James Landefeld, MD
NPI 1538954508 · Internal Medicine Physician · Shorewood Hills, WI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Landefeld, MD is a Internal Medicine Physician provider in Shorewood Hills, WI (NPI 1538954508).
Provider details
- NPI number
- 1538954508
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 101861-851 (WI)
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
1 yr 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
- 2025-04-10
- Last updated
- 2025-06-29
- Certified
- 2025-06-29
Frequently asked questions
- What is James Landefeld's NPI number?
- James Landefeld's National Provider Identifier (NPI) is 1538954508, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Landefeld's specialty?
- James Landefeld is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Landefeld located?
- James Landefeld's practice location on file with NPPES is 1685 Highland Avenue, Shorewood Hills, WI 53705-2281.
- What is James Landefeld's phone number?
- The practice phone number listed in the NPPES registry for James Landefeld is (609) 263-1300.
- Does James Landefeld accept Medicare?
- James Landefeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Landefeld's NPI active?
- Yes — James Landefeld's NPI (1538954508) is active in the NPPES registry as of the last update on 2025-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.