Alexander Sierk, DDS,MS
NPI 1912111717 · Orthodontics and Dentofacial Orthopedics Dentistry · Bettendorf, IA
Alexander Sierk, DDS,MS is a Orthodontics and Dentofacial Orthopedics Dentistry provider in Bettendorf, IA (NPI 1912111717).
Provider details
- NPI number
- 1912111717
- Entity type
- Individual
- Primary specialty
- Orthodontics and Dentofacial Orthopedics DentistryDental Providers
- Credential
- DDS,MS
- Sex
- Male
- Sole proprietor
- No
- License
- 08335 (IA)
Specialties & taxonomies
Dental Providers
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
- 2007-05-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Alexander Sierk's NPI number?
- Alexander Sierk's National Provider Identifier (NPI) is 1912111717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Sierk's specialty?
- Alexander Sierk is listed in the NPPES registry with a primary specialty of Orthodontics and Dentofacial Orthopedics Dentistry (Dental Providers).
- Where is Alexander Sierk located?
- Alexander Sierk's practice location on file with NPPES is 1918 Middle Rd, Bettendorf, IA 52722-3292.
- What is Alexander Sierk's phone number?
- The practice phone number listed in the NPPES registry for Alexander Sierk is (563) 359-8211.
- Is Alexander Sierk's NPI active?
- Yes — Alexander Sierk's NPI (1912111717) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.