David Blum, OD
NPI 1962930487 · Optometrist · Norwalk, CT
David Blum, OD is a Optometrist provider in Norwalk, CT (NPI 1962930487).
Provider details
- NPI number
- 1962930487
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Eye and Vision Services Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$165 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 100 Greyrock PlStamford, CT 06901-3118Phone: (203) 359-9600
Registry dates
- Enumerated
- 2017-05-28
- Last updated
- 2019-09-12
Frequently asked questions
- What is David Blum's NPI number?
- David Blum's National Provider Identifier (NPI) is 1962930487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Blum's specialty?
- David Blum is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is David Blum located?
- David Blum's practice location on file with NPPES is 100 N Water St, Norwalk, CT 06854-5206.
- What is David Blum's phone number?
- The practice phone number listed in the NPPES registry for David Blum is (914) 584-3150.
- Is David Blum's NPI active?
- Yes — David Blum's NPI (1962930487) is active in the NPPES registry as of the last update on 2019-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.