Louis Chang, MD
NPI 1235265364ActiveIndividual· Neurological Surgery· Bethesda, MD
Neurological Surgery (MD) in Bethesda, Maryland, trained at State University of New York Downstate Medical Center (class of 2004). Mostly services rather than prescriptions: Medicare paid $169,269 for 398 patients in 2024, with only 23 Part D claims. Medtronic, Inc. reported $77.29 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1235265364 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 25, 2007 |
| Last updated in NPPES | Jun 8, 2022 |
| Certified by provider | Jun 8, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | D74936 | MD |
| Neurological Surgery | 207T00000X | 301195 | 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 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 - Neurosurgery (DC); Practitioner - Neurosurgery (MD); Practitioner - Neurosurgery (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 398 |
|---|---|
| Services billed | 785 across 56 procedure codes |
| Paid by Medicare | $169,269 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23 · 23 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $120.56 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical groups
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
- Johns Hopkins UniversityWashington, DC · 197 clinicians
Hospital affiliations
- Holy Cross Germantown HospitalGermantown, MD
- Johns Hopkins Bayview Medical CenterBaltimore, MD
- Johns Hopkins Hospital, theBaltimore, MD
- Sibley Memorial HospitalWashington, DC
- Suburban HospitalBethesda, MD
Other facilities
- The Johns Hopkins Home Health Services, IncHome health agency · Baltimore, MD
Industry payments (Open Payments)
- 2025$77.29 · 1 payment from 1 company
- 2024$532.93 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $77.29 | 1 |
What the 2025 payments were for
- Food and Beverage$77.29 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Neurological Surgery providers in Bethesda
- 1578569240
- 1689642837
- 1972576387
- 1841055860
- 1992916894
- 1942405725
- 1598180564
- 1013143627
- 1558333849
- 1922159516
- 1104893015
- 1932176849