Melissa Zimel, MD
NPI 1245493147ActiveIndividual· Orthopaedic Surgery· San Francisco, CA
Orthopaedic Surgery (MD) in San Francisco, California, trained at Northwestern University Feinberg Medical School (class of 2008). 159 Medicare patients in 2024, $73,716 paid; nearly all of their 144 Part D prescriptions were generic (96%). Onkos Surgical, Inc. reported $9,124 in payments in 2025, mostly consulting fees.
Overview
| NPI | 1245493147 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 10, 2008 |
| Last updated in NPPES | Mar 17, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | A151643 | CA |
| Orthopaedic Surgery | 207X00000X | 268314 | NY |
| Orthopaedic Surgery | 207X00000X | 4301092927 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 159 |
|---|---|
| Services billed | 413 across 60 procedure codes |
| Paid by Medicare | $73,716 |
Part D prescriptions in 2024
| Prescriptions (claims) | 144 · 159 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $39,809 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Medical groups
- University of California San FranciscoSan Francisco, CA · 1,839 clinicians
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
Hospital affiliations
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Marinhealth Medical CenterGreenbrae, CA
- UCSF Medical CenterSan Francisco, CA
Other facilities
- Healthflex Home Health ServicesHome health agency · Oakland, CA
Industry payments (Open Payments)
- 2025$9,124 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Onkos Surgical, Inc. | $9,124 | 4 |
What the 2025 payments were for
- Consulting Fee$7,250 · 1 payment
- Travel and Lodging$1,577 · 1 payment
- Food and Beverage$297.76 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 153 orthopedic surgeons in San Francisco · All orthopedic surgeons in California