Jason L. Umphress, M.D.
NPI 1194741595ActiveIndividual· Internal Medicine, Gastroenterology· Woodland, CA
Internal Medicine, Gastroenterology (M.D.) with Dignity Health Medical Foundation, practicing in Woodland, California. Their prescriptions cost Medicare Part D more than their services did: $639,490 for 1,144 claims, against $79,490 paid for services in 2024. Aimmune Therapeutics, Inc. reported $24.32 in payments in 2025, mostly food and beverage. Lists Woodland Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1194741595 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 15, 2006 |
| Last updated in NPPES | Oct 30, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A64129 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 389 |
|---|---|
| Services billed | 892 across 35 procedure codes |
| Paid by Medicare | $79,490 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,144 · 1,871 30-day fills |
|---|---|
| Patients | 536 |
| Total drug cost | $639,490 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Dignity Health Medical FoundationFolsom, CA · 1,184 clinicians
Hospital affiliation
- Woodland Memorial HospitalWoodland, CA
Industry payments (Open Payments)
- 2025$24.32 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aimmune Therapeutics, Inc. | $24.32 | 1 |
What the 2025 payments were for
- Food and Beverage$24.32 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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