Melissa Ann Frederick, M.D.
NPI 1033238076ActiveIndividual· Internal Medicine· Millbrae, CA
Internal Medicine (M.D.) in Millbrae, California, trained at Medical College of Ohio (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $671,295 for 11,099 claims, against $231,006 paid for services in 2024.
Overview
| NPI | 1033238076 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 29, 2007 |
| Last updated in NPPES | Feb 21, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A116626 | CA |
| Internal Medicine | 207R00000X | 4301084237 | MI |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 292 |
|---|---|
| Services billed | 2,548 across 12 procedure codes |
| Paid by Medicare | $231,006 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,099 · 11,249 30-day fills |
|---|---|
| Patients | 230 |
| Total drug cost | $671,295 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Medical College of Ohio |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiac Electrophysiology |
Medical group
- Acn Medical Group IncMillbrae, CA · 2 clinicians
Other facilities
- Opo Health, LLCHome health agency · San Mateo, CA
- Courtyard Care CenterNursing home · San Jose, CA
- Devonshire Oaks Nursing CenterNursing home · Redwood City, CA
- The Villas at Saratoga Skilled Nsg & Assisted LvgNursing home · Saratoga, CA
- Webster HouseNursing home · Palo Alto, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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