Mary Duval
NPI 1699898189 · Hearing Instrument Specialist · Davenport, IA
Mary Duval is a Hearing Instrument Specialist provider in Davenport, IA (NPI 1699898189).
Provider details
- NPI number
- 1699898189
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 466 (IA)
Specialties & taxonomies
Speech, Language and Hearing Service 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
- 2007-04-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Duval's NPI number?
- Mary Duval's National Provider Identifier (NPI) is 1699898189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Duval's specialty?
- Mary Duval is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is Mary Duval located?
- Mary Duval's practice location on file with NPPES is 1220 E 37th St, Davenport, IA 52807-1901.
- What is Mary Duval's phone number?
- The practice phone number listed in the NPPES registry for Mary Duval is (563) 386-2986.
- Is Mary Duval's NPI active?
- Yes — Mary Duval's NPI (1699898189) 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.