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Leonard Oneill, MD
NPI 1215907787 · Internal Medicine Physician · Kalamazoo, MI
Leonard Oneill, MD is a Internal Medicine Physician provider in Kalamazoo, MI (NPI 1215907787).
Provider details
- NPI number
- 1215907787
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301046136 (MI)
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
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
535 S Burdick St
Kalamazoo, MI 49007-5294
Phone: (269) 341-8822
Fax: (269) 341-7518
Street-level locationGet directions
Mailing address
535 S Burdick St
Kalamazoo, MI 49007-5294
Registry dates
- Enumerated
- 2006-01-25
- Last updated
- 2014-10-16
Frequently asked questions
- What is Leonard Oneill's NPI number?
- Leonard Oneill's National Provider Identifier (NPI) is 1215907787, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Oneill's specialty?
- Leonard Oneill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Oneill located?
- Leonard Oneill's practice location on file with NPPES is 535 S Burdick St, Kalamazoo, MI 49007-5294.
- What is Leonard Oneill's phone number?
- The practice phone number listed in the NPPES registry for Leonard Oneill is (269) 341-8822.
- Is Leonard Oneill's NPI active?
- Yes — Leonard Oneill's NPI (1215907787) is active in the NPPES registry as of the last update on 2014-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.