Diana Carol McNulty, MD
NPI 1215900105ActiveIndividual· Internal Medicine· Freeport, IL
Internal Medicine (MD) in Freeport, Illinois, trained at Oregon Health Sciences University School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,219,628 for 12,027 claims, against $81,149 paid for services in 2024.
Overview
| NPI | 1215900105 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 10, 2006 |
| Last updated in NPPES | Jul 31, 2026 |
| Certified by provider | Jul 31, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036103840 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 651 |
|---|---|
| Services billed | 2,240 across 56 procedure codes |
| Paid by Medicare | $81,149 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,027 · 26,319 30-day fills |
|---|---|
| Patients | 731 |
| Total drug cost | $1,219,628 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Select Rehabilitation, LLCGlenview, IL · 2,046 clinicians
- Freeport Regional Health Care FoundationFreeport, IL · 92 clinicians
Hospital affiliation
- Fhn Memorial HospitalFreeport, IL
Other facilities
- Tri-State Home Healthcare, LLCHome health agency · Freeport, IL
- Fhn HospiceHospice · Freeport, IL
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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