Frederic Mendelsohn, MD
NPI 1336247691 · Neurology Physician · Ronkonkoma, NY
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederic Mendelsohn, MD is a Neurology Physician provider in Ronkonkoma, NY (NPI 1336247691).
Provider details
- NPI number
- 1336247691
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 112676 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2010-07-21
Frequently asked questions
- What is Frederic Mendelsohn's NPI number?
- Frederic Mendelsohn's National Provider Identifier (NPI) is 1336247691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederic Mendelsohn's specialty?
- Frederic Mendelsohn is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Frederic Mendelsohn located?
- Frederic Mendelsohn's practice location on file with NPPES is 650 Hawkins Ave, Ronkonkoma, NY 11779-2366.
- What is Frederic Mendelsohn's phone number?
- The practice phone number listed in the NPPES registry for Frederic Mendelsohn is (631) 737-0055.
- Does Frederic Mendelsohn accept Medicare?
- Frederic Mendelsohn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederic Mendelsohn's NPI active?
- Yes — Frederic Mendelsohn's NPI (1336247691) is active in the NPPES registry as of the last update on 2010-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.