NPPES file of Aug 9, 2026

Louis Martin McMahon, O.D.

Corneal and Contact Management Optometrist · El Paso, TX

Louis Martin McMahon, O.D. is a corneal and contact management optometrist with a practice address in El Paso, Texas, and NPI 1114919701, issued on Aug 18, 2005. Check the license (Texas 3503TG, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114919701
Name
Louis Martin McMahon
Credential
O.D.
Primary taxonomy
Corneal and Contact Management Optometrist 152WC0802X
License number
3503TG TX
Self-reported in NPPES; status is on the state search
Practice location
9513 Viscount Blvd, El Paso, TX 79925
Phone
(915) 590-9977
Enumerated
Aug 18, 2005
Record last updated
Mar 25, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(915) 590-9976
Medicaid ID
0459141 TX
Medicare enrollment
Enrolled (PECOS I20110127000497); accepts Medicare assignment
Medical or professional school
University Of Houston - College Of Optometry, 1985
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Louis Martin McMahon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 3503TG
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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80% fewer Medicare Part D claims than the average corneal and contact management optometrist in 2024

46 Medicare Part D claims for 27 beneficiaries, against an average of 225 among the 585 providers of this specialty who prescribed in Part D. Brand-name drugs were 70% of claims.

  1. Louis McMahon46
  2. Specialty average225

Most prescribed

  1. Latanoprost21 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $122.89

3 payments; by number, the most common kind was food and beverage; the largest payer was Glaukos Corporation. The 610 providers of this specialty with any payment received $1,035.17 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Louis McMahon$122.89
  2. Specialty average$1,035.17

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Aeg Texas Professional PLLCFlower Mound, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louis Martin McMahon among 112 corneal and contact management optometrist records in Texas

Louis Martin McMahon, O.D. is one of 112 corneal and contact management optometrist records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated1985 · median 1996 among the 51 with a school on file
  • Record last updated2015 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152WC0802X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Corneal and Contact Management Optometrist providers in Texas

There are 112 corneal and contact management optometrist records in Texas.

The 8 corneal and contact management optometrist records with the nearest ZIP codes

  1. Todd Reiter, O.D.El Paso, TX 799251508978776
  2. Mario Caballero, O.D.El Paso, TX 799351760444293
  3. Richard Nevins, O.D.El Paso, TX 799361427281435
  4. James Demarco, ODEl Paso, TX 799121043739568
  5. Charles Phillips, ODMidland, TX 797071093735011
  6. James Wadley, O.D.Abilene, TX 796051922160423
  7. David Dow, O.D.Amarillo, TX 791211548392517
  8. Misty Leblanc, O.D.Pampa, TX 790651093835464

Common questions

What is Louis Martin McMahon, O.D.'s NPI number?

Louis Martin McMahon, O.D.'s National Provider Identifier (NPI) is 1114919701, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Louis Martin McMahon, O.D. located?

The NPPES record lists a practice address at 9513 Viscount Blvd, El Paso, TX, 79925. Phone: (915) 590-9977. Providers update this record themselves, so call before visiting.

How can I verify Louis Martin McMahon, O.D.'s license?

NPPES lists Texas license number 3503TG, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Louis Martin McMahon, O.D. prescribe under Medicare Part D?

In 2024, Louis Martin McMahon, O.D. had 46 Medicare Part D claims for 27 beneficiaries; the average among corneal and contact management optometrist prescribers was 225. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.