DR. MARK J ALLEN (M.D.) – Gastroenterology Physician, NPI 1457465163
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. MARK J ALLEN (M.D.)
4321, Washington Street, Plaza-Westport, Country Club Plaza, Kansas City, Jackson County, Missouri, 64111, United States
SUITE 5600
KANSAS CITY, MO 641115961
Phone: (816) 561-2000
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 158 Open Payments records for all available years, with a total value of $3,056.
Total Amount is formed as General ($3,056) + Research ($0) + Ownership ($0) = $3,056.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: ABBVIE INC. ($1,241).
Total Amount
$3,056
General + Research + Ownership
Payments
158
Total payment records
General Amount
$3,056
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,241 |
| Celgene Corporation | $211 |
| QOL Medical, LLC | $169 |
| Merck Sharp & Dohme LLC | $148 |
| Fresenius Kabi USA, LLC | $146 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-04-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20070410000066 | I | Gastroenterology | MO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J3380 | Injection, vedolizumab, 1 mg | 36,300 | 19 | $0 |
| J1745 | Injection, infliximab, excludes biosimilar, 10 mg | 4,706 | 14 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 217 | 17 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 163 | 163 | $0 |
| 96365 | Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 132 | 25 | $0 |
Insurance plans in this area (ZIP 64111)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MO | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 59 | 58 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | MO | |
| G A S T R O E N T E R O L O G Y | MO | |
| G A S T R O E N T E R O L O G Y | KS | |
| G A S T R O E N T E R O L O G Y | MO | |
| - | MO | |
| Physician Assistant | KS | |
| G A S T R O E N T E R O L O G Y | IL |
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