Alfred B. Johnson, MD
NPI 1174508865ActiveIndividual· Surgery· Merced, CA
Surgery (MD) in Merced, California, trained at Georgetown University School of Medicine (class of 1987). 31 Medicare patients in 2024, $12,279 paid; nearly all of their 56 Part D prescriptions were generic (93%). Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $67.25 in all, mostly food and beverage.
Overview
| NPI | 1174508865 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Jul 21, 2025 |
| Certified by provider | Jul 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | G88950 | CA |
| Surgery | 208600000X | 184876 | NY |
| Surgery | 208600000X | 42860 | GA |
| Surgery | 208600000X | 19035 | MS |
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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 85 across 25 procedure codes |
| Paid by Medicare | $12,279 |
Part D prescriptions in 2024
| Prescriptions (claims) | 56 · 64 30-day fills |
|---|---|
| Patients | 23 |
| Total drug cost | $1,465 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | General Surgery |
Medical groups
- Crescent Wound Care IncModesto, CA · 30 clinicians
- Karthikeya Devireddy MD IncLos Banos, CA · 10 clinicians
- Yosemite Bone and Joint, Inc.Modesto, CA · 4 clinicians
Hospital affiliation
- Mercy Medical CenterMerced, CA
Industry payments (Open Payments)
- 2025$67.25 · 2 payments from 2 companies
- 2024$30.34 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $42.39 | 1 |
| Medtronic, Inc. | $24.86 | 1 |
What the 2025 payments were for
- Food and Beverage$67.25 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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