Aaron Charniak, MD
NPI 1063827350ActiveIndividual· Hospitalist· Rockville, MD
Hospitalist (MD) with Medstar Medical Group II LLC and 1 other group, practicing in Rockville, Maryland. In 2024 Medicare paid $53,841 for 231 patients, and Part D covered 87 of their prescriptions, 89% of them generic. Lists Greater Baltimore Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1063827350 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 25, 2014 |
| Last updated in NPPES | Jul 27, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 289945 | NY |
| Internal Medicine | 207R00000X | D85926 | 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 - Hospitalist (DC); Practitioner - Hospitalist (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 231 |
|---|---|
| Services billed | 671 across 11 procedure codes |
| Paid by Medicare | $53,841 |
Part D prescriptions in 2024
| Prescriptions (claims) | 87 · 93 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $2,011 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical groups
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
- Greater Baltimore Medical CenterTowson, MD · 354 clinicians
Hospital affiliations
- Greater Baltimore Medical CenterBaltimore, MD
- Medstar Montgomery Medical CenterOlney, MD
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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