South Nassau Medical Group, PC
NPI 1801153051 · Family Medicine Physician · Lynbrook, NY
South Nassau Medical Group, PC is a Family Medicine Physician organization in Lynbrook, NY (NPI 1801153051).
Provider details
- NPI number
- 1801153051
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Linda Efferen, President(516) 632-3965
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
14 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
- 2012-04-12
- Last updated
- 2012-04-12
Frequently asked questions
- What is South Nassau Medical Group, PC's NPI number?
- South Nassau Medical Group, PC's National Provider Identifier (NPI) is 1801153051, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is South Nassau Medical Group, PC?
- South Nassau Medical Group, PC is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is South Nassau Medical Group, PC located?
- South Nassau Medical Group, PC's practice location on file with NPPES is 185 Merrick Rd, Lynbrook, NY 11563-2700.
- What is South Nassau Medical Group, PC's phone number?
- The practice phone number listed in the NPPES registry for South Nassau Medical Group, PC is (516) 887-0077.
- Who is the authorized official for South Nassau Medical Group, PC?
- The authorized official listed on South Nassau Medical Group, PC's NPPES record is Linda Efferen, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is South Nassau Medical Group, PC's NPI active?
- Yes — South Nassau Medical Group, PC's NPI (1801153051) is active in the NPPES registry as of the last update on 2012-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.