Joyce Ann O'Shaughnessy, MD
NPI 1790727709ActiveIndividual· Internal Medicine, Medical Oncology· Dallas, TX
Internal Medicine, Medical Oncology (MD) in Dallas, Texas, trained at Yale University School of Medicine (class of 1982). 858 Medicare patients in 2024, $2,836,128 paid; nearly all of their 2,112 Part D prescriptions were generic (91%). Merck Sharp & Dohme LLC was the largest of 23 companies reporting payments in 2025, $132,490 in all, mostly consulting fees.
Overview
| NPI | 1790727709 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Apr 24, 2025 |
| Certified by provider | Apr 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | K3366 | TX |
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 - Medical Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 858 |
|---|---|
| Services billed | 153,554 across 192 procedure codes |
| Paid by Medicare | $2,836,128 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,112 · 4,639 30-day fills |
|---|---|
| Patients | 393 |
| Total drug cost | $2,028,524 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Texas Oncology PAPlano, TX · 1,014 clinicians
Hospital affiliations
- Baylor Scott & White Medical Center GrapevineGrapevine, TX
- Baylor Scott & White Medical Center PlanoPlano, TX
- Baylor Scott and White Medical Center Lake PointeRowlett, TX
- Baylor University Medical CenterDallas, TX
- Hunt Regional Medical CenterGreenville, TX
Other facilities
- Baylor Scott & White Institute for RehabilitationInpatient rehabilitation facility · Dallas, TX
Industry payments (Open Payments)
- 2025$132,490 · 131 payments from 23 companies
- 2024$117,051 · 102 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $28,991 | 14 |
| Eli Lilly and Company | $22,328 | 25 |
| Pfizer Inc. | $9,502 | 6 |
| Astrazeneca Pharmaceuticals LP | $8,541 | 7 |
| Stemline Therapeutics Inc. | $7,433 | 9 |
What the 2025 payments were for
- Consulting Fee$96,690 · 57 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$19,925 · 4 payments
- Travel and Lodging$12,815 · 18 payments
- Food and Beverage$2,060 · 40 payments
- Long term medical supply or device loan$999.96 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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