Quick answers
- Which hospitals does Lon A. Walder work at?
- Medicare's official clinician data lists Lon A. Walder at 1 hospital: Fort Duncan Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lon A. Walder see patients?
- Medicare's clinician data lists 2 practice locations, including Eagle Pass, TX. Call before your visit to confirm the address.
- What is Lon A. Walder's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Lon A. Walder accept Medicare assignment?
- Yes. Medicare's clinician data says Lon A. Walder accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Lon A. Walder?
- (830) 773-5358, as listed in official Medicare / NPI Registry data.
- What is Lon A. Walder's NPI number?
- 1184674822. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lon A. Walder works
Medicare's Facility Affiliation Data lists Lon A. Walder at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fort Duncan Medical CenterEagle Pass, TX · Acute Care Hospital · CCN 450092
Practice locations
Addresses where Lon A. Walder is enrolled with Medicare (CMS data updated 2026-10-02).
- 2525 N Veterans BlvdEagle Pass, TX 78852 (830) 773‑5358
- 4018 El Indio HwyEagle Pass, TX 78852 (830) 872‑3460
Group practices
Medicare enrollment lists Lon A. Walder as a member of this group (CMS data updated 2026-10-02).
- United Medical Centers24 clinicians in the group
Specialties
Other interventional cardiologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184674822 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians