IndividualActive
Joan Maertens, RD,LD
NPI 1770623472 · Registered Dietitian · Mason City, IA
Joan Maertens, RD,LD is a Registered Dietitian provider in Mason City, IA (NPI 1770623472).
Provider details
- NPI number
- 1770623472
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD,LD
- Sex
- Female
- Sole proprietor
- No
- License
- 30500418 (IA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(90/100 index)
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
910 N Eisenhower Ave
Suite Mod
Mason City, IA 50401-1525
Phone: (641) 422-6443
Fax: (641) 422-5274
Street-level locationGet directions
Mailing address
621 S Illinois Ave
Mason City, IA 50401-5489
Registry dates
- Enumerated
- 2007-02-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joan Maertens's NPI number?
- Joan Maertens's National Provider Identifier (NPI) is 1770623472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Maertens's specialty?
- Joan Maertens is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Joan Maertens located?
- Joan Maertens's practice location on file with NPPES is 910 N Eisenhower Ave, Mason City, IA 50401-1525.
- What is Joan Maertens's phone number?
- The practice phone number listed in the NPPES registry for Joan Maertens is (641) 422-6443.
- Is Joan Maertens's NPI active?
- Yes — Joan Maertens's NPI (1770623472) 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.