Ewa B Bak, M.D.
Internal Medicine · Beachwood, OH
At a glance
29525 Chagrin Blvd Ste 120, Beachwood, OH 44122-4601
NPPES record updated Oct 2, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
This clinician has a currently effective opt-out record in the imported CMS file. Ask the practice about payment arrangements before booking.
- Effective Jul 23, 2026 through Jul 23, 2028
Source: Opt Out Affidavits : 2026-08-01 · Reporting period: 2026-08-01 to 2026-08-31 · Published Sep 21, 2026.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
29525 Chagrin Blvd Ste 120Beachwood, OH 44122-4601
Additional reported practice locations
1611 S Green Rd Ste 260Cleveland, OH 441214192
Phone: 2162972059 1401 Harrodsburg Rd
Suite B-160
Lexington, KY 405043751
Phone: 8592764486
Fax: 8592779164
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1999
- CMS specialties
- Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Reported hospital affiliations
- Cleveland Clinic Cleveland, OH
- Lake Health Concord, OH
- Uh Cleveland Medical Center Cleveland, OH
- University Hospitals Ahuja Medical Center Beachwood, OH
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $1,039.43 |
Reporting companies
| Company | Amount |
|---|---|
| ASTRAZENECA PHARMACEUTICALS LP | $192.22 |
| AMGEN INC. | $144.03 |
| EXACT SCIENCES CORPORATION | $120.84 |
| ABBOTT LABORATORIES | $85.62 |
| LILLY USA, LLC | $80.80 |
| PFIZER INC. | $79.45 |
| CORCEPT THERAPEUTICS | $47.68 |
| GLAXOSMITHKLINE, LLC. | $41.41 |
| Other reporting companies | $247.38 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Internal Medicine
- Taxonomy code
- 207R00000X
- Enumeration date
- Jun 20, 2006
- Record updated
- Oct 2, 2026
More registry details
- Provider type
- Individual · Type 1
- Other reported name
- EWA BAK LEWIS
- Reported credentials
- M.D.
Reported taxonomies and licenses
207R00000X · Primary
License reported: 35.120478 OH
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
29525 Chagrin Blvd Ste 120Beachwood, OH 44122-4601
- Phone
- (440) 652-8250
- Fax
- (440) 560-8531
Mailing address
29525 CHAGRIN BLVD STE 120BEACHWOOD, OH 441224601
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue