Michael John Schierman, M.D.
NPI 1427128131ActiveIndividual· Family Medicine· Danville, CA
Family Medicine (M.D.) with John Muir Physician Network, practicing in Danville, California. Their prescriptions cost Medicare Part D more than their services did: $194,728 for 3,935 claims, against $63,716 paid for services in 2024. Novo Nordisk Inc was the largest of 16 companies reporting payments in 2025, $2,006 in all, mostly food and beverage. Lists John Muir Medical Center - Walnut Creek Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1427128131 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 9, 2006 |
| Last updated in NPPES | Dec 28, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A48145 | CA |
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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 343 |
|---|---|
| Services billed | 7,415 across 29 procedure codes |
| Paid by Medicare | $63,716 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,935 · 9,244 30-day fills |
|---|---|
| Patients | 468 |
| Total drug cost | $194,728 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Stanford Health CareStanford, CA
Other facilities
- John Muir Home Health ServicesHome health agency · Concord, CA
- Lifecare Solutions Palliative and HospiceHospice · Dublin, CA
Industry payments (Open Payments)
- 2025$2,006 · 67 payments from 16 companies
- 2024$1,879 · 55 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $570.91 | 15 |
| Glaxosmithkline, LLC. | $258.57 | 8 |
| Exact Sciences Corporation | $228.80 | 6 |
| Astrazeneca Pharmaceuticals LP | $204.08 | 7 |
| Pfizer Inc. | $186.37 | 6 |
What the 2025 payments were for
- Food and Beverage$2,006 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 family medicine physicians in Danville · All family medicine physicians in California