NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1841281177 MD
Verify on CMS → Mario Ruiz, MD
Nephrology Physician in Denton, 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 10,569 in Nephrology 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
597
Medicare Part D claims · 247 beneficiaries · Nephrology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mario Ruiz, MD filed 597 Medicare Part D claims in 2023 as a Nephrology Physician in Denton, Texas.
- 597
- 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.
Mario Ruiz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
597 Top 34% higher than 66% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Mario Ruiz, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 5 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 Mario Ruiz, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
597 59% vs specialty avg
Specialty distribution in Texas
How Nephrology Physician compares to other specialties among Texas 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 Nephrology Physician. 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).
Mario Ruiz, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 3315 COLORADO BLVD, Denton, TX, 76210, with a listed phone of (940) 320-1708. NPI 1841281177 was issued on 11/04/2005.
Medicare Part D records for calendar year 2023 show 597 prescription claims written by this provider, covering 247 Medicare beneficiaries and totaling roughly $30K in drug spend.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 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 | 1841281177 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/04/2005 |
Hospital and facility affiliations
Facilities where Mario Ruiz, 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.
According to CMS billing records, Mario Ruiz, MD is affiliated with 5 Medicare-billing facilities across 5 states.
Emerus Inpatient Providers SC
Menomonee Falls, WI
Emerus Nevada Inpatient Providers PLLC
North Las Vegas, NV
Emerus Oklahoma Hospitalists PLLC
Oklahoma City, OK
Emerus Pennsylvania Inpatient Providers PLLC
West Grove, PA
Leading Edge Emergency Physicians, Inc
San Antonio, 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).
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 Mario Ruiz, MD. To verify Mario Ruiz, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
597
Total Claims
$30K
Total Drug Cost
247
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 694
- Total Day Supply
- 13,068
- Generic Drug Cost
- $11K
- Antibiotic Claims
- 198
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.86
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 40, 65-74: 98, 75-84: 70, 85+: 39
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mario Ruiz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
43 claims
- Azithromycin
Azithromycin
39 claims
- Cefuroxime
Cefuroxime
36 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
28 claims
- Doxycycline Hyclate
Doxycycline Hyclate
24 claims
- Levofloxacin
Levofloxacin
22 claims
- Pantoprazole Sodium
Pantoprazole Sodium
19 claims
- Famotidine 17
Famotidine
17 claims
| Drug | Claims |
|---|---|
| Prednisone | 43 |
| Azithromycin | 39 |
| Cefuroxime Cefuroxime Axetil | 36 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 28 |
| Doxycycline Hyclate | 24 |
| Levofloxacin | 22 |
| Pantoprazole Sodium | 19 |
| Famotidine | 17 |
| Furosemide | 17 |
| Amlodipine Besylate | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Mario Ruiz, MD fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Mario Ruiz, MD's 597 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Ruiz.
Dr. Bernardino Abaya
M.D.
Houston, TX
Dr. Aisha Abbasi
MD
Conroe, TX
Dr. Fadi Abouzahr
MD
San Antonio, TX
Dr. Koshy Abraham
MD
Fort Worth, TX
Dr. Ala Abudayyeh
MD
Houston, TX
Compare Nephrology 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 Nephrology 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 Mario Ruiz, MD's specialty? ▼
Mario Ruiz, MD specializes in Nephrology Physician and practices in Denton, Texas. Credentials: MD.
How much does Mario Ruiz, MD prescribe under Medicare Part D? ▼
In 2023, Mario Ruiz, MD wrote 597 Medicare Part D claims totaling $30K in drug costs for 247 beneficiaries.
Where is Mario Ruiz, MD located? ▼
Mario Ruiz, MD is located at 3315 COLORADO BLVD, Denton, TX, 76210. Phone: (940) 320-1708.
What is Mario Ruiz, MD's NPI number? ▼
Mario Ruiz, MD's National Provider Identifier (NPI) is 1841281177, issued on 11/04/2005.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Mario Ruiz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mario Ruiz, MD's most frequently prescribed drugs include Prednisone, Azithromycin, Cefuroxime. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mario Ruiz, MD accept Medicare? ▼
Mario Ruiz, MD appears in CMS Medicare data with 597 Part D claims and 247 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mario Ruiz, MD's credentials? ▼
Mario Ruiz, MD's NPI is 1841281177 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.
- 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.