W. David Mello, M.D.
NPI 1376549733ActiveIndividual· Internal Medicine, Gastroenterology· Glendale, CA
Internal Medicine, Gastroenterology (M.D.) in Glendale, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1978). 988 Medicare patients in 2024, $232,823 paid; nearly all of their 1,532 Part D prescriptions were generic (90%). Abbvie Inc. reported $13.49 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1376549733 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 21, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
| Certified by provider | May 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G040719 | 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 | 988 |
|---|---|
| Services billed | 2,269 across 38 procedure codes |
| Paid by Medicare | $232,823 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,532 · 2,488 30-day fills |
|---|---|
| Patients | 779 |
| Total drug cost | $156,080 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Glendale Adventist Medical CenterGlendale, CA
- Usc Verdugo Hills HospitalGlendale, CA
Industry payments (Open Payments)
- 2025$13.49 · 1 payment from 1 company
- 2024$24.77 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $13.49 | 1 |
What the 2025 payments were for
- Food and Beverage$13.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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