Mazen Allouni, MD
NPI 1255070991 · Internal Medicine Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mazen Allouni, MD is a Internal Medicine Physician provider in Cleveland, OH (NPI 1255070991).
Provider details
- NPI number
- 1255070991
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 57.253763 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$309 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-01
- Last updated
- 2022-06-07
- Certified
- 2022-06-07
Frequently asked questions
- What is Mazen Allouni's NPI number?
- Mazen Allouni's National Provider Identifier (NPI) is 1255070991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mazen Allouni's specialty?
- Mazen Allouni is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mazen Allouni located?
- Mazen Allouni's practice location on file with NPPES is 2351 E 22nd St, Cleveland, OH 44115-3111.
- What is Mazen Allouni's phone number?
- The practice phone number listed in the NPPES registry for Mazen Allouni is (216) 861-6200.
- Does Mazen Allouni accept Medicare?
- Mazen Allouni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mazen Allouni's NPI active?
- Yes — Mazen Allouni's NPI (1255070991) is active in the NPPES registry as of the last update on 2022-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.