Mark Benson, M.D.
NPI 1114950987 · Gastroenterology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Benson, M.D. is a Gastroenterology Physician provider in Madison, WI (NPI 1114950987).
Provider details
- NPI number
- 1114950987
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 51051 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
546 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 88 | $45 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 64 | $90 |
| Ultrasound Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope Through Mouth43237 | 41 | $165 |
| Ultrasound Guided Needle Aspiration Or Biopsy of Esophagus Using a Flexible Endoscope43238 | 36 | $192 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 35 | $121 |
| Review By Radiologist of Image From Tube Placement Into Bile Duct Using an Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 90 | 87 |
| Omeprazole | 67 | 22 |
| Lipase/Protease/Amylasebrand: Creon | 56 | 12 |
| Famotidine | 53 | 18 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 52 | 47 |
| Rabeprazole Sodium | 43 | 15 |
| Lipase/Protease/Amylasebrand: Zenpep | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$70 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2021-02-01
- Certified
- 2021-02-01
Frequently asked questions
- What is Mark Benson's NPI number?
- Mark Benson's National Provider Identifier (NPI) is 1114950987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Benson's specialty?
- Mark Benson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Benson located?
- Mark Benson's practice location on file with NPPES is 600 Highland Ave., Madison, WI 53792-3284.
- What is Mark Benson's phone number?
- The practice phone number listed in the NPPES registry for Mark Benson is (608) 263-8094.
- Does Mark Benson accept Medicare?
- Mark Benson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Benson's NPI active?
- Yes — Mark Benson's NPI (1114950987) is active in the NPPES registry as of the last update on 2021-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.