William Ryan, CRNA
NPI 1720100308 · Certified Registered Nurse Anesthetist · Oskaloosa, IA
William Ryan, CRNA is a Certified Registered Nurse Anesthetist provider in Oskaloosa, IA (NPI 1720100308).
Provider details
- NPI number
- 1720100308
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- Yes
- License
- D-064310 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
- 2007-04-04
- Last updated
- 2023-03-07
Frequently asked questions
- What is William Ryan's NPI number?
- William Ryan's National Provider Identifier (NPI) is 1720100308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Ryan's specialty?
- William Ryan is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Ryan located?
- William Ryan's practice location on file with NPPES is 1225 C Ave E, Oskaloosa, IA 52577-4246.
- What is William Ryan's phone number?
- The practice phone number listed in the NPPES registry for William Ryan is (641) 672-3338.
- Is William Ryan's NPI active?
- Yes — William Ryan's NPI (1720100308) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.