OrganizationActive
Mark S. Feder, O.D.
NPI 1487838082 · Optometrist · Norwalk, CT
Mark S. Feder, O.D. is a Optometrist organization in Norwalk, CT (NPI 1487838082).
Provider details
- NPI number
- 1487838082
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Mark Feder, Owner(203) 853-1010
- License
- 1047 (CT)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
5 Eversley Ave
Suite 104
Norwalk, CT 06851-5821
Phone: (203) 853-1010
Fax: (203) 866-0767
Street-level locationGet directions
Mailing address
5 Eversley Ave
Norwalk, CT 06851-5821
Registry dates
- Enumerated
- 2007-12-19
- Last updated
- 2008-06-16
Frequently asked questions
- What is Mark S. Feder, O.D.'s NPI number?
- Mark S. Feder, O.D.'s National Provider Identifier (NPI) is 1487838082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark S. Feder, O.D.?
- Mark S. Feder, O.D. is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Mark S. Feder, O.D. located?
- Mark S. Feder, O.D.'s practice location on file with NPPES is 5 Eversley Ave, Norwalk, CT 06851-5821.
- What is Mark S. Feder, O.D.'s phone number?
- The practice phone number listed in the NPPES registry for Mark S. Feder, O.D. is (203) 853-1010.
- Who is the authorized official for Mark S. Feder, O.D.?
- The authorized official listed on Mark S. Feder, O.D.'s NPPES record is Mark Feder, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark S. Feder, O.D.'s NPI active?
- Yes — Mark S. Feder, O.D.'s NPI (1487838082) is active in the NPPES registry as of the last update on 2008-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.