IndividualActive
Karen Horowitz, MD
NPI 1275552911 · Internal Medicine Physician · Cleveland, OH
Karen Horowitz, MD is a Internal Medicine Physician provider in Cleveland, OH (NPI 1275552911).
Provider details
- NPI number
- 1275552911
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 35-053418 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 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
11100 Euclid Ave
Cleveland, OH 44106-1716
Phone: (216) 844-8500
Street-level locationGet directions
Mailing address
24701 Euclid Ave
Euclid, OH 44117-1714
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2011-06-10
Frequently asked questions
- What is Karen Horowitz's NPI number?
- Karen Horowitz's National Provider Identifier (NPI) is 1275552911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Horowitz's specialty?
- Karen Horowitz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Horowitz located?
- Karen Horowitz's practice location on file with NPPES is 11100 Euclid Ave, Cleveland, OH 44106-1716.
- What is Karen Horowitz's phone number?
- The practice phone number listed in the NPPES registry for Karen Horowitz is (216) 844-8500.
- Is Karen Horowitz's NPI active?
- Yes — Karen Horowitz's NPI (1275552911) is active in the NPPES registry as of the last update on 2011-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.