Aaron C. Baltz, MD
NPI 1467499277ActiveIndividual· Internal Medicine, Gastroenterology· Milwaukee, WI
Internal Medicine, Gastroenterology (MD) in Milwaukee, Wisconsin, trained at Medical College of Wisconsin (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $727,193 for 2,245 claims, against $84,388 paid for services in 2024.
Overview
| NPI | 1467499277 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 1, 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 | 49198-20 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 485 |
|---|---|
| Services billed | 1,071 across 42 procedure codes |
| Paid by Medicare | $84,388 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,245 · 4,714 30-day fills |
|---|---|
| Patients | 990 |
| Total drug cost | $727,193 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Gi Associates LLCMilwaukee, WI · 55 clinicians
- Gastroenterology Specialists SCWauwatosa, WI · 30 clinicians
- Wisconsin Health FundMilwaukee, WI · 28 clinicians
- Milwaukee Gi Specialists SCWauwatosa, WI · 15 clinicians
Hospital affiliations
- Ascension Se Wisconsin HospitalMilwaukee, WI
- Waukesha Memorial HospitalWaukesha, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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