Louis Heisler, MD
NPI 1659368314 · Internal Medicine Physician · Lake Success, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Heisler, MD is a Internal Medicine Physician provider in Lake Success, NY (NPI 1659368314).
Provider details
- NPI number
- 1659368314
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- GO120352 (NY)
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
- 2005-09-28
- Last updated
- 2009-12-18
Frequently asked questions
- What is Louis Heisler's NPI number?
- Louis Heisler's National Provider Identifier (NPI) is 1659368314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Heisler's specialty?
- Louis Heisler is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Heisler located?
- Louis Heisler's practice location on file with NPPES is 910 Lakeville Rd, Lake Success, NY 11040-3008.
- What is Louis Heisler's phone number?
- The practice phone number listed in the NPPES registry for Louis Heisler is (516) 488-5050.
- Does Louis Heisler accept Medicare?
- Louis Heisler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Heisler's NPI active?
- Yes — Louis Heisler's NPI (1659368314) is active in the NPPES registry as of the last update on 2009-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.