OrganizationActive
Westside Hematology Oncology Inc
NPI 1376650606 · Hematology & Oncology Physician · Westlake, OH
Provider details
- NPI number
- 1376650606
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Marwan Massouh, President(440) 808-6500
- License
- 35056179M (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
29101 Health Campus Dr
Ste 260
Westlake, OH 44145-5266
Phone: (440) 808-6500
Fax: (440) 808-8865
Street-level locationGet directions
Mailing address
29101 Health Campus Dr
Westlake, OH 44145-5266
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2020-08-22
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.