Mario Garretto, MD
NPI 1497701809ActiveIndividual· Internal Medicine, Gastroenterology· Kenosha, WI
Internal Medicine, Gastroenterology (MD) in Kenosha, Wisconsin, trained at Rush Medical College of Rush University (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $273,822 for 2,057 claims, against $121,405 paid for services in 2024. Janssen Biotech, Inc. was the largest of 10 companies reporting payments in 2025, $1,015 in all, mostly food and beverage.
Overview
| NPI | 1497701809 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 26, 2006 |
| Last updated in NPPES | Mar 13, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25077 | WI |
| Internal Medicine | 207R00000X | 25077 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 621 |
|---|---|
| Services billed | 1,356 across 45 procedure codes |
| Paid by Medicare | $121,405 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,057 · 3,968 30-day fills |
|---|---|
| Patients | 705 |
| Total drug cost | $273,822 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Gastroenterology |
Medical group
- Froedtert South IncKenosha, WI · 161 clinicians
Hospital affiliation
- Froedtert South Inc.Kenosha, WI
Industry payments (Open Payments)
- 2025$1,015 · 37 payments from 10 companies
- 2024$678.03 · 31 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $348.76 | 9 |
| Abbvie Inc. | $266.33 | 9 |
| Gilead Sciences, Inc. | $242.99 | 11 |
| Madrigal Pharmaceuticals | $36.59 | 2 |
| Aimmune Therapeutics, Inc. | $31.46 | 1 |
What the 2025 payments were for
- Food and Beverage$916.47 · 36 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Kenosha
- 1477750271
- 1710900667
- 1366453656
- 1477583359