OrganizationActive
John D. Kiernan OD
NPI 1912176256 · Eyewear Supplier · Sioux City, IA
John D. Kiernan OD is a Eyewear Supplier organization in Sioux City, IA (NPI 1912176256).
Provider details
- NPI number
- 1912176256
- Entity type
- Organization
- Primary specialty
- Eyewear SupplierSuppliers
- Organization subpart
- No
- Authorized official
- John Kiernan, Owner(712) 252-4406
- License
- 1687 (IA)
Specialties & taxonomies
Suppliers
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
1214 Pierce St
Sioux City, IA 51105-1417
Phone: (712) 252-4406
Fax: (712) 252-5296
Street-level locationGet directions
Mailing address
1214 Pierce St
Sioux City, IA 51105-1417
Registry dates
- Enumerated
- 2008-02-20
- Last updated
- 2008-04-09
Frequently asked questions
- What is John D. Kiernan OD's NPI number?
- John D. Kiernan OD's National Provider Identifier (NPI) is 1912176256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John D. Kiernan OD?
- John D. Kiernan OD is classified in the NPPES registry as Eyewear Supplier (Suppliers).
- Where is John D. Kiernan OD located?
- John D. Kiernan OD's practice location on file with NPPES is 1214 Pierce St, Sioux City, IA 51105-1417.
- What is John D. Kiernan OD's phone number?
- The practice phone number listed in the NPPES registry for John D. Kiernan OD is (712) 252-4406.
- Who is the authorized official for John D. Kiernan OD?
- The authorized official listed on John D. Kiernan OD's NPPES record is John Kiernan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John D. Kiernan OD's NPI active?
- Yes — John D. Kiernan OD's NPI (1912176256) is active in the NPPES registry as of the last update on 2008-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.