William Conan Mustain, M.D.
NPI 1760635890ActiveIndividual· Colon & Rectal Surgery· Oklahoma City, OK
Colon & Rectal Surgery (M.D.) in Oklahoma City, Oklahoma, trained at University of Mississippi School of Medicine (class of 2007). 223 Medicare patients in 2024, $121,941 paid; nearly all of their 237 Part D prescriptions were generic (95%). Intuitive Surgical, Inc. was the largest of 6 companies reporting payments in 2025, $7,119 in all, mostly education.
Overview
| NPI | 1760635890 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 3, 2008 |
| Last updated in NPPES | Mar 25, 2024 |
| Certified by provider | Mar 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | 42838 | OK |
| Surgery | 208600000X | R1900 | KY |
| Colon & Rectal Surgery | 208C00000X | E-9260 | AR |
| Surgery | 208600000X | E-9260 | AR |
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 - Colorectal Surgery (Proctology) (AR); Practitioner - Colorectal Surgery (Proctology) (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 223 |
|---|---|
| Services billed | 462 across 89 procedure codes |
| Paid by Medicare | $121,941 |
Part D prescriptions in 2024
| Prescriptions (claims) | 237 · 245 30-day fills |
|---|---|
| Patients | 108 |
| Total drug cost | $3,891 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Colorectal Surgery (Proctology) |
Medical group
- Mercy Clinic Oklahoma CommunitiesOklahoma City, OK · 649 clinicians
Hospital affiliations
- Mercy Hospital AdaAda, OK
- Mercy Hospital Ardmore, IncArdmore, OK
- Mercy Hospital Logan CountyGuthrie, OK
- Mercy Hospital Oklahoma City, IncOklahoma City, OK
Other facilities
- Mercy Home HealthHome health agency · Oklahoma City, OK
Industry payments (Open Payments)
- 2025$7,119 · 20 payments from 6 companies
- 2024$1,144 · 17 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $6,847 | 12 |
| Davol Inc. | $139.65 | 3 |
| Medtronic, Inc. | $47.75 | 2 |
| Boston Scientific Corporation | $40.77 | 1 |
| Acera Surgical, Inc. | $22.91 | 1 |
What the 2025 payments were for
- Education$4,300 · 2 payments
- Travel and Lodging$1,759 · 7 payments
- Food and Beverage$1,060 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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