Long Island Gastroenterology and Liver Disease P.C.
NPI 1194025973 · Internal Medicine Physician · Smithtown, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Long Island Gastroenterology and Liver Disease P.C. is a Internal Medicine Physician organization in Smithtown, NY (NPI 1194025973).
Provider details
- NPI number
- 1194025973
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Zvi Alpern, President(631) 265-0062
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
15 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
- 2010-10-27
- Last updated
- 2010-11-23
Frequently asked questions
- What is Long Island Gastroenterology and Liver Disease P.C.'s NPI number?
- Long Island Gastroenterology and Liver Disease P.C.'s National Provider Identifier (NPI) is 1194025973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Long Island Gastroenterology and Liver Disease P.C.?
- Long Island Gastroenterology and Liver Disease P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Long Island Gastroenterology and Liver Disease P.C. located?
- Long Island Gastroenterology and Liver Disease P.C.'s practice location on file with NPPES is 48 Route 25a Ste 307, Smithtown, NY 11787-1454.
- What is Long Island Gastroenterology and Liver Disease P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Long Island Gastroenterology and Liver Disease P.C. is (631) 265-0062.
- Does Long Island Gastroenterology and Liver Disease P.C. accept Medicare?
- Long Island Gastroenterology and Liver Disease P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Long Island Gastroenterology and Liver Disease P.C.?
- The authorized official listed on Long Island Gastroenterology and Liver Disease P.C.'s NPPES record is Zvi Alpern, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Long Island Gastroenterology and Liver Disease P.C.'s NPI active?
- Yes — Long Island Gastroenterology and Liver Disease P.C.'s NPI (1194025973) is active in the NPPES registry as of the last update on 2010-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.