Michael Paul Sherman, M.D., PHD
NPI 1164643359ActiveIndividual· Internal Medicine, Hematology & Oncology· Walnut Creek, CA
Internal Medicine, Hematology & Oncology (M.D., PHD) in Walnut Creek, California, trained at State University of New York at Stony Brook, School of Medicine (class of 1994). In 2024 Medicare paid $8,120,740 for 800 patients, and Part D covered 1,637 of their prescriptions, 31% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 73 companies reporting payments in 2025, $9,269 in all, mostly food and beverage.
Overview
| NPI | 1164643359 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PHD |
| Sole proprietor | No |
| NPI issued | May 2, 2007 |
| Last updated in NPPES | Sep 23, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G83108 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 800 |
|---|---|
| Services billed | 425,291 across 152 procedure codes |
| Paid by Medicare | $8,120,740 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,637 · 2,052 30-day fills |
|---|---|
| Patients | 206 |
| Total drug cost | $10,533,340 |
| Generic share | 31% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Michael P Sherman MD PHD A Medical CorporationWalnut Creek, CA · 14 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$9,269 · 460 payments from 73 companies
- 2024$8,913 · 448 payments from 62 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $773.36 | 57 |
| Janssen Biotech, Inc. | $680.47 | 35 |
| Daiichi Sankyo Inc. | $465.16 | 21 |
| Merck Sharp & Dohme LLC | $442.83 | 16 |
| Pfizer Inc. | $407.51 | 24 |
What the 2025 payments were for
- Food and Beverage$9,227 · 458 payments
- Education$41.69 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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