Diana P. Choles, MD
NPI 1588618896ActiveIndividual· Internal Medicine· Madison, WI
Internal Medicine (MD) in Madison, Wisconsin, trained at University of Minnesota Medical School (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $1,003,297 for 12,680 claims, against $101,384 paid for services in 2024.
Overview
| NPI | 1588618896 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 20, 2006 |
| Last updated in NPPES | Nov 5, 2020 |
| Certified by provider | Nov 5, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 36710-020 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 429 |
|---|---|
| Services billed | 2,164 across 47 procedure codes |
| Paid by Medicare | $101,384 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,680 · 24,570 30-day fills |
|---|---|
| Patients | 917 |
| Total drug cost | $1,003,297 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Dean Health Systems IncSun Prairie, WI · 1,159 clinicians
Hospital affiliations
- Ssm Health St Clare Hospital - BarabooBaraboo, WI
- Ssm Health St Mary's Hospital - JanesvilleJanesville, WI
- Ssm Health St Mary's Hospital - MadisonMadison, WI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
- Waupun Memorial HospitalWaupun, WI
Other facilities
- Aveanna Home HealthHome health agency · Madison, WI
- Interim Healthcare of WisconsinHome health agency · Madison, WI
- Ssm Health at Home Home Health-WisconsinHome health agency · Madison, WI
- Agrace HospicecareHospice · Madison, WI
- Ssm Health at Home HospiceHospice · Baraboo, WI
- Complete Care at Maple Grove LLCNursing home · Madison, 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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All 417 internal medicine physicians in Madison · All internal medicine physicians in Wisconsin