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Lynne Portnoy, MD
NPI 1467554477 · Internal Medicine Physician · Syosset, NY
Lynne Portnoy, MD is a Internal Medicine Physician provider in Syosset, NY (NPI 1467554477).
Provider details
- NPI number
- 1467554477
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 044030 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
6500 Jericho Tpke
Syosset, NY 11791-4489
Phone: (516) 465-0395
Approximate (ZIP-level) locationGet directions
Mailing address
35 Santa Barbara Dr
Plainview, NY 11803-5815
Registry dates
- Enumerated
- 2006-09-01
- Last updated
- 2014-06-16
Frequently asked questions
- What is Lynne Portnoy's NPI number?
- Lynne Portnoy's National Provider Identifier (NPI) is 1467554477, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynne Portnoy's specialty?
- Lynne Portnoy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lynne Portnoy located?
- Lynne Portnoy's practice location on file with NPPES is 6500 Jericho Tpke, Syosset, NY 11791-4489.
- What is Lynne Portnoy's phone number?
- The practice phone number listed in the NPPES registry for Lynne Portnoy is (516) 465-0395.
- Is Lynne Portnoy's NPI active?
- Yes — Lynne Portnoy's NPI (1467554477) is active in the NPPES registry as of the last update on 2014-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.