Nalini M. Guda, MD
NPI 1750358420ActiveIndividual· Internal Medicine, Gastroenterology· Milwaukee, WI
Internal Medicine, Gastroenterology (MD) with Gi Associates LLC, practicing in Milwaukee, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $424,502 for 924 claims, against $80,727 paid for services in 2024. Olympus America Inc. was the largest of 4 companies reporting payments in 2025, $11,886 in all, mostly consulting fees. Lists Aurora Lakeland Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1750358420 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 2, 2006 |
| Last updated in NPPES | Jan 26, 2026 |
| Certified by provider | Jan 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 40326-20 | 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 | 436 |
|---|---|
| Services billed | 986 across 55 procedure codes |
| Paid by Medicare | $80,727 |
Part D prescriptions in 2024
| Prescriptions (claims) | 924 · 1,602 30-day fills |
|---|---|
| Patients | 446 |
| Total drug cost | $424,502 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Gi Associates LLCMilwaukee, WI · 55 clinicians
Hospital affiliations
- Aurora Lakeland Medical CenterElkhorn, WI
- Aurora Medical Center - SummitSummit, WI
- Aurora St Lukes Medical CenterMilwaukee, WI
- West Allis Memorial HospitalWest Allis, WI
Industry payments (Open Payments)
- 2025$11,886 · 11 payments from 4 companies
- 2024$11,509 · 14 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus America Inc. | $10,178 | 5 |
| Medtronic, Inc. | $1,250 | 1 |
| Cook Medical LLC | $370.10 | 4 |
| Boston Scientific Corporation | $87.63 | 1 |
What the 2025 payments were for
- Consulting Fee$7,460 · 1 payment
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3,930 · 3 payments
- Food and Beverage$496.01 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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