Dr. Lon Andrew Walder, DO

  • Eagle Pass, TX
  • Cardiologist
NPI1184674822PAC ID4688657299
Medicare services, 2024
145
Medicare patients, 2024
119
Part D claims, 2024
849
Publications
3
Hospital affiliations
1
Practice address
2525 N Veterans Blvd - Bldg 2, Eagle Pass, TX 78852
Practice phone
Call (830) 773-1635
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Women's Health Center - Eagle Pass Veterans Blvd Clinic

FQHC - Main Site · Eagle Pass, Texas

See all 7 affiliations

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Dr. Lon Andrew Walder is a cardiologist in Eagle Pass, Texas

Dr. Walder practices at Women's Health Center - Eagle Pass Veterans Blvd Clinic in Eagle Pass, Texas.

Dr. Walder's NPI, 1184674822, was assigned on May 11, 2006. Dr. Walder graduated from Oklahoma State University College Of Osteopathic Medicine in 1986. Dr. Walder holds Texas license J3931.

NPI and contact details
Medicare PAC ID
4688657299
NPI enumeration date
May 11, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(830) 773-1635
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
66
Medical school graduation
1986

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Lon Andrew Walder practices at Women's Health Center - Eagle Pass Veterans Blvd Clinic in Eagle Pass, Texas

Dr. Walder's primary practice is Women's Health Center - Eagle Pass Veterans Blvd Clinic, at 2525 N Veterans Blvd - Bldg 2, Eagle Pass, TX 78852 in Maverick County. The practice phone is (830) 773-1635.

  • Women's Health Center - Eagle Pass Veterans Blvd Clinic
    2525 N Veterans Blvd - Bldg 2, Eagle Pass, TX 78852 · Maverick CountyPhone(830) 773-1635

Source: Dmand AI Affiliation Data

Dr. Lon Andrew Walder is affiliated with 5 sites of care and 2 medical groups

Dr. Walder's primary practice is Women's Health Center - Eagle Pass Veterans Blvd Clinic in Eagle Pass, Texas. Dr. Walder is also affiliated with Fort Duncan Regional Medical Center. The medical group on file is United Medical Centers. Dmand AI also links Dr. Walder to 1 more breast imaging center, 1 community health center, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Walder's employer is on file too: a community health center (fqhc).

See all 7 affiliations for Dr. Walder

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Lon Andrew Walder's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walder practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Women's Health Center - Eagle Pass Veterans Blvd ClinicAvailable with a free account
+4 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Lon Andrew Walder is one of 1,481 cardiologists in Texas

Cardiovascular disease is Dr. Walder's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Walder is board certified in 1993 - 2027 by the TX State License. Dr. Walder is licensed in Texas.

Specialties and state licenses

  • Cardiovascular disease, TexasPrimaryLicense J3931 · taxonomy 207RC0000X

Clinical focus

Dmand AI lists angioplasty, cardiac catheterization, pacemaker or defibrillator implantation and pacemaker replacement among the conditions Dr. Walder treats.

Cardiologists near Dr. Walder

Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Lon Andrew Walder billed Medicare for 145 services in 2024

CMS data shows 145 Medicare services from Dr. Walder across 4 procedure codes in 2024, for 119 Medicare patients. Medicare paid $8,321 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024145
Medicare patients119
Paid by Medicare$8,321
Procedure codes4

Dr. Walder's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 972024: 925%
Office and hospital visits
2023: 212024: 53152%

Dr. Walder compared with the Texas median for cardiologists, 2024

  • Dr. Walder
  • Texas median
Medicare services
145vs 1,95593% below
Medicare patients
119vs 62881% below
Part D claims
720vs 2,23268% below

Medians across 1,431 cardiologists in Texas with Dmand AI profiles that report each measure.

Dr. Walder's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Walder

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walder and other cardiologists in Texas.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Lon Andrew Walder treated 119 Medicare patients in 2024, average age 75

CMS counts 119 Medicare patients who saw Dr. Walder in 2024. The largest group is 75 to 84, with 45 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 65% are also on Medicaid. Their average risk score is 2.17, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Walder's median patient age at 69, with 52% women.

Medicare patients, 2024119
Average age75
Average risk score2.17
Also on Medicaid65%

Dr. Walder's Medicare patients by age, 2024

Dr. Walder's Medicare patients by sex, 2024

  • Women7765%
  • Men4235%

Chronic conditions among Dr. Walder's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes72%
  4. Ischemic heart disease61%
  5. Arthritis56%
  6. Chronic kidney disease53%
  7. Heart failure36%
  8. Osteoporosis32%

Share of Medicare patients with each condition. A patient can have several.

Dr. Walder's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women52%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Lon Andrew Walder wrote 849 Medicare Part D claims in 2024

In 2024, Dr. Walder wrote 849 Medicare Part D claims for 240 patients. 93% of them were for generic drugs. CMS names the drug for 720 of them, across 15 drugs with 11 or more claims each, at $63,831 in total drug cost. In 2023, CMS named 586 claims across 12 drugs.

