Douglas M. Phan, M.D.
NPI 1013073766ActiveIndividual· Otolaryngology· Modesto, CA
Otolaryngology (M.D.) in Modesto, California, trained at Stanford University School of Medicine (class of 1982). 321 Medicare patients in 2024, $78,117 paid; all of their 432 Part D prescriptions were generic. Glaxosmithkline, LLC. reported $47.22 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1013073766 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 28, 2006 |
| Last updated in NPPES | Jan 16, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology Primary | 207Y00000X | G51181 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Otolaryngology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 321 |
|---|---|
| Services billed | 815 across 19 procedure codes |
| Paid by Medicare | $78,117 |
Part D prescriptions in 2024
| Prescriptions (claims) | 432 · 485 30-day fills |
|---|---|
| Patients | 261 |
| Total drug cost | $6,880 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Otolaryngology |
Medical group
- Advanced Surgical AssociatesSan Jose, CA · 6 clinicians
Industry payments (Open Payments)
- 2025$47.22 · 2 payments from 1 company
- 2024$125.65 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $47.22 | 2 |
What the 2025 payments were for
- Food and Beverage$47.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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