IndividualActive
Nan Olson, RD CD
NPI 1255392155 · Registered Dietitian · Madison, WI
Nan Olson, RD CD is a Registered Dietitian provider in Madison, WI (NPI 1255392155).
Provider details
- NPI number
- 1255392155
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD CD
- Sex
- Female
- Sole proprietor
- No
- License
- 858 (WI)
Specialties & taxonomies
Dietary & Nutritional Service Providers
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
20 S Park St
Madison, WI 53715
Phone: (608) 287-2780
Fax: (608) 287-2777
Street-level locationGet directions
Mailing address
7974 Uw Health Ct
Middleton, WI 53562-5531
Registry dates
- Enumerated
- 2006-03-30
- Last updated
- 2009-04-29
Frequently asked questions
- What is Nan Olson's NPI number?
- Nan Olson's National Provider Identifier (NPI) is 1255392155, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nan Olson's specialty?
- Nan Olson is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Nan Olson located?
- Nan Olson's practice location on file with NPPES is 20 S Park St, Madison, WI 53715.
- What is Nan Olson's phone number?
- The practice phone number listed in the NPPES registry for Nan Olson is (608) 287-2780.
- Is Nan Olson's NPI active?
- Yes — Nan Olson's NPI (1255392155) is active in the NPPES registry as of the last update on 2009-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.