Janne Huynh Dewing, M.D.
NPI 1699973297ActiveIndividual· Internal Medicine· Laguna Beach, CA
Internal Medicine (M.D.) in Laguna Beach, California, trained at University of California, Geffen School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $435,981 for 6,784 claims, against $144,952 paid for services in 2024. Lilly USA, LLC reported $124.37 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1699973297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 5, 2007 |
| Last updated in NPPES | Jan 5, 2024 |
| Certified by provider | Jan 5, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C52349 | CA |
| Internal Medicine | 207R00000X | 208683 | NY |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 282 |
|---|---|
| Services billed | 1,557 across 22 procedure codes |
| Paid by Medicare | $144,952 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,784 · 15,281 30-day fills |
|---|---|
| Patients | 488 |
| Total drug cost | $435,981 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence Mission HospitalMission Viejo, CA
Other facilities
- Acacia Hh&p of Southern California, LLCHome health agency · Irvine, CA
- Care Plus Home HealthHome health agency · Laguna Hills, CA
- Salus Home HealthHome health agency · Irvine, CA
Industry payments (Open Payments)
- 2025$124.37 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $124.37 | 1 |
What the 2025 payments were for
- Food and Beverage$124.37 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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