Perkin Michael Shiu, MD
NPI 1134375272ActiveIndividual· Internal Medicine, Cardiovascular Disease· Walnut Creek, CA
Internal Medicine, Cardiovascular Disease (MD) in Walnut Creek, California, trained at University of California, San Diego School of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $2,490,687 for 7,635 claims, against $632,959 paid for services in 2024. Boston Scientific Corporation was the largest of 26 companies reporting payments in 2025, $8,720 in all, mostly speaking and faculty fees.
Overview
| NPI | 1134375272 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 8, 2008 |
| Last updated in NPPES | Aug 11, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A89923 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,478 |
|---|---|
| Services billed | 11,336 across 77 procedure codes |
| Paid by Medicare | $632,959 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,635 · 20,807 30-day fills |
|---|---|
| Patients | 1,050 |
| Total drug cost | $2,490,687 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Kaiser Foundation Hospital - Oakland/RichmondOakland, CA
- San Ramon Regional Medical CenterSan Ramon, CA
Industry payments (Open Payments)
- 2025$8,720 · 95 payments from 26 companies
- 2024$4,414 · 105 payments from 30 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $5,508 | 13 |
| Aop Health US, LLC | $812.06 | 1 |
| Biotronik Inc. | $562.26 | 11 |
| Abbott Laboratories | $218.53 | 2 |
| Cvrx, Inc. | $157.06 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$5,000 · 1 payment
- Food and Beverage$3,720 · 94 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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