Patrick A. Siaw, M.D.
NPI 1922039213ActiveIndividual· Internal Medicine· Buffalo, NY
Internal Medicine (M.D.) with Mobile Physician Services PLLC and 2 other groups, practicing in Buffalo, New York. Their prescriptions cost Medicare Part D more than their services did: $914,699 for 11,185 claims, against $73,587 paid for services in 2024. Otsuka America Pharmaceutical, Inc. reported $70.69 in payments in 2024, mostly food and beverage. Lists Kaleida Health and 1 other hospital as hospital affiliations.
Overview
| NPI | 1922039213 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Dec 7, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 211163 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 209 |
|---|---|
| Services billed | 881 across 9 procedure codes |
| Paid by Medicare | $73,587 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,185 · 11,295 30-day fills |
|---|---|
| Patients | 361 |
| Total drug cost | $914,699 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Mobile Physician Services PLLCBuffalo, NY · 110 clinicians
- Physician Mobile Medical Care PCBuffalo, NY · 106 clinicians
- Partners Medical Group PLLCOrchard Park, NY · 33 clinicians
Hospital affiliations
- Kaleida HealthBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Other facilities
- Hospice Buffalo IncHospice · Cheektowaga, NY
- Beechwood HomesNursing home · Getzville, NY
- Greenfield Health & Rehab CenterNursing home · Lancaster, NY
- Humboldt House Rehabilitation and Nursing CenterNursing home · Buffalo, NY
- McAuley ResidenceNursing home · Kenmore, NY
- Mercy Hospital Skilled Nursing FacilityNursing home · Lackawanna, NY
Industry payments (Open Payments)
- 2024$70.69 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $70.69 | 1 |
What the 2024 payments were for
- Food and Beverage$70.69 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 320 internal medicine physicians in Buffalo · All internal medicine physicians in New York