William Hartley Blakeslee III, WILLIAM BLAKESLEE PA
NPI 1306039490ActiveIndividual· Physician Assistant· Kalamazoo, MI
Physician Assistant (WILLIAM BLAKESLEE PA) with Kalamazoo Anesthesiology P C, practicing in Kalamazoo, Michigan. Their prescriptions cost Medicare Part D more than their services did: $190,462 for 2,230 claims, against $30,997 paid for services in 2024. Pfizer Inc. was the largest of 8 companies reporting payments in 2025, $650.65 in all, mostly food and beverage. Lists Bronson Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1306039490 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | WILLIAM BLAKESLEE PA |
| Sole proprietor | No |
| NPI issued | Aug 22, 2007 |
| Last updated in NPPES | Oct 31, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 5601005112 | MI |
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 - Physician Assistant (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 239 |
|---|---|
| Services billed | 1,298 across 14 procedure codes |
| Paid by Medicare | $30,997 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,230 · 2,658 30-day fills |
|---|---|
| Patients | 305 |
| Total drug cost | $190,462 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Kalamazoo Anesthesiology P CKalamazoo, MI · 135 clinicians
Hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI
Industry payments (Open Payments)
- 2025$650.65 · 25 payments from 8 companies
- 2024$223.21 · 12 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $189.51 | 5 |
| Collegium Pharmaceutical, Inc. | $151.74 | 9 |
| Eisai Inc. | $100.30 | 1 |
| Abbvie Inc. | $84.69 | 5 |
| Vertex Pharmaceuticals Incorporated | $48.67 | 2 |
What the 2025 payments were for
- Food and Beverage$650.65 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 180 physician assistants in Kalamazoo · All physician assistants in Michigan