Liana K. Billings, MD, MMSC
NPI 1457528101ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Skokie, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD, MMSC) in Skokie, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,204,815 for 2,910 claims, against $20,932 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $45,071 in all, mostly consulting fees.
Overview
| NPI | 1457528101 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MMSC |
| Sole proprietor | No |
| NPI issued | May 13, 2008 |
| Last updated in NPPES | Feb 19, 2021 |
| Certified by provider | Feb 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036.119120 | IL |
| Internal Medicine | 207R00000X | 235777 | MA |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 235777 | MA |
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 - Endocrinology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 143 |
|---|---|
| Services billed | 341 across 18 procedure codes |
| Paid by Medicare | $20,932 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,910 · 7,479 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $1,204,815 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Swedish HospitalChicago, IL
Industry payments (Open Payments)
- 2025$45,071 · 37 payments from 5 companies
- 2024$41,530 · 22 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $20,606 | 13 |
| Eli Lilly and Company | $18,133 | 15 |
| Novo Nordisk As | $5,773 | 4 |
| Amgen Inc. | $516.22 | 4 |
| Mannkind Corporation | $42.50 | 1 |
What the 2025 payments were for
- Consulting Fee$37,780 · 8 payments
- Travel and Lodging$5,701 · 14 payments
- Food and Beverage$1,547 · 14 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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