Adam Joseph Brownstein, MD
NPI 1164910949ActiveIndividual· Internal Medicine, Pulmonary Disease· Los Angeles, CA
Internal Medicine, Pulmonary Disease (MD) in Los Angeles, California, trained at Johns Hopkins University School of Medicine (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $63,586 for 57 claims, against $16,732 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 5 companies reporting payments in 2025, $3,404 in all, mostly food and beverage.
Overview
| NPI | 1164910949 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 26, 2018 |
| Last updated in NPPES | Jun 25, 2024 |
| Certified by provider | Jun 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | A175018 | CA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | A175018 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 84 |
|---|---|
| Services billed | 169 across 22 procedure codes |
| Paid by Medicare | $16,732 |
Part D prescriptions in 2024
| Prescriptions (claims) | 57 · 102 30-day fills |
|---|---|
| Patients | 23 |
| Total drug cost | $63,586 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
- Santa Monica - UCLA Med Ctr & Orthopaedic HospitalSanta Monica, CA
Industry payments (Open Payments)
- 2025$3,404 · 62 payments from 5 companies
- 2024$1,038 · 22 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $1,933 | 23 |
| Actelion Pharmaceuticals US, Inc. | $683.14 | 16 |
| United Therapeutics Corporation | $417.45 | 12 |
| Bayer Healthcare Pharmaceuticals Inc. | $335.94 | 10 |
| Liquidia Technologies, Inc. | $34.28 | 1 |
What the 2025 payments were for
- Food and Beverage$2,178 · 56 payments
- Travel and Lodging$1,199 · 5 payments
- Education$25.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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