Martin I Granoff MD PC
NPI 1104936061 · Obstetrics & Gynecology Physician · East Northport, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martin I Granoff MD PC is a Obstetrics & Gynecology Physician organization in East Northport, NY (NPI 1104936061).
Provider details
- NPI number
- 1104936061
- Entity type
- Organization
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Martin Granoff, Physician(631) 369-3800
- License
- 211787 (NY)
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
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
- 2006-08-30
- Last updated
- 2007-12-07
Frequently asked questions
- What is Martin I Granoff MD PC's NPI number?
- Martin I Granoff MD PC's National Provider Identifier (NPI) is 1104936061, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Martin I Granoff MD PC?
- Martin I Granoff MD PC is classified in the NPPES registry as Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Martin I Granoff MD PC located?
- Martin I Granoff MD PC's practice location on file with NPPES is 554 Larkfield Road, East Northport, NY 11731.
- What is Martin I Granoff MD PC's phone number?
- The practice phone number listed in the NPPES registry for Martin I Granoff MD PC is (631) 369-3800.
- Does Martin I Granoff MD PC accept Medicare?
- Martin I Granoff MD PC 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 Martin I Granoff MD PC?
- The authorized official listed on Martin I Granoff MD PC's NPPES record is Martin Granoff, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Martin I Granoff MD PC's NPI active?
- Yes — Martin I Granoff MD PC's NPI (1104936061) is active in the NPPES registry as of the last update on 2007-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.