Santiago Andres Lozano Calderon, MD, PHD
NPI 1538436209ActiveIndividual· Orthopaedic Surgery· Boston, MA
Orthopaedic Surgery (MD, PHD) with Massachusetts General Physicians Organization Inc and 1 other group, practicing in Boston, Massachusetts. Mostly services rather than prescriptions: Medicare paid $134,924 for 255 patients in 2024, with only 18 Part D claims. Carbofix Orthopedics Inc was the largest of 7 companies reporting payments in 2025, $28,741 in all, mostly consulting fees. Lists Mainehealth Maine Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1538436209 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Nov 24, 2011 |
| Last updated in NPPES | Jun 5, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 250247 | 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 - Orthopedic Surgery (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 255 |
|---|---|
| Services billed | 635 across 86 procedure codes |
| Paid by Medicare | $134,924 |
Part D prescriptions in 2024
| Prescriptions (claims) | 18 · 22 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $1,495 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Medical groups
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
- The General Hospital CorporationBoston, MA · 1,267 clinicians
Hospital affiliations
- Mainehealth Maine Medical CenterPortland, ME
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- North Shore Medical Center -Salem, MA
Other facilities
- Mass General Brigham Home Care, IncHome health agency · Newton, MA
- Northeast Rehabilitation HospitalInpatient rehabilitation facility · Salem, NH
Industry payments (Open Payments)
- 2025$28,741 · 37 payments from 7 companies
- 2024$38,829 · 25 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Carbofix Orthopedics Inc | $16,977 | 7 |
| Onkos Surgical, Inc. | $7,687 | 4 |
| Illuminoss Medical, Inc. | $3,149 | 17 |
| Stryker Corporation | $370.82 | 5 |
| Integra Lifesciences Corporation | $250.14 | 2 |
What the 2025 payments were for
- Consulting Fee$20,108 · 14 payments
- Education$6,351 · 2 payments
- Food and Beverage$1,439 · 19 payments
- Travel and Lodging$597.49 · 1 payment
- Long term medical supply or device loan$245.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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