IndividualActive
Mary Siemek, RD, CDE
NPI 1275663882 · Registered Dietitian · Neenah, WI
Mary Siemek, RD, CDE is a Registered Dietitian provider in Neenah, WI (NPI 1275663882).
Provider details
- NPI number
- 1275663882
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD, CDE
- Sex
- Female
- Sole proprietor
- No
- License
- 198-029 (WI)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(89/100 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
130 2nd St
Neenah, WI 54956-2883
Phone: (920) 729-2046
Approximate (ZIP-level) locationGet directions
Mailing address
1408 W Homestead Dr
Appleton, WI 54914-2030
Registry dates
- Enumerated
- 2007-03-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Siemek's NPI number?
- Mary Siemek's National Provider Identifier (NPI) is 1275663882, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Siemek's specialty?
- Mary Siemek is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Mary Siemek located?
- Mary Siemek's practice location on file with NPPES is 130 2nd St, Neenah, WI 54956-2883.
- What is Mary Siemek's phone number?
- The practice phone number listed in the NPPES registry for Mary Siemek is (920) 729-2046.
- Is Mary Siemek's NPI active?
- Yes — Mary Siemek's NPI (1275663882) 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.