Thomas Duane Dieringer, M.D.
NPI 1316393671ActiveIndividual· Internal Medicine, Infectious Disease· Palo Alto, CA
Internal Medicine, Infectious Disease (M.D.) with Stanford Health Care, practicing in Palo Alto, California. 257 Medicare patients in 2024, $73,329 paid; nearly all of their 204 Part D prescriptions were generic (95%). Lists Stanford Health Care as a hospital affiliation.
Overview
| NPI | 1316393671 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 5, 2016 |
| Last updated in NPPES | Apr 28, 2024 |
| Certified by provider | Apr 28, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A162050 | CA |
| Internal Medicine | 207R00000X | A162050 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 257 |
|---|---|
| Services billed | 628 across 17 procedure codes |
| Paid by Medicare | $73,329 |
Part D prescriptions in 2024
| Prescriptions (claims) | 204 · 369 30-day fills |
|---|---|
| Patients | 48 |
| Total drug cost | $41,293 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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