Diana V. Jao, MD
NPI 1780683789ActiveIndividual· Internal Medicine, Geriatric Medicine· San Mateo, CA
Internal Medicine, Geriatric Medicine (MD) in San Mateo, California, trained at Hahnemann University College of Medicine (class of 1988). Part D covered 5,135 prescriptions written in 2024, 86% of them generic.
Overview
| NPI | 1780683789 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 20, 2005 |
| Last updated in NPPES | May 9, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | G068273 | 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 - Internal Medicine (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 5,135 · 12,245 30-day fills |
|---|---|
| Patients | 517 |
| Total drug cost | $586,028 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Hahnemann University College of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Medical group
- County of San MateoSan Mateo, CA · 310 clinicians
Hospital affiliations
- Peninsula Medical CenterBurlingame, CA
- San Mateo Medical CenterSan Mateo, CA
- Stanford Health CareStanford, CA
Other facilities
- New Haven Home Health Services, Inc.Home health agency · Daly City, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Geriatric Medicine providers in San Mateo
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- 1770688848
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All Internal Medicine, Geriatric Medicine providers in California →