Ujagger Singh Dhillon, M.D, F.A.C.G.
NPI 1518054808ActiveIndividual· Internal Medicine, Gastroenterology· Fresno, CA
Internal Medicine, Gastroenterology (M.D, F.A.C.G.) with Central California Faculty Medical Group Inc and 1 other group, practicing in Fresno, California. Their prescriptions cost Medicare Part D more than their services did: $432,467 for 3,006 claims, against $141,506 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $1,596 in all, mostly food and beverage. Lists Clovis Community Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1518054808 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D, F.A.C.G. |
| Sole proprietor | Yes |
| NPI issued | Oct 6, 2006 |
| Last updated in NPPES | Mar 28, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A36464 | 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 | 515 |
|---|---|
| Services billed | 1,422 across 50 procedure codes |
| Paid by Medicare | $141,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,006 · 5,325 30-day fills |
|---|---|
| Patients | 726 |
| Total drug cost | $432,467 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1972 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Central California Faculty Medical Group IncFresno, CA · 265 clinicians
- Ujagger Singh Dhillon MD Inc A Pro CorpFresno, CA · 4 clinicians
Hospital affiliations
- Clovis Community Medical CenterClovis, CA
- Community Regional Medical CenterFresno, CA
- Saint Agnes Medical CenterFresno, CA
Industry payments (Open Payments)
- 2025$1,596 · 82 payments from 11 companies
- 2024$983.36 · 56 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $578.79 | 28 |
| Janssen Biotech, Inc. | $265.06 | 12 |
| Madrigal Pharmaceuticals | $187.03 | 8 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $186.36 | 11 |
| Phathom Pharmaceuticals, Inc. | $103.61 | 9 |
What the 2025 payments were for
- Food and Beverage$1,596 · 82 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 gastroenterologists in Fresno · All gastroenterologists in California