William Lefferts, MD
NPI 1033177225 · Internal Medicine Physician · Cleveland, OH
William Lefferts, MD is a Internal Medicine Physician provider in Cleveland, OH (NPI 1033177225).
Provider details
- NPI number
- 1033177225
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35047781L (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2013-05-31
Frequently asked questions
- What is William Lefferts's NPI number?
- William Lefferts's National Provider Identifier (NPI) is 1033177225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lefferts's specialty?
- William Lefferts is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Lefferts located?
- William Lefferts's practice location on file with NPPES is 9500 Euclid Ave, Cleveland, OH 44195-0001.
- What is William Lefferts's phone number?
- The practice phone number listed in the NPPES registry for William Lefferts is (800) 223-2273.
- Is William Lefferts's NPI active?
- Yes — William Lefferts's NPI (1033177225) is active in the NPPES registry as of the last update on 2013-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.