Ewa B. Bak, M.D.
Opted out of Medicare from July 2026 to July 2028. Internal Medicine (M.D.) in Beachwood, Ohio, licensed in OH, with an NPI issued in June 2006. Their prescriptions cost Medicare Part D more than their services did: $418,109 for 5,912 claims, against $45,075 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 19 companies reporting payments in 2025, $1,039 in all, mostly food and beverage. Lists Cleveland Clinic and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1336185339 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2006 |
| Last updated in NPPES | Oct 2, 2026 |
| Certified by provider | Oct 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 35.120478 | OH |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jul 23, 2026 – Jul 23, 2028 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 266 |
|---|---|
| Services billed | 1,092 across 25 procedure codes |
| Paid by Medicare | $45,075 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,912 · 14,921 30-day fills |
|---|---|
| Patients | 898 |
| Total drug cost | $418,109 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Cleveland ClinicCleveland, OH
- Lake HealthConcord, OH
- Uh Cleveland Medical CenterCleveland, OH
- University Hospitals Ahuja Medical CenterBeachwood, OH
Other facilities
- University Hospital Home Care Services, IncHome health agency · Warrensville Hts, OH
Industry payments (Open Payments)
- 2025$1,039 · 60 payments from 19 companies
- 2024$1,445 · 61 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $192.22 | 14 |
| Amgen Inc. | $144.03 | 10 |
| Exact Sciences Corporation | $120.84 | 5 |
| Abbott Laboratories | $85.62 | 4 |
| Lilly USA, LLC | $80.80 | 5 |
What the 2025 payments were for
- Food and Beverage$1,039 · 60 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 75 internal medicine physicians in Beachwood · All internal medicine physicians in Ohio