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William Maiorino, MD
NPI 1740392174 · Gynecology Physician · West Islip, NY
William Maiorino, MD is a Gynecology Physician provider in West Islip, NY (NPI 1740392174).
Provider details
- NPI number
- 1740392174
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0830691 (NY)
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
320 Montauk Highway
South Bay Obgyn PC
West Islip, NY 11795-4401
Phone: (631) 587-2500
Fax: (631) 587-0292
Street-level locationGet directions
Mailing address
45 Research Way
East Setauket, NY 11733-6401
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2014-09-29
Frequently asked questions
- What is William Maiorino's NPI number?
- William Maiorino's National Provider Identifier (NPI) is 1740392174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Maiorino's specialty?
- William Maiorino is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William Maiorino located?
- William Maiorino's practice location on file with NPPES is 320 Montauk Highway, West Islip, NY 11795-4401.
- What is William Maiorino's phone number?
- The practice phone number listed in the NPPES registry for William Maiorino is (631) 587-2500.
- Is William Maiorino's NPI active?
- Yes — William Maiorino's NPI (1740392174) is active in the NPPES registry as of the last update on 2014-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.