Daniel William O'Neill, M.D.
NPI 1972578508ActiveIndividual· Internal Medicine· Putnam, CT
Internal Medicine (M.D.) in Putnam, Connecticut, trained at State University of New York at Stony Brook, School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $1,844,875 for 12,619 claims, against $95,778 paid for services in 2024. Pfizer Inc. was the largest of 19 companies reporting payments in 2025, $925.99 in all, mostly food and beverage.
Overview
| NPI | 1972578508 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 17, 2006 |
| Last updated in NPPES | Apr 8, 2026 |
| Certified by provider | Apr 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036878 | CT |
| Family Medicine | 207Q00000X | 036878 | CT |
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 - Family Practice (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 307 |
|---|---|
| Services billed | 1,387 across 55 procedure codes |
| Paid by Medicare | $95,778 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,619 · 26,882 30-day fills |
|---|---|
| Patients | 781 |
| Total drug cost | $1,844,875 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Day Kimball Medical Group IncPutnam, CT · 89 clinicians
Hospital affiliations
- Day Kimball HospitalPutnam, CT
- Umass Memorial Health - Harrington HospitalSouthbridge, MA
- Waterbury HospitalWaterbury, CT
Other facilities
- Day Kimball HomecareHome health agency · North Grosvenordale, CT
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
- Day Kimball HomecareHospice · North Grosvenordale, CT
- Westview Health Care CenterNursing home · Dayville, CT
Industry payments (Open Payments)
- 2025$925.99 · 41 payments from 19 companies
- 2024$1,002 · 51 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $180.45 | 9 |
| Axsome Therapeutics, Inc. | $94.17 | 3 |
| Novo Nordisk Inc | $83.31 | 4 |
| Glaxosmithkline, LLC. | $77.11 | 3 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $59.93 | 3 |
What the 2025 payments were for
- Food and Beverage$925.99 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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