Mary Elizabeth Callahan, M.D.
NPI 1942629803ActiveIndividual· Internal Medicine, Hospice and Palliative Medicine· New York, NY
Internal Medicine, Hospice and Palliative Medicine (M.D.) with Trustees of Columbia University in the City of New York, practicing in New York, New York. In 2024 Medicare paid $30,583 for 105 patients, and Part D covered 188 of their prescriptions, 87% of them generic. Lists New York-Presbyterian Hospital as a hospital affiliation.
Overview
| NPI | 1942629803 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 8, 2014 |
| Last updated in NPPES | Jul 2, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hospice and Palliative Medicine Primary | 207RH0002X | 299233 | NY |
| Internal Medicine | 207R00000X | MD464097 | PA |
| Internal Medicine | 207R00000X | 299233 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hospice/Palliative Care (NY); Practitioner - Internal Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 105 |
|---|---|
| Services billed | 262 across 11 procedure codes |
| Paid by Medicare | $30,583 |
Part D prescriptions in 2024
| Prescriptions (claims) | 188 · 219 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $11,957 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hospice/Palliative Care |
| Telehealth | Offers telehealth |
Medical group
- Trustees of Columbia University in the City of New YorkNew York, NY · 2,296 clinicians
Hospital affiliation
- New York-Presbyterian HospitalNew York, NY
Other facilities
- M J H S Hospice and Palliative Care, IncHospice · New York, NY
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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