Chi Chang Daniel Siao, MD
NPI 1083880538ActiveIndividual· Internal Medicine· Milton, MA
Internal Medicine (MD) with Associated Physicians of Harvard Medical Faculty Physicians at Beth Is, practicing in Milton, Massachusetts. In 2024 Medicare paid $25,078 for 134 patients, and Part D covered 121 of their prescriptions, 88% of them generic. Lists Beth Israel Deaconess Hospital - Milton and 1 other hospital as hospital affiliations.
Overview
| NPI | 1083880538 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 5, 2008 |
| Last updated in NPPES | May 13, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 234953 | MA |
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 - Internal Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 134 |
|---|---|
| Services billed | 274 across 7 procedure codes |
| Paid by Medicare | $25,078 |
Part D prescriptions in 2024
| Prescriptions (claims) | 121 · 129 30-day fills |
|---|---|
| Patients | 69 |
| Total drug cost | $9,496 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Associated Physicians of Harvard Medical Faculty Physicians at Beth IsMilton, MA · 565 clinicians
Hospital affiliations
- Beth Israel Deaconess Hospital - MiltonMilton, MA
- Beth Israel Deaconess Medical CenterBoston, MA
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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All 20 internal medicine physicians in Milton · All internal medicine physicians in Massachusetts