IndividualActive
Louis Alt, M.D.
NPI 1902855778 · Otolaryngology Physician · Dubuque, IA
Louis Alt, M.D. is a Otolaryngology Physician provider in Dubuque, IA (NPI 1902855778).
Provider details
- NPI number
- 1902855778
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 19813 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
1000 Langworthy St
Dubuque, IA 52001-7313
Phone: (563) 584-3475
Fax: (563) 584-3395
Street-level locationGet directions
Mailing address
1500 Associates Dr
Dubuque, IA 52002-2201
Registry dates
- Enumerated
- 2006-05-09
- Last updated
- 2009-11-25
Frequently asked questions
- What is Louis Alt's NPI number?
- Louis Alt's National Provider Identifier (NPI) is 1902855778, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Alt's specialty?
- Louis Alt is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Alt located?
- Louis Alt's practice location on file with NPPES is 1000 Langworthy St, Dubuque, IA 52001-7313.
- What is Louis Alt's phone number?
- The practice phone number listed in the NPPES registry for Louis Alt is (563) 584-3475.
- Is Louis Alt's NPI active?
- Yes — Louis Alt's NPI (1902855778) is active in the NPPES registry as of the last update on 2009-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.