Caitlin O'Callaghan Reen, NP
NPI 1033391685ActiveIndividual· Nurse Practitioner, Adult Health· Boston, MA
Nurse Practitioner, Adult Health (NP) with Massachusetts General Physicians Organization Inc, practicing in Boston, Massachusetts. 78 Medicare patients in 2024, $8,272 paid; nearly all of their 64 Part D prescriptions were generic (97%). Edwards Lifesciences Corporation was the largest of 3 companies reporting payments in 2025, $58,003 in all, mostly consulting fees. Lists Brigham and Women's Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1033391685 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Dec 5, 2007 |
| Last updated in NPPES | Feb 18, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | 256018 | MA |
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 - Nurse Practitioner (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 78 |
|---|---|
| Services billed | 99 across 5 procedure codes |
| Paid by Medicare | $8,272 |
Part D prescriptions in 2024
| Prescriptions (claims) | 64 · 118 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $639.79 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Martha's Vineyard Hospital IncOak Bluffs, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- North Shore Medical Center -Salem, MA
Industry payments (Open Payments)
- 2025$58,003 · 116 payments from 3 companies
- 2024$24,797 · 75 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $53,725 | 107 |
| Abbott Laboratories | $4,143 | 8 |
| Medtronic, Inc. | $135.26 | 1 |
What the 2025 payments were for
- Consulting Fee$44,363 · 18 payments
- Travel and Lodging$11,110 · 49 payments
- Food and Beverage$2,531 · 49 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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