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2026 NPPES data Gastroenterology Physician NPI 1457465163 M.D.
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Mark Allen, M.D.

Gastroenterology Physician in Kansas City, Missouri.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 636 beneficiaries · Gastroenterology Physician avg: 848
MIPS score
75.2/100
▼ 8 pts below national avg 83.5 · Above neutral
Industry payments
$1.5K
74 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Mark Allen, M.D. reported a CMS MIPS final score of 75.2/100 - below the 83.5 national average - and filed 1,283 Medicare Part D claims in 2024.

75.2/100
MIPS score · -8 vs avg
1K
Part D claims, 2024
Likely
board-certified (heuristic)
≥15th
pct among measured MIPS (lower-bound band)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Federal trust snapshot

What official records show about Mark Allen, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1457465163), first enumerated 08/18/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 1,283 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 75.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Industry payment transparency

    $1.5K in reported industry payments (74 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1457465163 · Gastroenterology Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-BELOW · RX-MID · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1457465163
  • ENUM-LEGACY 2006
  • TAX-MID 17K Gastroenterology Physician
  • MIPS-BELOW 75.2/100
  • RX-MID 1,283
  • BOOK-THIN 325 in Missouri
  • PHOTO-FINISH Sarpreet Basra · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Mark Allen, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

75 ≥ 15th percentile 15% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Mark Allen, M.D. sits

This provider among gastroenterology physician peers

Across the 5,560 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Allen, M.D. writes more Part D claims than 74% of them and scores higher on MIPS quality than 14% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 78Mark Allen, M.D., Part D claim volume, percentile in specialty: 74 · MIPS quality, percentile: 14
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Mark Allen, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Mark Allen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Mark Allen, M.D.?

Below national average

NPI registry status

Active

Issued 08/18/2006

NPI 1457465163

Primary specialty

Gastroenterology Physician

Mid-sized

17,061 US NPIs in this specialty

Medicare Part D claims

1,283 51% vs specialty avg

2024 prescription claims

Specialty avg: 848

MIPS final score

75.2/100 8.3 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Missouri

How Gastroenterology Physician compares to other specialties among Missouri providers

Missouri providers
Professional Counselor4.8%Pharmacist4.8%Clinical Social Worker4.5%Speech-Language Pathologist4.5%Family Nurse Practitioner4.3%Physical Therapist4%Gastroenterology Physician0.3%
Largest specialties in Missouri (% of in-state providers)

Medicare quality performance, MIPS

Mark Allen, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average

Below national average
MIPS Final Score
75.2/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%75.2%
MIPS final score (Gastroenterology Physician) - 75.2/100 vs national avg 83.5
How MIPS and board certification work

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Practice Address

4321 WASHINGTON ST
Kansas City, MO 64111
(816) 561-2000

Provider Details

NPI 1457465163
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 08/18/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

75.2308
Final Score
Measured-score avg: 83.5
88.9344
Quality
28.5015
Cost
100
Promoting Interoperability

Reporting: Group practice

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mark Allen, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.5K

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

1,283
Total Claims
$743K
Total Drug Cost
636
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,100.3
Total Day Supply
48,903
Generic Drug Cost
$54K
Antibiotic Claims
32

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
1.09
Gender Split
50% female / 50% male
Age Distribution
<65: 54, 65-74: 357, 75-84: 203, 85+: 22

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Mark Allen, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Sod Sulf-Potass Sulf-Mag Sulf
Sodium, Potassium,mag Sulfates
396
Omeprazole
 179
Pantoprazole Sodium
 104
Famotidine
 89
Colestipol Hcl
 50
Diphenoxylate-Atropine
Diphenoxylate Hcl/Atropine
46
Rinvoq
Upadacitinib
31
Dexlansoprazole Dr
Dexlansoprazole
22
Azathioprine
 20
Sucralfate
 20

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Gastroenterology Physician in MO → All providers in Missouri → Compare specialties →

Gastroenterology Physician Overview

How Mark Allen, M.D. fits within the Gastroenterology Physician landscape nationally.

17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider

Mark Allen, M.D.'s 1,283 claims are above the specialty average of 848.

Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Allen, both outside Missouri so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (75.2 here).

Sarpreet Basra 75.2 LA Aamer Agha 75.3 TX Omar Haq 75.3 TX Adnan Nadir 75.3 TX

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Robert Carroll Chicago, IL Alan Diamond Silver Spring, MD Jeanette Mendez Encinitas, CA Jep Dalton Montgomery, AL

Nearby Gastroenterology Physician Providers in Missouri

Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Allen.

One of 325 Gastroenterology Physician providers enrolled in Missouri, 5 are shown here.

Dr. Kelsey Able
DO
Kansas City, MO
Dr. Barry Abramson
M.D.
Saint Louis, MO
Dr. Tarek Abu-Rajab Tamimi
M.D.
Kansas City, MO
Dr. Ayooluwatomiwa Adekunle
MD
O Fallon, MO
Dr. Aireen-Ronalda Agulto
MD
Saint Louis, MO

Compare Gastroenterology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Mark Allen, M.D.'s specialty? ▼
Mark Allen, M.D. specializes in Gastroenterology Physician and practices in Kansas City, Missouri. Credentials: M.D..
How much does Mark Allen, M.D. prescribe under Medicare Part D? ▼
In 2024, Mark Allen, M.D. wrote 1,283 Medicare Part D claims totaling $743K in drug costs for 636 beneficiaries.
What is Mark Allen, M.D.'s Medicare quality score? ▼
Mark Allen, M.D. has a CMS MIPS Final Score of 75.2/100 (Quality: 88.9, Cost: 28.5). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Allen, M.D. located? ▼
Mark Allen, M.D. is located at 4321 WASHINGTON ST, Kansas City, MO, 64111. Phone: (816) 561-2000.
What is Mark Allen, M.D.'s NPI number? ▼
Mark Allen, M.D.'s National Provider Identifier (NPI) is 1457465163, issued on 08/18/2006.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Mark Allen, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Allen, M.D.'s most frequently prescribed drugs include Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Allen, M.D. accept Medicare? ▼
Mark Allen, M.D. appears in CMS Medicare data with 1,283 Part D claims and 636 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Allen, M.D.'s credentials? ▼
Mark Allen, M.D.'s NPI is 1457465163 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

View source datasets and methodology notes
Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.