Melissa N. Loja, MD
NPI 1578826749ActiveIndividual· Surgery, Vascular Surgery· Fairfield, CA
Surgery, Vascular Surgery (MD) in Fairfield, California, trained at University of California, Davis School of Medicine (class of 2012). In 2024 Medicare paid $260,467 for 447 patients, and Part D covered 198 of their prescriptions, 76% of them generic. Shockwave Medical, Inc was the largest of 9 companies reporting payments in 2025, $144,670 in all, mostly travel and lodging.
Overview
| NPI | 1578826749 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 21, 2012 |
| Last updated in NPPES | Jun 24, 2021 |
| Certified by provider | Jun 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | A127991 | CA |
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 - Vascular Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 447 |
|---|---|
| Services billed | 1,865 across 117 procedure codes |
| Paid by Medicare | $260,467 |
Part D prescriptions in 2024
| Prescriptions (claims) | 198 · 303 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $42,915 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical groups
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
- Northbay Health Medical FoundationFairfield, CA · 213 clinicians
Hospital affiliations
- Northbay Medical CenterFairfield, CA
- Providence Queen of the Valley Medical CenterNapa, CA
Industry payments (Open Payments)
- 2025$144,670 · 73 payments from 9 companies
- 2024$41,526 · 41 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Shockwave Medical, Inc | $142,222 | 43 |
| Medtronic, Inc. | $1,246 | 12 |
| Reflow Medical Inc | $487.15 | 4 |
| Boston Scientific Corporation | $260.68 | 4 |
| Cook Medical LLC | $156.27 | 1 |
What the 2025 payments were for
- Travel and Lodging$73,758 · 20 payments
- Consulting Fee$68,738 · 22 payments
- Food and Beverage$2,174 · 31 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery, Vascular Surgery providers in Fairfield
- 1003266701