GUILLERMO J MORELL MD PA
NPI 1285800599
Internal Medicine - Nephrology in Houston, TX
About Guillermo J Morell Md Pa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GUILLERMO J MORELL MD PA (NPI 1285800599) is a healthcare organization registered as a nephrology in Houston, Texas and active in the NPI registry since May 2008. The organization lists Guillermo J Morell, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Guillermo J Morell Md Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Guillermo J Morell MD PA, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Guillermo J Morell MD PA's NPI number?
The NPI number for Guillermo J Morell MD PA is 1285800599. It was assigned to this organization in the NPPES registry on May 6, 2008.
Where is Guillermo J Morell MD PA located?
Guillermo J Morell MD PA is located at 6560 Fannin St Ste 1532, Houston, TX 77030. The listed phone number is (713) 796-0800.
What is Guillermo J Morell MD PA's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Guillermo J Morell MD PA enrolled in Medicare?
Yes. Guillermo J Morell MD PA is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Guillermo J Morell MD PA?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nephrology) reassigns their Medicare billing to Guillermo J Morell MD PA. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Guillermo J Morell MD PA was last updated on February 26, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Guillermo J Morell Md Pa · NPI 1285800599
Nephrology organization in Houston, Texas. Organization record, active in the CMS NPPES registry since May 6, 2008.
## Identity
- **NPI:** 1285800599 (Entity type: Organization)
- **Enumerated:** May 6, 2008
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **Organization subpart:** No
- **Authorized official:** Guillermo Morell, PHYSICIAN
## Practice location
- **Address:** 6560 FANNIN ST STE 1532, Houston, TX 77030-2728
- **Phone:** (713) 796-0800 · **Fax:** (713) 796-0809
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Nephrology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 26, 2010
- **Other identifiers:** Medicare PIN 00544Z (TX)
---
Source: [NPI Profile](https://npiprofile.com/npi/1285800599) · Data from the CMS NPPES public registry.