MARIO A RUIZ MD
NPI 1841281177
Internal Medicine - Nephrology in Denton, TX
About Mario A Ruiz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIO A RUIZ MD (NPI 1841281177) is an individual nephrology provider in Denton, Texas, licensed in Texas (K2993) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Saint Rose Dominican Hospitals - North Las Vegas, and is a graduate of University Of California, San Diego School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mario A Ruiz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show Mario Ruiz reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dallas, TX 75230
- Reassigned Medicare billing, Texas enrollment
- 486 clinicians in this Medicare group
Dallas, TX 75246
- Reassigned Medicare billing, Texas enrollment
- 1,044 clinicians in this Medicare group
Oklahoma City, OK 73162
- Reassigned Medicare billing, Oklahoma enrollment
- 30 clinicians in this Medicare group
The Woodlands, TX 77381
- Reassigned Medicare billing, Wisconsin enrollment
- 27 clinicians in this Medicare group
Spring, TX 77381
- Reassigned Medicare billing, Texas enrollment
- 180 clinicians in this Medicare group
San Antonio, TX 78232
- Reassigned Medicare billing, Texas enrollment
- 32 clinicians in this Medicare group
North Las Vegas, NV 89032
- Reassigned Medicare billing, Nevada enrollment
- 33 clinicians in this Medicare group
West Grove, PA 19390
- Reassigned Medicare billing, Pennsylvania enrollment
- 29 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Rose Dominican Hospitals - North Las Vegas
Acute Care Hospitals · North Las Vegas, NVIntegris Community Hospital - Council Crossing
Acute Care Hospitals · Oklahoma City, OKBaylor Emergency Medical Center At Aubrey
Acute Care Hospitals · Aubrey, TXBaptist Neighborhood Hospital Thousand Oaks
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 76210 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENTON, TX 76210
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mario Ruiz's NPI number?
The NPI number for Mario Ruiz is 1841281177. It was assigned to this individual provider in the NPPES registry on November 4, 2005.
Where is Mario Ruiz located?
Mario Ruiz practices at 3315 Colorado Blvd Suite 102, Denton, TX 76210. The listed phone number is (940) 320-1708.
What is Mario Ruiz's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Mario Ruiz enrolled in Medicare?
Yes. Mario Ruiz is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mario Ruiz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mario Ruiz reassigns Medicare benefits to 8 organizations: Questcare Hospitalists PLLC (Dallas, TX), Century Integrated Partners, Inc (Dallas, TX), Emerus Oklahoma Hospitalists PLLC (Oklahoma City, OK), Emerus Inpatient Providers Sc (The Woodlands, TX), 24 Hour Physicians, Inc (Spring, TX) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mario Ruiz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mario Ruiz accept?
Health plans from Blue Cross and Blue Shield of Texas and Molina Healthcare list Mario Ruiz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mario Ruiz affiliated with any hospitals?
According to CMS data, Mario Ruiz is affiliated with Saint Rose Dominican Hospitals - North Las Vegas, Integris Community Hospital - Council Crossing, Baylor Emergency Medical Center At Aubrey and Baptist Neighborhood Hospital Thousand Oaks.
When was this NPI record last updated?
The NPPES record for Mario Ruiz was last updated on December 17, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mario A Ruiz, MD · NPI 1841281177
Nephrology physician in Denton, Texas. Individual provider, active in the CMS NPPES registry since November 4, 2005.
## Identity
- **NPI:** 1841281177 (Entity type: Individual)
- **Enumerated:** November 4, 2005
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** K2993 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 3315 COLORADO BLVD, SUITE 102, Denton, TX 76210-6884
- **Phone:** (940) 320-1708 · **Fax:** (940) 565-5457
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Questcare Hospitalists PLLC (NPI 1265441620, Dallas, TX); Century Integrated Partners, Inc (NPI 1447615711, Dallas, TX); Emerus Oklahoma Hospitalists PLLC (NPI 1124799952, Oklahoma City, OK); Emerus Inpatient Providers Sc (NPI 1881365609, The Woodlands, TX); 24 Hour Physicians, Inc (NPI 1396083424, Spring, TX); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** December 17, 2015
- **Other identifiers:** Medicare PIN 8422N3 (TX); Medicaid 132484008 (TX); Other 390008040
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Source: [NPI Profile](https://npiprofile.com/npi/1841281177) · Data from the CMS NPPES public registry.