Chester McBride Boltwood Jr., MD
NPI 1669415303ActiveIndividual· Internal Medicine, Interventional Cardiology· Modesto, CA
Internal Medicine, Interventional Cardiology (MD) in Modesto, California, trained at University of California, Davis School of Medicine (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $85,183 for 1,044 claims, against $1,808 paid for services in 2024. Abiomed was the largest of 2 companies reporting payments in 2025, $227.30 in all, mostly food and beverage.
Overview
| NPI | 1669415303 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 13, 2006 |
| Last updated in NPPES | Dec 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | G35042 | CA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | G35042 | 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 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 45 |
|---|---|
| Services billed | 58 across 10 procedure codes |
| Paid by Medicare | $1,808 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,044 · 3,285 30-day fills |
|---|---|
| Patients | 314 |
| Total drug cost | $85,183 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital MantecaManteca, CA
Industry payments (Open Payments)
- 2025$227.30 · 2 payments from 2 companies
- 2024$93.02 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $163.00 | 1 |
| Biosense Webster, Inc. | $64.30 | 1 |
What the 2025 payments were for
- Food and Beverage$227.30 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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