Ann Pierzynski, R.D., L.D.
NPI 1548354376 · Registered Dietitian · Saint Louis, MO
Ann Pierzynski, R.D., L.D. is a Registered Dietitian provider in Saint Louis, MO (NPI 1548354376).
Provider details
- NPI number
- 1548354376
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- R.D., L.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 2001026078 (MO)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ann Pierzynski's NPI number?
- Ann Pierzynski's National Provider Identifier (NPI) is 1548354376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Pierzynski's specialty?
- Ann Pierzynski is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Ann Pierzynski located?
- Ann Pierzynski's practice location on file with NPPES is 10010 Kennerly Rd, Saint Louis, MO 63128-2106.
- What is Ann Pierzynski's phone number?
- The practice phone number listed in the NPPES registry for Ann Pierzynski is (314) 525-1266.
- Is Ann Pierzynski's NPI active?
- Yes — Ann Pierzynski's NPI (1548354376) 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.