MARK JORDAN WEISBERG M.D.
NPI 1568690279
Internal Medicine in Brownsville, TX
About Mark Jordan Weisberg M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK JORDAN WEISBERG M.D. (NPI 1568690279) is an individual internal medicine provider in Brownsville, Texas, licensed in Texas (P1947) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, is affiliated with Valley Baptist Medical Center- Brownsville, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
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
Mark Jordan Weisberg M.d. 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
5Medicare enrollment records show Mark Weisberg reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brownsville, TX 78526
- Reassigned Medicare billing, Texas enrollment
- 7 clinicians in this Medicare group
Brownsville, TX 78526
- Reassigned Medicare billing, Texas enrollment
- 9 clinicians in this Medicare group
Brownsville, TX 78521
- Reassigned Medicare billing, Texas enrollment
- 8 clinicians in this Medicare group
San Antonio, TX 78258
- Reassigned Medicare billing, Texas enrollment
- 964 clinicians in this Medicare group
Lakeway, TX 78734
- Reassigned Medicare billing, Texas enrollment
- 7 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 13
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Valley Baptist Medical Center- Brownsville
Acute Care Hospitals · Brownsville, TXVhs Harlingen Hospital Company LLC
Acute Care Hospitals · Harlingen, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78526 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 13
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BROWNSVILLE, TX 78526
BROWNSVILLE, TX 78526
BROWNSVILLE, TX 78526
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 Mark Weisberg's NPI number?
The NPI number for Mark Weisberg is 1568690279. It was assigned to this individual provider in the NPPES registry on July 1, 2009.
Where is Mark Weisberg located?
Mark Weisberg practices at 100 E Alton Gloor Blvd, Brownsville, TX 78526. The listed phone number is (956) 518-1016.
What is Mark Weisberg's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Weisberg enrolled in Medicare?
Yes. Mark Weisberg 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 Mark Weisberg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Weisberg reassigns Medicare benefits to 5 organizations: W & w Medical Consulting PLLC (Brownsville, TX), Femi Layiwola, MD, PA (Brownsville, TX), C.L. Anderson, Jr., M.D., PLLC (Brownsville, TX), Bhs Physicians Network, Inc (San Antonio, TX) and Lakeway Medical Clinic, LLC (Lakeway, TX). 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 Mark Weisberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Weisberg accept?
Health plans from Antidote Health of TX, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Oscar Insurance Company and WellPoint list Mark Weisberg 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 Mark Weisberg affiliated with any hospitals?
According to CMS data, Mark Weisberg is affiliated with Valley Baptist Medical Center- Brownsville and Vhs Harlingen Hospital Company LLC.
When was this NPI record last updated?
The NPPES record for Mark Weisberg was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.