Fred Marcus, D.O.
NPI 1710123963 · Addiction Medicine (Family Medicine) Physician · Syosset, NY
Fred Marcus, D.O. is a Addiction Medicine (Family Medicine) Physician provider in Syosset, NY (NPI 1710123963).
Provider details
- NPI number
- 1710123963
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 132700 (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
17 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
- 2008-12-17
- Last updated
- 2008-12-17
Frequently asked questions
- What is Fred Marcus's NPI number?
- Fred Marcus's National Provider Identifier (NPI) is 1710123963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fred Marcus's specialty?
- Fred Marcus is listed in the NPPES registry with a primary specialty of Addiction Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Fred Marcus located?
- Fred Marcus's practice location on file with NPPES is 770 Jericho Tpke, Syosset, NY 11791-4516.
- What is Fred Marcus's phone number?
- The practice phone number listed in the NPPES registry for Fred Marcus is (516) 496-2049.
- Is Fred Marcus's NPI active?
- Yes — Fred Marcus's NPI (1710123963) is active in the NPPES registry as of the last update on 2008-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.