QUESTCARE MATRIX, PLLC
NPI 1629524665
Internal Medicine in Houston, TX
About Questcare Matrix, Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
QUESTCARE MATRIX, PLLC (NPI 1629524665) is a healthcare organization registered as an internal medicine in Houston, Texas and active in the NPI registry since August 2016. The organization lists Mark J Slepin, Authorized Official, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Questcare Matrix, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
76Medicare enrollment records show 76 clinicians reassign Medicare billing to Questcare Matrix, PLLC, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 7
Nearest to this location (20)
See all 76Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Questcare Matrix, PLLC's NPI number?
The NPI number for Questcare Matrix, PLLC is 1629524665. It was assigned to this organization in the NPPES registry on August 30, 2016.
Where is Questcare Matrix, PLLC located?
Questcare Matrix, PLLC is located at 14100 Karissa Ct, Houston, TX 77049. The listed phone number is (954) 939-5000.
What is Questcare Matrix, PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Questcare Matrix, PLLC enrolled in Medicare?
Yes. Questcare Matrix, PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Questcare Matrix, PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 76 clinicians in 7 Medicare specialties reassign their Medicare billing to Questcare Matrix, PLLC. A 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 the clinician's services. The largest specialties are Internal Medicine (42), Nurse Practitioner (24) and Family Practice (4). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Questcare Matrix, PLLC accept?
Health plans from Blue Cross and Blue Shield of Texas and Oscar Insurance Company list Questcare Matrix, PLLC 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.
When was this NPI record last updated?
The NPPES record for Questcare Matrix, PLLC was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.
# Questcare Matrix, Pllc · NPI 1629524665
Internal Medicine organization in Houston, Texas. Organization record, active in the CMS NPPES registry since August 30, 2016.
## Identity
- **NPI:** 1629524665 (Entity type: Organization)
- **Enumerated:** August 30, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Mark Slepin, AUTHORIZED OFFICIAL
## Practice location
- **Address:** 14100 KARISSA CT, Houston, TX 77049-3866
- **Phone:** (954) 939-5000 · **Fax:** (877) 250-6889
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 76 clinicians in 7 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (42), Nurse Practitioner (24), Family Practice (4); [full list](https://npiprofile.com/npi/1629524665/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1629524665) · Data from the CMS NPPES public registry.