David A. Chang, M.D.
NPI 1790831410ActiveIndividual· Obstetrics & Gynecology· Lutherville, MD
Obstetrics & Gynecology (M.D.) in Lutherville, Maryland, licensed in MD, with an NPI issued in January 2007. Mostly services rather than prescriptions: Medicare paid $1,592 for 12 patients in 2024, with only 24 Part D claims. Galderma Laboratories, L.P. was the largest of 2 companies reporting payments in 2025, $147.40 in all, mostly food and beverage.
Overview
| NPI | 1790831410 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 26, 2007 |
| Last updated in NPPES | Sep 16, 2025 |
| Certified by provider | Sep 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | D0067401 | MD |
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 - Obstetrics/Gynecology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 34 across 10 procedure codes |
| Paid by Medicare | $1,592 |
Part D prescriptions in 2024
| Prescriptions (claims) | 24 · 47 30-day fills |
|---|---|
| Total drug cost | $777.86 |
| Generic share | 92% of claims |
Industry payments (Open Payments)
- 2025$147.40 · 2 payments from 2 companies
- 2024$136.08 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Galderma Laboratories, L.P. | $125.48 | 1 |
| Mayne Pharma Commercial LLC | $21.92 | 1 |
What the 2025 payments were for
- Food and Beverage$147.40 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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