Physician Profile
Unclaimed ProfileAbout Dr. Allen
Mark J Allen, M.D. is a healthcare provider in Kansas City, MO specializing in gastroenterology. Medicare claims data shows Mark provided 53,139 services to 759 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (816) 561-2000
- Email not available
Practice Locations
4321 WASHINGTON ST SUITE 5600
Kansas City, MO 64111
Procedures Most Often Billed to Medicare
53,139 services · 759 patients · 16 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
159 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
85 |
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
76 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
75 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
54 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
30 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
137 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
123 |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
68 |
| Measurement of hydrogen in breath to test for stomach and bowel symptoms | Treatment | 91065 |
39 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 16 related providers in 2 groups
Other gastroenterologists in Kansas City 8
Same specialty, same city.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in MO who bill this service to Medicare most often.
Common questions
What is Dr. Allen's specialty?
Dr. Allen is a gastroenterologist in Kansas City, MO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Gastroenterology”.
NPI registry
Where can I find Dr. Allen?
Dr. Allen is listed at 4321 WASHINGTON ST SUITE 5600, Kansas City, MO 64111. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Allen?
The number on file is (816) 561-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Allen?
Dr. Allen's National Provider Identifier is 1457465163. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Allen have?
Dr. Allen has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What is Dr. Allen known for?
According to Medicare billing data, Dr. Allen performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of large bowel using a flexible endoscope and insertion of needle into vein for collection of blood sample; provides treatments such as injection of drug or substance under skin or into muscle and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Allen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Allen. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.