Patrick Michael Chiasson, MD
NPI 1861458754ActiveIndividual· Surgery· Tucson, AZ
Surgery (MD) with Northwest Allied Physicians LLC, practicing in Tucson, Arizona. 175 Medicare patients in 2024, $102,019 paid; nearly all of their 770 Part D prescriptions were generic (93%). Ethicon US, LLC was the largest of 6 companies reporting payments in 2025, $6,625 in all, mostly consulting fees. Lists Northern Cochise Community Hospital, Inc. and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1861458754 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 21, 2006 |
| Last updated in NPPES | Nov 18, 2021 |
| Certified by provider | Nov 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 29820 | AZ |
| Specialist | 174400000X | 29820 | AZ |
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 - General Surgery (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 175 |
|---|---|
| Services billed | 566 across 50 procedure codes |
| Paid by Medicare | $102,019 |
Part D prescriptions in 2024
| Prescriptions (claims) | 770 · 1,082 30-day fills |
|---|---|
| Patients | 202 |
| Total drug cost | $43,233 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | General Surgery |
Medical group
- Northwest Allied Physicians LLCSahuarita, AZ · 120 clinicians
Hospital affiliations
- Northern Cochise Community Hospital, Inc.Willcox, AZ
- Northwest Medical CenterTucson, AZ
- Northwest Medical Center SahuaritaSahuarita, AZ
- Oro Valley HospitalOro Valley, AZ
Industry payments (Open Payments)
- 2025$6,625 · 11 payments from 6 companies
- 2024$17,720 · 44 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ethicon US, LLC | $5,896 | 3 |
| Intuitive Surgical, Inc. | $426.09 | 4 |
| Medical Device Business Services, Inc. | $146.42 | 1 |
| Ethicon Inc. | $115.13 | 1 |
| Olympus America Inc. | $23.61 | 1 |
What the 2025 payments were for
- Consulting Fee$5,830 · 1 payment
- Food and Beverage$477.20 · 7 payments
- Travel and Lodging$317.83 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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