Charles William McMahon, M.D.
Gastroenterology Physician · Kansas City, MO
Charles William McMahon, M.D. is a gastroenterology physician with a practice address in Kansas City, Missouri, and NPI 1861768053, issued on Apr 1, 2012. Check the license (Missouri 2015013288, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Charles William McMahon
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 2015013288 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4321 Washington St Ste 5600, Kansas City, MO 64111
- Phone
- (816) 561-2000
- Enumerated
- Apr 1, 2012
- Record last updated
- Mar 2, 2024
- Medicare enrollment
- Enrolled (PECOS I20210504001504); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 2012
- Entity
- Type 1 · individual
Also registered at 4321 Washington St Ste 5600
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sakher Albadarin, M.D.Gastroenterology Physician1750670568
- Hillary Bownik, M.DGastroenterology Physician1013147206
- Tiffany Cruse, APRNFamily Nurse Practitioner1194022525
Verify Charles William McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2015013288Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average gastroenterology physician in 2024
868 Medicare Part D claims for 519 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf396 claims
- Omeprazole149 claims
- Pantoprazole Sodium81 claims
- Famotidine25 claims
- Dicyclomine Hcl20 claims
- Budesonide Dr16 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: $818.88
41 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 2 group practices
- Mid America Gastro Intestinal Consultants P CKansas City, MO
- Saint Lukes Physician Group IncKansas City, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri.
Other gastroenterology physician records in Missouri
- Yazan Abdalla, M.D.Saint Louis, MO1033365358
- Ma'n Abdullah, MDColumbia, MO1598766891
- Kelsey Able, DOKansas City, MO1376806588
- Barry Abramson, M.D.Saint Louis, MO1922025980
- Tarek Abu-Rajab Tamimi, M.D.Kansas City, MO1689840282
- Ayooluwatomiwa Adekunle, MDO Fallon, MO1619593779
- Aireen-Ronalda Agulto, MDSaint Louis, MO1447771191
- Khulood Ahmed, M.D.Columbia, MO1588827893
- Mohamed Ahmed, MDKansas City, MO1194353425
- Zarir AhmedSaint Louis, MO1770937492
Common questions
What is Charles William McMahon, M.D.'s NPI number?
Charles William McMahon, M.D.'s National Provider Identifier (NPI) is 1861768053, issued on Apr 1, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Charles William McMahon, M.D. located?
The NPPES record lists a practice address at 4321 Washington St Ste 5600, Kansas City, MO, 64111. Phone: (816) 561-2000. Providers update this record themselves, so call before visiting.
How can I verify Charles William McMahon, M.D.'s license?
NPPES lists Missouri license number 2015013288, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles William McMahon, M.D. prescribe under Medicare Part D?
In 2024, Charles William McMahon, M.D. had 868 Medicare Part D claims for 519 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.