Ann Falor Callahan, MD
NPI 1093962847ActiveIndividual· Surgery· Fullerton, CA
Surgery (MD) in Fullerton, California, licensed in CA and MN, with an NPI issued in August 2008. Part D covered 105 prescriptions written in 2024, 95% of them generic. Intuitive Surgical, Inc. reported $5,641 in payments in 2025, mostly education.
Overview
| NPI | 1093962847 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 23, 2008 |
| Last updated in NPPES | Oct 27, 2026 |
| Certified by provider | Oct 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A112637 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Surgery | 208600000X | 60692 | MN |
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 - General Surgery (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 105 · 116 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $2,537 |
| Generic share | 95% of claims |
Industry payments (Open Payments)
- 2025$5,641 · 8 payments from 1 company
- 2024$639.16 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $5,641 | 8 |
What the 2025 payments were for
- Education$5,500 · 4 payments
- Travel and Lodging$113.31 · 3 payments
- Food and Beverage$28.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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