Lynn R. Mack, MD
NPI 1326097213ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Omaha, NE
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Omaha, Nebraska, trained at University of Nebraska College of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $475,878 for 1,674 claims, against $36,829 paid for services in 2024. Abbott Laboratories was the largest of 7 companies reporting payments in 2025, $405.11 in all, mostly food and beverage.
Overview
| NPI | 1326097213 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 8, 2006 |
| Last updated in NPPES | Jun 23, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 18863 | NE |
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 (NE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 308 |
|---|---|
| Services billed | 594 across 14 procedure codes |
| Paid by Medicare | $36,829 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,674 · 3,687 30-day fills |
|---|---|
| Patients | 236 |
| Total drug cost | $475,878 |
| Generic share | 52% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Unmc PhysiciansBellevue, NE · 1,518 clinicians
Hospital affiliations
- Bellevue Medical CenterBellevue, NE
- Memorial Community Hospital & Health SystemBlair, NE
- St Lukes Regional Medical CenterSioux City, IA
- The Nebraska Medical CenterOmaha, NE
Industry payments (Open Payments)
- 2025$405.11 · 8 payments from 7 companies
- 2024$56.56 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $105.51 | 1 |
| Amgen Inc. | $104.67 | 1 |
| Ascendis Pharma Endocrinology Inc | $88.41 | 1 |
| Beta Bionics, Inc. | $32.07 | 2 |
| Sanofi-Aventis U.S. LLC | $30.29 | 1 |
What the 2025 payments were for
- Food and Beverage$405.11 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other endocrinologists in Omaha
- 1003020645
- 1023236213
- 1043290992
- 1073953089
- 1093156069
- 1093177578
- 1124057559
- 1184834392
- 1245280353
- 1356460547
- 1366678922
- 1376992446
All 39 endocrinologists in Omaha · All endocrinologists in Nebraska