Kevin Cornelius McMahon, M.D.
Neurology Physician · Seguin, TX
Kevin Cornelius McMahon, M.D. is a neurology physician with a practice address in Seguin, Texas, and NPI 1124339528, issued on Jun 30, 2010. Check the license (Texas Q3049, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kevin Cornelius McMahon
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- Q3049 TX
Self-reported in NPPES; status is on the state search - Practice location
- 417 S. King Street, Seguin, TX 78155
- Phone
- (830) 484-4608
- Enumerated
- Jun 30, 2010
- Record last updated
- Jun 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20150709002498); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,382 in Texas → Look up another NPI →
Verify Kevin Cornelius McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q3049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average neurology physician in 2024
1,685 Medicare Part D claims for 217 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Carbidopa-Levodopa235 claims
- Rasagiline Mesylate120 claims
- Levetiracetam118 claims
- Cyclobenzaprine Hcl77 claims
- Lacosamide55 claims
- Gabapentin54 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $415.03
14 payments; by number, the most common kind was food and beverage; the largest payer was Ceribell, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Neurohospitalist OF Mcallen, PLLCMcAllen, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kevin Cornelius McMahon among 1,382 neurology physician records in Texas
Kevin Cornelius McMahon, M.D. is one of 1,382 neurology physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 59% of them.
- NPI issued2010 · 59% of these records are older, 37% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2010 · median 2003 among the 930 with a school on file
- Record last updated2026 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Texas
There are 1,382 neurology physician records in Texas.
All 1,382 in Texas → Every provider in Seguin → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Mark Ferrante, MDSeguin, TX 781551285848127
- Yanko Yankov, M.D.Bulverde, TX 781631801856422
- Ryan Armour, D.O.New Braunfels, TX 781321003080557
- Bill Davis, MDNew Braunfels, TX 781321154352557
- Gerlyn Friesenhahn, M.D.New Braunfels, TX 781301346356201
- Ishan Adhikari, MDSan Antonio, TX 782071205129673
- Robert Hart, MDSan Antonio, TX 782071417064577
- Romana Kleinguenther, M.D.San Antonio, TX 782071235224379
Common questions
What is Kevin Cornelius McMahon, M.D.'s NPI number?
Kevin Cornelius McMahon, M.D.'s National Provider Identifier (NPI) is 1124339528, issued on Jun 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Kevin Cornelius McMahon, M.D. located?
The NPPES record lists a practice address at 417 S. King Street, Seguin, TX, 78155. Phone: (830) 484-4608. Providers update this record themselves, so call before visiting.
How can I verify Kevin Cornelius McMahon, M.D.'s license?
NPPES lists Texas license number Q3049, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kevin Cornelius McMahon, M.D. prescribe under Medicare Part D?
In 2024, Kevin Cornelius McMahon, M.D. had 1,685 Medicare Part D claims for 217 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Kevin Cornelius McMahon, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.