Mark J. Allen, M.D.
Gastroenterology Physician · Kansas City, MO
Mark J. Allen, M.D. is a gastroenterology physician with a practice address in Kansas City, Missouri, and NPI 1457465163, issued on Aug 18, 2006. Check the license (Missouri R2A11, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mark J. Allen
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- R2A11 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4321 Washington St, Kansas City, MO 64111
- Phone
- (816) 561-2000
- Enumerated
- Aug 18, 2006
- Record last updated
- Nov 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 20254011 MO
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 414 in Missouri → Look up another NPI →
Also registered at 4321 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emily Beerman, NPAcute Care Nurse Practitioner1194174227
- Robert Belt, M.D.Hematology & Oncology Physician1710959887
- Thelma Blew, M.S.,R.D.,L.D.Registered Dietitian1114231149
Verify Mark J. Allen 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 R2A11Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average gastroenterology physician in 2024
1,283 Medicare Part D claims for 636 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf396 claims
- Omeprazole179 claims
- Pantoprazole Sodium104 claims
- Famotidine89 claims
- Colestipol Hcl50 claims
- Diphenoxylate-Atropine46 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 practice group's MIPS final score for 2023 (Medicare payment program): 75.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,464.87
74 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.
Mark J. Allen among 414 gastroenterology physician records in Missouri
Mark J. Allen, M.D. is one of 414 gastroenterology physician records with a practice address in Missouri. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 47% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2015 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri.
All 414 in Missouri → Every provider in Kansas City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Laith Al Momani, MDKansas City, MO 641111740642065
- Sakher Albadarin, M.D.Kansas City, MO 641111750670568
- Hillary Bownik, M.DKansas City, MO 641111013147206
- Donald Campbell, M.D.Kansas City, MO 641111144229089
- Rajiv Chhabra, M.D.Kansas City, MO 641111841393196
- Wendell Clarkston, MDKansas City, MO 641111144266248
- Perry Culver, M.D.Kansas City, MO 641111932213527
- Vineet Gudsoorkar, MDKansas City, MO 641111396005120
Common questions
What is Mark J. Allen, M.D.'s NPI number?
Mark J. Allen, M.D.'s National Provider Identifier (NPI) is 1457465163, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Allen, M.D. located?
The NPPES record lists a practice address at 4321 Washington St, Kansas City, MO, 64111. Phone: (816) 561-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Allen, M.D.'s license?
NPPES lists Missouri license number R2A11, 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 Mark J. Allen, M.D. prescribe under Medicare Part D?
In 2024, Mark J. Allen, M.D. had 1,283 Medicare Part D claims for 636 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Mark J. Allen, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.2 of 100, reported for the practice group. 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.