Siamak Milanchi, M.D.
NPI 1083829956ActiveIndividual· Colon & Rectal Surgery· Irvine, CA
Colon & Rectal Surgery (M.D.) in Irvine, California, licensed in CA, with an NPI issued in May 2007. In 2024 Medicare paid $38,764 for 127 patients, and Part D covered 110 of their prescriptions, 88% of them generic. Baxter Healthcare reported $33.45 in payments in 2024, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian as a hospital affiliation.
Overview
| NPI | 1083829956 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 13, 2007 |
| Last updated in NPPES | Oct 22, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | A92723 | CA |
| Surgery | 208600000X | A92723 | CA |
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 - Colorectal Surgery (Proctology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 127 |
|---|---|
| Services billed | 299 across 31 procedure codes |
| Paid by Medicare | $38,764 |
Part D prescriptions in 2024
| Prescriptions (claims) | 110 · 114 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $4,123 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Colorectal Surgery (Proctology) |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
- 2024$33.45 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Baxter Healthcare | $33.45 | 1 |
What the 2024 payments were for
- Food and Beverage$33.45 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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