Dick M. Yip, MD
NPI 1851374631ActiveIndividual· Internal Medicine, Gastroenterology· Anaheim, CA
Internal Medicine, Gastroenterology (MD) in Anaheim, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $66,281 for 202 claims, against $25,842 paid for services in 2024. Gilead Sciences, Inc. was the largest of 10 companies reporting payments in 2025, $756.35 in all, mostly food and beverage.
Overview
| NPI | 1851374631 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Nov 25, 2005 |
| Last updated in NPPES | Jan 23, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G48821 | 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 | 135 |
|---|---|
| Services billed | 279 across 14 procedure codes |
| Paid by Medicare | $25,842 |
Part D prescriptions in 2024
| Prescriptions (claims) | 202 · 323 30-day fills |
|---|---|
| Patients | 77 |
| Total drug cost | $66,281 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Gastroenterology |
Medical group
- Oc GastrocareAnaheim, CA · 11 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$756.35 · 21 payments from 10 companies
- 2024$1,011 · 26 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $311.17 | 6 |
| Madrigal Pharmaceuticals | $121.08 | 1 |
| Janssen Biotech, Inc. | $94.41 | 4 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $91.42 | 4 |
| Regeneron Healthcare Solutions, Inc. | $32.47 | 1 |
What the 2025 payments were for
- Food and Beverage$756.35 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Anaheim
- 1831286822
- 1740443845
- 1760469209
- 1700903564
- 1467716993
- 1881032282
- 1770632234
- 1891478160
- 1043584394
- 1912606690
- 1952472862
- 1831293109
All Internal Medicine, Gastroenterology providers in California →