ROY R MARRERO JR. MD
NPI 1841249414
Emergency Medicine in Port Arthur, TX
About Roy R Marrero Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROY R MARRERO JR. MD (NPI 1841249414) is an individual emergency medicine provider in Port Arthur, Texas, licensed in Texas (J9750) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Meharry Medical College School Of Medicine (1986).
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 and accepts Medicare assignment
Roy R Marrero Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Roy Marrero reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, TX 77630
- Reassigned Medicare billing, Texas enrollment
- 115 clinicians in this Medicare group
Lumberton, TX 77657
- Reassigned Medicare billing, Texas enrollment
- 113 clinicians in this Medicare group
Liberty, TX 77575
- Reassigned Medicare billing, Texas enrollment
- 199 clinicians in this Medicare group
Houston, TX 77027
- Reassigned Medicare billing, Texas enrollment
- 82 clinicians in this Medicare group
Port Lavaca, TX 77979
- Reassigned Medicare billing, Texas enrollment
- 109 clinicians in this Medicare group
Austin, TX 78750
- Reassigned Medicare billing, Texas enrollment
- 93 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77640 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
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 Roy Marrero's NPI number?
The NPI number for Roy Marrero is 1841249414. It was assigned to this individual provider in the NPPES registry on May 9, 2006.
Where is Roy Marrero located?
Roy Marrero practices at 2555 Jimmy Johnson Blvd, Port Arthur, TX 77640. The listed phone number is (409) 724-7389.
What is Roy Marrero's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Roy Marrero enrolled in Medicare?
Yes. Roy Marrero is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Roy Marrero's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roy Marrero reassigns Medicare benefits to 6 organizations: Altus Exceptional Physician Group PLLC (Orange, TX), Texas ER Group PLLC (Lumberton, TX), Ess Of South Texas LLC (Liberty, TX), Tk Emergency Physicians Group PLLC (Houston, TX), Ess Of Port Lavaca LLC (Port Lavaca, TX) and 1 more organization, 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 Roy Marrero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Roy Marrero accept?
Health plans from Antidote Health of TX and Blue Cross and Blue Shield of Texas list Roy Marrero 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 Roy Marrero was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Roy R Marrero Jr., MD · NPI 1841249414
Emergency Medicine physician in Port Arthur, Texas. Individual provider, active in the CMS NPPES registry since May 9, 2006.
## Identity
- **NPI:** 1841249414 (Entity type: Individual)
- **Enumerated:** May 9, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** J9750 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 2555 JIMMY JOHNSON BLVD, Port Arthur, TX 77640-2007
- **Phone:** (409) 724-7389
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Altus Exceptional Physician Group PLLC (NPI 1730869207, Orange, TX); Texas ER Group PLLC (NPI 1235829359, Lumberton, TX); Ess Of South Texas LLC (NPI 1295128247, Liberty, TX); Tk Emergency Physicians Group PLLC (NPI 1942728019, Houston, TX); Ess Of Port Lavaca LLC (NPI 1922546936, Port Lavaca, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Meharry Medical College School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Other 8R9683 (TX); Medicare UPIN C16298; Medicare ID-Type Unspecified 8D3549 (TX)
---
Source: [NPI Profile](https://npiprofile.com/npi/1841249414) · Data from the CMS NPPES public registry.