Robert M. Gullberg, MD
NPI 1669402541ActiveIndividual· Internal Medicine, Infectious Disease· Racine, WI
Internal Medicine, Infectious Disease (MD) with Ascension Medical Group-Southeast Wisconsin Inc, practicing in Racine, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $1,374,412 for 14,069 claims, against $107,961 paid for services in 2024. Exact Sciences Corporation was the largest of 4 companies reporting payments in 2025, $113.17 in all, mostly food and beverage. Lists Ascension All Saints Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1669402541 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 4, 2006 |
| Last updated in NPPES | Jun 18, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 27459 | WI |
| Internal Medicine | 207R00000X | 27459 | 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 - Infectious Disease (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 442 |
|---|---|
| Services billed | 1,809 across 16 procedure codes |
| Paid by Medicare | $107,961 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,069 · 29,092 30-day fills |
|---|---|
| Patients | 924 |
| Total drug cost | $1,374,412 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ascension Medical Group-Southeast Wisconsin IncBrookfield, WI · 545 clinicians
Hospital affiliations
- Ascension All Saints HospitalRacine, WI
- Ascension Se Wisconsin HospitalMilwaukee, WI
- Aurora Medical Center KenoshaKenosha, WI
Other facilities
- Ascension at HomeHome health agency · Milwaukee, WI
- Aurora at HomeHome health agency · Milwaukee, WI
- Hannah Home Health CareHome health agency · Waukesha, WI
- Hospice AllianceHospice · Pleasant Prairie, WI
Industry payments (Open Payments)
- 2025$113.17 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $50.36 | 2 |
| Gilead Sciences, Inc. | $26.77 | 1 |
| Paratek Pharmaceuticals, Inc. | $19.16 | 1 |
| Insmed, Inc. | $16.88 | 1 |
What the 2025 payments were for
- Food and Beverage$113.17 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records