Part D claims, 2024849
Drugs named by CMS15
Total drug cost$63,831
Part D patients240

Dr. Walder's Part D claims by kind of drug, 2024

  • Generic786 claims93%
  • Brand-name63 claims7%

Dr. Walder's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 5862024: 72023%

Drugs named by CMS: 15 in 2024, 12 in 2023.

See all prescribing by Dr. Walder

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Lon Andrew Walder takes part in Medicare

Dr. Walder accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Lon Andrew Walder has 3 publications on record

Dmand AI links 3 papers to Dr. Walder.

Papers3

Recent publications by Dr. Walder

See all 3 publications and co-authors

See who Dr. Walder researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Walder works with, so you can find a warm path to the right cardiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Lon Andrew Walder received $650 in industry payments from 2016 to 2023

CMS Open Payments shows 50 general payments to Dr. Walder from 11 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 98% of the total. Abbott Laboratories paid the most, $225.

General payments to Dr. Walder by program year, 2016 to 2023

General payments to Dr. Walder by kind, 2016 to 2023

$650in total
  • Food and beverage$64098%
  • Education$102%

Companies that paid Dr. Walder the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Walder

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Lon Andrew Walder has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Walder, most recently CMS Stage 1 2012 in 2012.

Awards and honors for Dr. Walder

  1. 2012
    • CMS Stage 1 2012
  2. Undated
    • ACC Fellow

Source: Dmand AI Professional Profile Data

Dr. Lon Andrew Walder graduated from Oklahoma State University College Of Osteopathic Medicine

Dr. Walder graduated from Oklahoma State University College Of Osteopathic Medicine in 1986. Dr. Walder is a member of ACC.

  1. Medical schoolOklahoma State University College Of Osteopathic Medicine
  2. Board certified in 1993 - 2027TX State License

Source: Dmand AI Professional Profile Data

Dr. Lon Andrew Walder accepts plans from 22 insurance carriers

Dr. Walder is in network with 22 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

Plan types Dr. Walder accepts, by number of carriers

  1. PPO13
  2. HMO12
  3. Medicare11
  4. POS6
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. Lon Andrew Walder's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Lon Andrew Walder

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Lon Andrew Walder's NPI number?

Dr. Lon Andrew Walder's NPI number is 1184674822. It was assigned on May 11, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Lon Andrew Walder?

Dr. Lon Andrew Walder is a cardiologist in Eagle Pass, Texas. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).

Where does Dr. Lon Andrew Walder practice?

Dr. Walder practices at 2525 N Veterans Blvd - Bldg 2, Eagle Pass, TX 78852. Dr. Walder's primary practice is Women's Health Center - Eagle Pass Veterans Blvd Clinic in Eagle Pass, Texas. Dmand AI also links Dr. Walder to 1 breast imaging center, 1 community health center, 1 group practice or clinic and 1 medical group.

What is Dr. Lon Andrew Walder's office phone number?

The practice phone on file for Dr. Walder is (830) 773-1635.

What is Dr. Lon Andrew Walder's medical license number?

Dr. Walder holds Texas license J3931.

Which hospitals is Dr. Lon Andrew Walder affiliated with?

Dr. Walder is affiliated with Fort Duncan Regional Medical Center.

What medical group is Dr. Lon Andrew Walder part of?

Dr. Walder is linked to United Medical Centers. Dmand AI links Dr. Walder to 1 more medical group.

Does Dr. Lon Andrew Walder accept Medicare?

Yes. CMS data shows Dr. Walder billed Medicare for 145 services in 2024, and Dr. Walder accepts Medicare assignment.

How many Medicare patients does Dr. Lon Andrew Walder see?

CMS counts 119 Medicare patients who saw Dr. Walder in 2024, with an average age of 75.

Is Dr. Lon Andrew Walder board certified?

Yes. Dr. Walder is board certified in 1993 - 2027 by the TX State License.

Show 7 more questionsShow fewer questions

What services does Dr. Lon Andrew Walder bill to Medicare?

In 2024, Dr. Walder's most billed Medicare services were heart test or procedure (93010), heart test or procedure (93306) and hospital inpatient care (99223).

Where did Dr. Lon Andrew Walder go to medical school?

Dr. Walder graduated from Oklahoma State University College Of Osteopathic Medicine in 1986.

What drugs does Dr. Lon Andrew Walder prescribe most?

In 2024 Medicare Part D data, Dr. Walder's most prescribed drugs by claims were Hydralazine HCl, Losartan Potassium and Amlodipine Besylate.

Has Dr. Lon Andrew Walder received payments from drug or device companies?

CMS Open Payments shows $650 in general payments to Dr. Walder from 11 companies from 2016 to 2023. The largest total came from Abbott Laboratories.

How long has Dr. Lon Andrew Walder been practicing?

Dr. Walder graduated from medical school in 1986, 40 years ago.

Does Dr. Lon Andrew Walder do research?

Dmand AI links 3 publications to Dr. Walder.

What insurance does Dr. Lon Andrew Walder accept?

Dr. Walder is in network with 22 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

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