Malcolm C. Johnson, MD
NPI 1003830316ActiveIndividual· Emergency Medicine· Walnut Creek, CA
Emergency Medicine (MD) in Walnut Creek, California, trained at University of Wisconsin School of Medicine (class of 2000). 525 Medicare patients in 2024, $88,855 paid; nearly all of their 161 Part D prescriptions were generic (96%). Kerecis Limited was the largest of 2 companies reporting payments in 2025, $116.69 in all, mostly food and beverage.
Overview
| NPI | 1003830316 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Jan 21, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A94962 | CA |
| Emergency Medicine, Emergency Medical Services | 207PE0004X | MD00046336 | WA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 525 |
|---|---|
| Services billed | 876 across 43 procedure codes |
| Paid by Medicare | $88,855 |
Part D prescriptions in 2024
| Prescriptions (claims) | 161 · 164 30-day fills |
|---|---|
| Patients | 111 |
| Total drug cost | $10,461 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Emergency Medicine |
Medical group
- Medamerica Physician Solutions PCWalnut Creek, CA · 28 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$116.69 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Kerecis Limited | $83.46 | 1 |
| Molnlycke Health Care US, LLC | $33.23 | 1 |
What the 2025 payments were for
- Food and Beverage$116.69 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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