Denise A. Yun, MD
NPI 1770655508ActiveIndividual· Internal Medicine· Berkeley, CA
Internal Medicine (MD) in Berkeley, California, trained at New York Medical College (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $277,931 for 3,134 claims, against $50,062 paid for services in 2024. Lilly USA, LLC reported $19.69 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1770655508 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 15, 2006 |
| Last updated in NPPES | Dec 23, 2025 |
| Certified by provider | Dec 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A73522 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 356 |
|---|---|
| Services billed | 1,637 across 50 procedure codes |
| Paid by Medicare | $50,062 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,134 · 3,973 30-day fills |
|---|---|
| Patients | 448 |
| Total drug cost | $277,931 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- One Medical Group IncSan Jose, CA · 331 clinicians
- Regents Univ of California UCSFSan Francisco, CA · 283 clinicians
- Marin Community ClinicNovato, CA · 30 clinicians
Hospital affiliations
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Marinhealth Medical CenterGreenbrae, CA
- Novato Community HospitalNovato, CA
Other facilities
- Sutter Care at HomeHome health agency · Novato, CA
Industry payments (Open Payments)
- 2024$19.69 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $19.69 | 1 |
What the 2024 payments were for
- Food and Beverage$19.69 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 internal medicine physicians in Berkeley · All internal medicine physicians in California