IES HOUSTON
NPI 1801458708
Emergency Medicine in Pasadena, TX
About Ies Houston NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IES HOUSTON (NPI 1801458708) is a healthcare organization registered as an emergency medicine in Pasadena, Texas and active in the NPI registry since July 2019. The organization maintains 7 additional practice locations and lists Nestor Zenarosa, Founder And Chief Medical Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 2
Secondary Practice Locations 7
Other Identifiers 1
Group Practice 1
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)
Ies Houston is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
639Medicare enrollment records show 639 clinicians reassign Medicare billing to Ies Houston, which bills Medicare for the services they deliver. Of these, 22 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 7
Nearest to this location (20)
See all 639Webster, TX 77598
Source: 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 Integrative Emergency Services Physician Group-Houston PLLC's NPI number?
The NPI number for Integrative Emergency Services Physician Group-Houston PLLC is 1801458708. It was assigned to this organization in the NPPES registry on July 1, 2019. The provider is doing business as Ies Houston. The provider was formerly known as Integrative Emergency Services Physician Group-Houston.
Where is Integrative Emergency Services Physician Group-Houston PLLC located?
Integrative Emergency Services Physician Group-Houston PLLC is located at 4500 E Sam Houston Pkwy S, Pasadena, TX 77505. The listed phone number is (713) 948-7000.
What is Integrative Emergency Services Physician Group-Houston PLLC's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Integrative Emergency Services Physician Group-Houston PLLC enrolled in Medicare?
Yes. Integrative Emergency Services Physician Group-Houston PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Integrative Emergency Services Physician Group-Houston PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 639 clinicians in 7 Medicare specialties reassign their Medicare billing to Integrative Emergency Services Physician Group-Houston 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 Emergency Medicine (487), Nurse Practitioner (87) and Family Practice (50). Of these, 22 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Integrative Emergency Services Physician Group-Houston PLLC accept?
Health plans from Blue Cross and Blue Shield of Texas list Integrative Emergency Services Physician Group-Houston 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 Integrative Emergency Services Physician Group-Houston PLLC was last updated on November 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months 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.
# Ies Houston · NPI 1801458708
Emergency Medicine organization in Pasadena, Texas. Organization record, active in the CMS NPPES registry since July 1, 2019.
## Identity
- **NPI:** 1801458708 (Entity type: Organization)
- **Enumerated:** July 1, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **Legal business name:** Integrative Emergency Services Physician Group-Houston Pllc
- **Also known as:** INTEGRATIVE EMERGENCY SERVICES PHYSICIAN GROUP-HOUSTON (Former Legal Business Name)
- **Organization subpart:** No
- **Authorized official:** Nestor Zenarosa, FOUNDER AND CHIEF MEDICAL OFFICER
## Practice location
- **Address:** 4500 E SAM HOUSTON PKWY S, Pasadena, TX 77505-3959
- **Phone:** (713) 948-7000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 639 clinicians in 7 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Emergency Medicine (487), Nurse Practitioner (87), Family Practice (50); 22 practice within 10 miles; [full list](https://npiprofile.com/npi/1801458708/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 14, 2024
- **Other identifiers:** Medicaid 137601425 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1801458708) · Data from the CMS NPPES public registry.