarbir Mattewal, MD's prescribing is 56% brand-name and 0% generic drugs by claim count, with $1.8M in brand drug costs.
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 Amarbir Mattewal, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Amarbir Mattewal, MD's most frequently prescribed drugs include Trelegy Ellipta, Montelukast Sodium, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amarbir Mattewal, MD accept Medicare? ▼
Amarbir Mattewal, MD appears in CMS Medicare data with 3,100 Part D claims and 515 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amarbir Mattewal, MD's credentials? ▼
Amarbir Mattewal, MD's NPI is 1346462660 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
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.