Graham Howerzyl, DDS
NPI 1659217859 · Student in an Organized Health Care Education/Training Program · Sioux Center, IA
Graham Howerzyl, DDS is a Student in an Organized Health Care Education/Training Program provider in Sioux Center, IA (NPI 1659217859).
Provider details
- NPI number
- 1659217859
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
- 2026-04-28
- Last updated
- 2026-04-28
- Certified
- 2026-04-27
Frequently asked questions
- What is Graham Howerzyl's NPI number?
- Graham Howerzyl's National Provider Identifier (NPI) is 1659217859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Graham Howerzyl's specialty?
- Graham Howerzyl is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Graham Howerzyl located?
- Graham Howerzyl's practice location on file with NPPES is 159 S Main Ave, Sioux Center, IA 51250-1535.
- What is Graham Howerzyl's phone number?
- The practice phone number listed in the NPPES registry for Graham Howerzyl is (712) 722-2618.
- Is Graham Howerzyl's NPI active?
- Yes — Graham Howerzyl's NPI (1659217859) is active in the NPPES registry as of the last update on 2026-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.