Ling Dan Twohig, DO
NPI 1750523684ActiveIndividual· Internal Medicine, Interventional Cardiology· Lebanon, IN
Internal Medicine, Interventional Cardiology (DO) in Lebanon, Indiana, trained at Touro Un College of Osteopathic Medicine, Vallejo (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $326,585 for 2,181 claims, against $54,724 paid for services in 2024. Alnylam Pharmaceuticals Inc. was the largest of 2 companies reporting payments in 2025, $165.07 in all, mostly food and beverage.
Overview
| NPI | 1750523684 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 24, 2009 |
| Last updated in NPPES | Oct 16, 2026 |
| Certified by provider | Oct 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 77847 | WI |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 02006049A | IN |
| General Practice | 208D00000X | OP 60100157 | WA |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 22007 | WI |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 22007-875 | 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 - Interventional Cardiology (AR); Practitioner - Cardiovascular Disease (Cardiology) (GA); Practitioner - Cardiovascular Disease (Cardiology) (IL); Practitioner - Cardiovascular Disease (Cardiology) (IN); Practitioner - Interventional Cardiology (MO); Practitioner - Interventional Cardiology (OH); Practitioner - Interventional Cardiology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 425 |
|---|---|
| Services billed | 852 across 43 procedure codes |
| Paid by Medicare | $54,724 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,181 · 5,371 30-day fills |
|---|---|
| Patients | 568 |
| Total drug cost | $326,585 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Touro Un College of Osteopathic Medicine, Vallejo |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology), Internal Medicine |
Medical groups
- Baptist Health Medical Group IncMadison, IN · 2,472 clinicians
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
- Porter Physician Services LLCValparaiso, IN · 99 clinicians
Hospital affiliations
- Baptist Health FloydNew Albany, IN
- Marshfield Medical CenterMarshfield, WI
- Marshfield Medical Center - WestonWeston, WI
- Northwest Health - PorterValparaiso, IN
- St Mary's Medical CenterBlue Springs, MO
Industry payments (Open Payments)
- 2025$165.07 · 3 payments from 2 companies
- 2024$20,054 · 76 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | $130.26 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $34.81 | 2 |
What the 2025 payments were for
- Food and Beverage$165.07 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records