David Stanley Shields, MD
NPI 1578671608ActiveIndividual· Internal Medicine, Gastroenterology· Stanford, CA
Internal Medicine, Gastroenterology (MD) in Stanford, California, trained at University of California, San Francisco School of Medicine (class of 1978). Mostly services rather than prescriptions: Medicare paid $9,304 for 52 patients in 2024, with only 31 Part D claims. Capsovision, Inc. reported $22,026 in payments in 2025, mostly consulting fees.
Overview
| NPI | 1578671608 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 28, 2006 |
| Last updated in NPPES | Apr 16, 2024 |
| Certified by provider | Apr 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G43100 | CA |
| Internal Medicine | 207R00000X | G43100 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 52 |
|---|---|
| Services billed | 60 across 13 procedure codes |
| Paid by Medicare | $9,304 |
Part D prescriptions in 2024
| Prescriptions (claims) | 31 · 49 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $8,245 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Gastroenterology |
Medical group
- County of San MateoSan Mateo, CA · 310 clinicians
Hospital affiliation
- San Mateo Medical CenterSan Mateo, CA
Industry payments (Open Payments)
- 2025$22,026 · 5 payments from 1 company
- 2024$55,550 · 6 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Capsovision, Inc. | $22,026 | 5 |
What the 2025 payments were for
- Consulting Fee$22,000 · 4 payments
- Food and Beverage$26.13 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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