Lon Andrew Walder, DO - Medicare Interventional Cardiology in Eagle Pass, TX

Lon Andrew Walder, DO is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Eagle Pass, Texas. He went to Oklahoma State University College Of Osteopathic Medicine and graduated in 1986 and has 38 years of diverse experience with area of expertise as Interventional Cardiology. He is a member of the group practice United Medical Centers and his current practice location is 4018 El Indio Hwy, Eagle Pass, Texas. You can reach out to his office (for appointments etc.) via phone at (830) 872-3460.

Lon Andrew Walder is licensed to practice in Texas (license number J3931) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1184674822.

Contact Information

Lon Andrew Walder, DO
4018 El Indio Hwy,
Eagle Pass, TX 78852-6690
(830) 872-3460
(830) 872-3470

Map and Direction




Physician's Profile

Full NameLon Andrew Walder
GenderMale
SpecialityInterventional Cardiology
Experience38 Years
Location4018 El Indio Hwy, Eagle Pass, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Lon Andrew Walder attended and graduated from Oklahoma State University College Of Osteopathic Medicine in 1986
  NPI Data:
  • NPI Number: 1184674822
  • Provider Enumeration Date: 05/11/2006
  • Last Update Date: 09/11/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4688657299
  • Enrollment ID: I20090609000302

Medical Identifiers

Medical identifiers for Lon Andrew Walder such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184674822NPI-NPPES
1360869-02MedicaidTX
4376993OtherTXAETNA PROVIDER ID
136086909MedicaidTX
1360869-05MedicaidTX
1360869-11MedicaidTX
86462KOtherTXBCBS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0011XInternal Medicine - Interventional Cardiology J3931 (Texas)Secondary
207RC0000XInternal Medicine - Cardiovascular Disease J3931 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Fort Duncan Medical CenterEagle pass, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
United Medical Centers761895713520

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Lon Andrew Walder allows following entities to bill medicare on his behalf.
Entity NameUnited Medical Centers
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710980669
PECOS PAC ID: 7618957135
Enrollment ID: O20040817000497
Entity NameMaverick County Hospital District
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548275126
PECOS PAC ID: 2466369061
Enrollment ID: O20051201000817

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Lon Andrew Walder is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Lon Andrew Walder, DO
2525 N Veterans Blvd,
Eagle Pass, TX 78852-3302

Ph: (830) 773-8917
Lon Andrew Walder, DO
4018 El Indio Hwy,
Eagle Pass, TX 78852-6690

Ph: (830) 872-3460

Reviews and Comments


Internal Medicine Doctors in Eagle Pass, TX

Dr. Robert Marquinez, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2525 N Veterans Blvd, Eagle Pass, TX 78852
Phone: 830-773-5358    Fax: 830-773-0258
Radha Kishan Adusumilli,
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 3103 Megan St, Eagle Pass, TX 78852
Phone: 830-773-0212    Fax: 830-773-0212
Dr. James J Galizia, M.D.
Cardiovascular Disease
Medicare: May Accept Medicare Assignments
Practice Location: 1995 Williams St, Eagle Pass, TX 78852
Phone: 830-752-2322    Fax: 210-892-0912
Dr. Jorge Alejandro Barboza Sosa, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2203 Del Rio Blvd Ste D, Eagle Pass, TX 78852
Phone: 830-776-7324    Fax: 830-776-7371
Dr. Ruben De Los Santos, MD PA
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1955 East Main St, Eagle Pass, TX 78852
Phone: 830-773-7474    Fax: 830-773-2699
Dr. Mammen Maliakkal, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3333 N Foster Maldonado Blvd, Eagle Pass, TX 78852
Phone: 830-773-5321    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.