Catharine Ann Arnold, MD
NPI 1306909742ActiveIndividual· Internal Medicine, Rheumatology· Guilford, CT
Internal Medicine, Rheumatology (MD) in Guilford, Connecticut, trained at Yale University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $2,151,838 for 9,416 claims, against $176,718 paid for services in 2024.
Overview
| NPI | 1306909742 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 18, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 029833 | CT |
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 - Rheumatology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 429 |
|---|---|
| Services billed | 2,298 across 48 procedure codes |
| Paid by Medicare | $176,718 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,416 · 21,584 30-day fills |
|---|---|
| Patients | 880 |
| Total drug cost | $2,151,838 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Yale UniversityNew Haven, CT · 2,645 clinicians
- Northeast Medical Group IncBridgeport, CT · 1,360 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Lawrence & Memorial HospitalNew London, CT
- Middlesex HospitalMiddletown, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Elara CaringHome health agency · Rocky Hill, CT
- Middlesex Health Care at Home and Hospice ProgramHome health agency · Middletown, CT
- Yale New Haven Health - Health at HomeHome health agency · Milford, CT
- Home Care Plus, IncHospice · Guilford, CT
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Rheumatology providers in Guilford
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All Internal Medicine, Rheumatology providers in Connecticut →