Daniel Isaac, D.O.
NPI 1326486416ActiveIndividual· Internal Medicine, Hematology & Oncology· Grand Rapids, MI
Internal Medicine, Hematology & Oncology (D.O.) with McLaren Greater Lansing, practicing in Grand Rapids, Michigan. Their prescriptions cost Medicare Part D more than their services did: $3,841,007 for 702 claims, against $27,249 paid for services in 2024. Pfizer Inc. reported $1,451 in payments in 2024, mostly speaking and faculty fees. Lists Edward W Sparrow Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1326486416 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 11, 2013 |
| Last updated in NPPES | Mar 12, 2026 |
| Certified by provider | Mar 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 5101020392 | MI |
| Internal Medicine | 207R00000X | 5101020392 | MI |
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 - Hematology/Oncology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 189 |
|---|---|
| Services billed | 389 across 9 procedure codes |
| Paid by Medicare | $27,249 |
Part D prescriptions in 2024
| Prescriptions (claims) | 702 · 1,168 30-day fills |
|---|---|
| Patients | 149 |
| Total drug cost | $3,841,007 |
| Generic share | 63% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- McLaren Greater LansingLansing, MI · 99 clinicians
Hospital affiliations
- Edward W Sparrow HospitalLansing, MI
- McLaren FlintFlint, MI
- McLaren Greater LansingLansing, MI
- University of Michigan Health - Sparrow EatonCharlotte, MI
Other facilities
- McLaren Home HealthHome health agency · Lansing, MI
Industry payments (Open Payments)
- 2024$1,451 · 2 payments from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $1,451 | 2 |
What the 2024 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,440 · 1 payment
- Education$11.33 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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