Alexander S Elfenbein Physician PC
NPI 1801968912 · Cardiovascular Disease Physician · Valley Stream, NY
Alexander S Elfenbein Physician PC is a Cardiovascular Disease Physician organization in Valley Stream, NY (NPI 1801968912).
Provider details
- NPI number
- 1801968912
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Alexander Elfenbein, Owner(516) 568-2121
- License
- 1637251 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-11-14
- Last updated
- 2025-09-11
Frequently asked questions
- What is Alexander S Elfenbein Physician PC's NPI number?
- Alexander S Elfenbein Physician PC's National Provider Identifier (NPI) is 1801968912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Alexander S Elfenbein Physician PC?
- Alexander S Elfenbein Physician PC is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander S Elfenbein Physician PC located?
- Alexander S Elfenbein Physician PC's practice location on file with NPPES is 40 East Merrick Road, Valley Stream, NY 11580-5947.
- What is Alexander S Elfenbein Physician PC's phone number?
- The practice phone number listed in the NPPES registry for Alexander S Elfenbein Physician PC is (516) 568-2121.
- Who is the authorized official for Alexander S Elfenbein Physician PC?
- The authorized official listed on Alexander S Elfenbein Physician PC's NPPES record is Alexander Elfenbein, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Alexander S Elfenbein Physician PC's NPI active?
- Yes — Alexander S Elfenbein Physician PC's NPI (1801968912) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.