Anna Niesen, MD
NPI 1184709107 · Gastroenterology Physician · St Louis, MO
Anna Niesen, MD is a Gastroenterology Physician provider in St Louis, MO (NPI 1184709107).
Provider details
- NPI number
- 1184709107
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R8939 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-10-26
- Last updated
- 2025-09-11
Frequently asked questions
- What is Anna Niesen's NPI number?
- Anna Niesen's National Provider Identifier (NPI) is 1184709107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anna Niesen's specialty?
- Anna Niesen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Anna Niesen located?
- Anna Niesen's practice location on file with NPPES is 6400 Clayton Road, St Louis, MO 63117.
- What is Anna Niesen's phone number?
- The practice phone number listed in the NPPES registry for Anna Niesen is (314) 781-8405.
- Is Anna Niesen's NPI active?
- Yes — Anna Niesen's NPI (1184709107) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.