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Jan Pietrzak, MPH, RD, LDN
NPI 1346322146 · Registered Dietitian · Chicago, IL
Jan Pietrzak, MPH, RD, LDN is a Registered Dietitian provider in Chicago, IL (NPI 1346322146).
Provider details
- NPI number
- 1346322146
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MPH, RD, LDN
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(84/100 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
83% 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
645 S Central Ave
Chicago, IL 60644-5059
Phone: (773) 854-5852
Street-level locationGet directions
Mailing address
12031 S 72nd Ct
Palos Heights, IL 60463-1118
Registry dates
- Enumerated
- 2006-10-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jan Pietrzak's NPI number?
- Jan Pietrzak's National Provider Identifier (NPI) is 1346322146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Pietrzak's specialty?
- Jan Pietrzak is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Jan Pietrzak located?
- Jan Pietrzak's practice location on file with NPPES is 645 S Central Ave, Chicago, IL 60644-5059.
- What is Jan Pietrzak's phone number?
- The practice phone number listed in the NPPES registry for Jan Pietrzak is (773) 854-5852.
- Is Jan Pietrzak's NPI active?
- Yes — Jan Pietrzak's NPI (1346322146) 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.