Jenny Daci Yang, MD
NPI 1700021987ActiveIndividual· Internal Medicine, Gastroenterology· San Jose, CA
Internal Medicine, Gastroenterology (MD) with San Jose Gastroenterology, Inc., practicing in San Jose, California. Their prescriptions cost Medicare Part D more than their services did: $292,337 for 1,048 claims, against $76,165 paid for services in 2024. 3-D Matrix, Inc. was the largest of 6 companies reporting payments in 2025, $409.68 in all, mostly food and beverage. Lists Santa Clara Valley Medical Center as a hospital affiliation.
Overview
| NPI | 1700021987 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 2, 2008 |
| Last updated in NPPES | Nov 7, 2023 |
| Certified by provider | Nov 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A119192 | 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 | 274 |
|---|---|
| Services billed | 892 across 37 procedure codes |
| Paid by Medicare | $76,165 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,048 · 1,336 30-day fills |
|---|---|
| Patients | 514 |
| Total drug cost | $292,337 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- San Jose Gastroenterology, Inc.San Jose, CA · 11 clinicians
Hospital affiliation
- Santa Clara Valley Medical CenterSan Jose, CA
Industry payments (Open Payments)
- 2025$409.68 · 10 payments from 6 companies
- 2024$142.41 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| 3-D Matrix, Inc. | $235.42 | 2 |
| Abbvie Inc. | $93.60 | 4 |
| Janssen Biotech, Inc. | $22.36 | 1 |
| Braintree Laboratories, Inc. | $20.66 | 1 |
| Pfizer Inc. | $18.84 | 1 |
What the 2025 payments were for
- Food and Beverage$409.68 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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