James Alton Williams, MD
NPI 1316930837ActiveIndividual· Pediatrics, Pediatric Hematology-Oncology· Mesa, AZ
Pediatrics, Pediatric Hematology-Oncology (MD) in Mesa, Arizona, trained at Wayne State University School of Medicine (class of 1993). Enrolled in Medicare as practitioner - hematology. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1316930837 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 30, 2005 |
| Last updated in NPPES | Sep 13, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics, Pediatric Hematology-Oncology Primary | 2080P0207X | 333911 | AZ |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Arizona, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | James P. Williams · Owner/Operator | 1128a1 | Dec 20, 1998 | Mesa, AZ |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| 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 - Hematology (AZ) |
|---|
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Hematology |
| Secondary specialties | Pediatric Medicine |
Medical group
- Phoenix Children's HospitalPhoenix, AZ · 437 clinicians
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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