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Allan Diefendorf, PH.D.
NPI 1447484464 · Audiologist · Indianapolis, IN
Allan Diefendorf, PH.D. is a Audiologist provider in Indianapolis, IN (NPI 1447484464).
Provider details
- NPI number
- 1447484464
- Entity type
- Individual
- Primary specialty
- AudiologistSpeech, Language and Hearing Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 23001934 (IN)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
702 Barnhill Dr
Suite 0860
Indianapolis, IN 46202-5128
Phone: (317) 630-8970
Fax: (317) 630-8958
Street-level locationGet directions
Mailing address
250 N Shadeland Ave
Indianapolis, IN 46219-4959
Registry dates
- Enumerated
- 2009-05-05
- Last updated
- 2014-01-29
Frequently asked questions
- What is Allan Diefendorf's NPI number?
- Allan Diefendorf's National Provider Identifier (NPI) is 1447484464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allan Diefendorf's specialty?
- Allan Diefendorf is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).
- Where is Allan Diefendorf located?
- Allan Diefendorf's practice location on file with NPPES is 702 Barnhill Dr, Indianapolis, IN 46202-5128.
- What is Allan Diefendorf's phone number?
- The practice phone number listed in the NPPES registry for Allan Diefendorf is (317) 630-8970.
- Is Allan Diefendorf's NPI active?
- Yes — Allan Diefendorf's NPI (1447484464) is active in the NPPES registry as of the last update on 2014-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.