Stacy Dau Ly, M.D.
NPI 1649458795ActiveIndividual· Internal Medicine· Concord, CA
Internal Medicine (M.D.) in Concord, California, trained at George Washington University School of Medicine (class of 2006). In 2024 Medicare paid $63,662 for 315 patients, and Part D covered 360 of their prescriptions, 89% of them generic.
Overview
| NPI | 1649458795 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 31, 2008 |
| Last updated in NPPES | Jun 21, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A102438 | 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 | 315 |
|---|---|
| Services billed | 689 across 21 procedure codes |
| Paid by Medicare | $63,662 |
Part D prescriptions in 2024
| Prescriptions (claims) | 360 · 405 30-day fills |
|---|---|
| Patients | 120 |
| Total drug cost | $27,762 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Internal Medicine |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Concord · All internal medicine physicians in California