Peter Cawood Butler, MD
NPI 1255366142ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Los Angeles, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with The Regents of the University of California, practicing in Los Angeles, California. Their prescriptions cost Medicare Part D more than their services did: $503,772 for 869 claims, against $8,100 paid for services in 2024. Vertex Pharmaceuticals Incorporated was the largest of 4 companies reporting payments in 2025, $20,613 in all, mostly consulting fees. Lists French Hospital Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1255366142 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Jun 8, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | C50362 | 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 - Endocrinology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 63 |
|---|---|
| Services billed | 116 across 4 procedure codes |
| Paid by Medicare | $8,100 |
Part D prescriptions in 2024
| Prescriptions (claims) | 869 · 2,022 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $503,772 |
| Generic share | 35% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, CA
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
Industry payments (Open Payments)
- 2025$20,613 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $20,564 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $18.85 | 1 |
| Lilly USA, LLC | $15.46 | 1 |
| Tandem Diabetes Care, Inc. | $14.40 | 1 |
What the 2025 payments were for
- Consulting Fee$20,564 · 2 payments
- Food and Beverage$29.86 · 2 payments
- Education$18.85 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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