Jonathan C. Jun, M.D.
NPI 1083751846ActiveIndividual· Internal Medicine, Pulmonary Disease· Baltimore, MD
Internal Medicine, Pulmonary Disease (M.D.) in Baltimore, Maryland, trained at University of Maryland School of Medicine (class of 2003). Mostly services rather than prescriptions: Medicare paid $30,390 for 305 patients in 2024, with only 46 Part D claims. Inspire Medical Systems, Inc. reported $146.37 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1083751846 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 31, 2007 |
| Last updated in NPPES | Sep 5, 2025 |
| Certified by provider | Sep 5, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | D66156 | MD |
| Internal Medicine, Pulmonary Disease | 207RP1001X | MD049196 | DC |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 205356 | 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 - Pulmonary Disease (DC); Practitioner - Pulmonary Disease (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 305 |
|---|---|
| Services billed | 418 across 17 procedure codes |
| Paid by Medicare | $30,390 |
Part D prescriptions in 2024
| Prescriptions (claims) | 46 · 53 30-day fills |
|---|---|
| Total drug cost | $15,388 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
- Johns Hopkins UniversityWashington, DC · 197 clinicians
Hospital affiliations
- Johns Hopkins Bayview Medical CenterBaltimore, MD
- Johns Hopkins Hospital, theBaltimore, MD
Industry payments (Open Payments)
- 2025$146.37 · 2 payments from 1 company
- 2024$261.22 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Inspire Medical Systems, Inc. | $146.37 | 2 |
What the 2025 payments were for
- Food and Beverage$146.37 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 160 pulmonologists in Baltimore · All pulmonologists in Maryland