Letitia Ann Horrigan, D.O.
NPI 1760622617ActiveIndividual· Internal Medicine· North Kingstown, RI
Opted out of Medicare from January 2026 to January 2028. Internal Medicine (D.O.) in North Kingstown, Rhode Island, trained at University of New England, College of Osteo Medicine (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $266,447 for 6,671 claims, against $76,749 paid for services in 2024. Novo Nordisk Inc was the largest of 11 companies reporting payments in 2025, $697.08 in all, mostly food and beverage.
Overview
| NPI | 1760622617 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Mar 4, 2009 |
| Last updated in NPPES | Aug 11, 2026 |
| Certified by provider | Aug 11, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | DO00680 | RI |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jan 1, 2026 – Jan 1, 2028 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 313 |
|---|---|
| Services billed | 1,324 across 28 procedure codes |
| Paid by Medicare | $76,749 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,671 · 16,132 30-day fills |
|---|---|
| Patients | 612 |
| Total drug cost | $266,447 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of New England, College of Osteo Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Osteopathic Manipulative Medicine |
Hospital affiliations
- Rhode Island HospitalProvidence, RI
- South County Hospital IncWakefield, RI
Other facilities
- South County Home HealthHome health agency · Wakefield, RI
Industry payments (Open Payments)
- 2025$697.08 · 32 payments from 11 companies
- 2024$1,226 · 61 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $202.89 | 8 |
| Glaxosmithkline, LLC. | $107.35 | 6 |
| Abbvie Inc. | $99.37 | 5 |
| Exact Sciences Corporation | $56.23 | 2 |
| Lilly USA, LLC | $49.43 | 2 |
What the 2025 payments were for
- Food and Beverage$697.08 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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